2021 off-road motorcycle models revealed
With taglines such as “Be Next,” “The Bike That Builds Champions” and “Get the Off-Road Edge,” there is plenty of reason for your dealership’s staff to be aware of the new 2021 off-road motorcycle lineup from Kawasaki.
Here’s a closer look at the lineup from the corporate office in Foothill Ranch, California.
ALL-NEW 2021 KX250 Motorcycle
Be Next
The KX250 motorcycle is instilled with a high level of technology and KX DNA so that you can be the next moto prodigy. Its power, handling and adjustability personalize the feel of the motorcycle and provide higher confidence for motocross riding at all levels.
The powerful engine of the KX250 features upgrades to both the top and bottom end for increased power, improved brakes offer more control when harnessing the power of the stronger engine, and an updated KX450-style frame and fine-tuned suspension settings to create the ultimate performance package.
NEW 2021 KX450 Motorcycle
The Bike That Builds Champions
The KX450 is built with race-winning components to help Kawasaki riders get to the top step of the podium. For 2021 the KX450 receives engine updates for increased performance, a new coned disk-spring hydraulic clutch, and a new 1-1/8” Renthal Fatbar handlebar.
From the showroom to the racetrack, the performance of Kawasaki’s KX family of motorcycles is proof of its engineering pedigree. It truly is The Bike That Builds Champions.
ALL-NEW 2021 KX450XC and KX250XC Motorcycles
Get the Off-Road Edge
The championship-proven technology of KX race machines has now been purposely tuned for off-road competition. The KX250XC and KX450XC share many winning traits with their motocross counterparts including the engine, frame, chassis, and styling, paired with unique cross-country tuning and settings such as suspension settings, gearing, off-road 21”/18” wheel combination, Dunlop Geomax AT81 tires, brake components, skid plate, and kickstand. The softer suspension settings and shorter gearing ratio help to create the optimal handling off-road race package for the KX XC lineup.
KX 250XC and 450XC
The championship-proven technology of KX race machines has now been purposely tuned for off-road competition. Kawasaki is proud to announce all-new race ready off-road KX XC models with the all-new 2021 KX250XC and KX450XC models.
As a brand that has a rich history in off-road racing with more than 25 championships in WORCS, National Hare & Hound, GNCC, and Endurocross over the past 20 years, there’s no denying the all-new KX XC models are powered by technology that hails from a legacy of champions.
The KX250XC and KX450XC share many winning traits with their motocross counterparts including the engine, frame, chassis, and styling, paired with unique cross-country tuning and settings such as suspension settings, gearing, off-road 21”/18” wheel combination, Dunlop Geomax AT81 tires, brake components, skid plate, and kickstand. The softer suspension settings and shorter gearing ratio help to create the optimal handling off-road race package for the KX XC lineup.
Developed to dominate off-road racecourses in both the woods and the desert, the KX XC lineup offers riders an arsenal of factory-style features along with the dominant engine and chassis performance right off the showroom floor.
Highlights of the 2021 KX XC Lineup
• ALL-NEW Off-road optimized engine and suspension settings
• ALL-NEW 21” front wheel and 18” rear wheel
• ALL-NEW Dunlop GEOMAX AT81 tires
• ALL-NEW Brake components
• ALL-NEW Skid plate
• ALL-NEW Kickstand
KAWASAKI KX450XC
The all-new 2021 KX450XC has been designed as the flagship model of the KX XC lineup. Whether in the woods, desert, or cross-country the KX450XC is a race-ready championship winning machine right off the showroom floor, and shares numerous winning traits of its motocross counterpart, the KX450.
A cross-country race machine tuned for more experienced riders, the 449cc liquid-cooled, four-stroke engine, slim aluminum perimeter frame, Showa A-KIT technology suspension, hydraulic clutch and electric start are the ultimate combination of a championship winning package.
The KX450XC is built with race-winning components to help Kawasaki riders get to the top step of the podium. From the showroom to the racetrack, the performance of Kawasaki’s KX family of motorcycles is proof of its engineering pedigree.
ENGINE
The four-stroke, single cylinder, DOHC, water-cooled 449cc lightweight engine package utilizes input derived directly from the factory race team, with optimized engine mapping and settings for off-road racing. The potent KX450XC engine features an electric start, which is activated by the push of a button and powered by a compact Li-ion battery.
Kawasaki brought top-level road racing technology to the KX450XC valve train, using designs from Kawasaki World Superbike engineers. It uses a finger-follower valve actuation, enabling larger-diameter valves and more aggressive cam profiles.
The intake and exhaust valves are formed from lightwight titanium, while a bridged-box piston uses the same design as the Monster Energy Kawasaki race team’s factory motorcycles. For increased performance on the 2021 KX450XC engine, the piston also features a dry film lubricant coating on the piston skirt to reduce friction.
A close-ratio five speed transmission features lightweight gears and shafts to keep weight down, yet retains strength, while contributing to the motorcycle’s winning performance. The KX450XC has shorter gearing than its counterpart, the KX450, with a final gear ratio of 51/13. The transmission is paired with a coned disk-spring hydraulic clutch that is designed to provide a consistent feeling through minimal change in play as the clutch heats up during heavy use. The coned disc-spring contributes to a light clutch actuation and a wide clutch engagement range, which facilitates increased control.
CHASSIS
An industry-leading slim aluminum perimeter frame provides pecise cornering through excellent front-end feel and the ultimate agility when riding at high speeds. The frame’s lightweight construction is composed of forged, extruded and cast parts, while the engine is used as a stressed member and adds to the frames rigidity balance. A lightweight alloy swingarm is constructed of a cast front section and twin tapered hydro-formed spars in a raw aluminum finish, complementing the frame’s raw look. Engineers carefully placed the dimension of the swingarm pivot, output sprocket and rear axle locations, helping to focus on lower center of gravity and balanced handling.
SUSPENSION & BRAKES
The race-ready suspension found on the KX450XC features front and rear spring rates and damping settings that have been optimized for technical off-road and cross-country racing environments. High-performance Showa 49 mm coil spring front forks with A-KIT technology can be found up front, featuring large diameter inner tubes that are the same size as those found on Kawasaki’s factory racing team’s machines.
The forks enable the use of large damping pistons for smooth action and firm damping. A super-hard titanium coating on the outer surface of the inner/lower fork tubes helps prevent wear and abrasion. The increased surface hardness of the dark navy-blue coating also helps to prevent scratches and damage to the tubes. Kashima Coating on the fork tubes also helps prevent wear and abrasion while optimizing performance.
On the rear, a new Uni-Trak linkage system is designed to work in conjunction with the Showa shock, aluminum frame and swingarm. The linkage, which is mounted below the swingarm, allows for a longer rear suspension stroke and more precise rear suspension tuning.
The Showa Compact Design rear shock boasts A-KIT technology with large diameter compression adjusters, improving on the high frequency movements found when racing cross-country. The Showa shock features a self-lubricating alumite coating on the shock body to help prevent wear and abrasion, while also reducing friction for smoother suspension action.
An oversized 270 mm, petal-shaped front brake rotor from the renowned manufacturer, Braking, is fitted to perfectly complement the powerful engine of the KX450XC. Optimized for cross-country riding and increased control, the rear is equipped with a 240 mm petal-shaped Braking rotor that matches the large front disc. Both are gripped by Nissin master cylinder and caliper setups with XC-specific pads.
XC SPECIFIC COMPONENTS
The KX450XC is equipped with many specific cross-country components, such as the 21” front and 18” rear wheel combination paired with Dunlop GEOMAX AT81 tires, which were selected for optimal handling in off-road racing conditions. Other cross-country specific components include the durable plastic skid plate and side stand.
ERGONOMICS & ERGO-FIT ADJUSTABLE COMPONENTS
Kawasaki continues its umatched commitment towards providing riders with class-leading comfort thanks to its ERGO-FIT adjustable handlebar mounting system and footpegs to fit a variety of riders and riding styles. The KX450XC is equipped with factory-style 1-1/8” aluminum Renthal Fatbar handlebar, as standard equipment. The handlebars feature four-way adjustable mounts. The multi-positition handlebars offer two mounting holes with 35 mm of adjustability, and the 180-degree offset clamps boast four individual settings to suit different size riders.
The footpegs feature dual-position mounting points, with a lower position that reduces the standard setting by an additional 5 mm. The lower position effectively lowers the center of gravity when standing, and reduces knee angle when tallers riders are seated.
BODYWORK & SEAT
Complementing the championship proven technology, the 2021 KX450XC features aggressive styling along with in-mold graphics on the radiator shrouds that result in an ultra-smooth surface and a factory-racer look needed to finish at the top of its class. The sleek bodywork has been molded to match the V-mounted radiators and narrow chassis design.
Each piece of the bodywork has been designed to help facilitate the rider’s movement with long, smooth surfaces. The rims are coated with tough, durable black alumite treatment. Adjusters on the fork and shock both feature a high-quality green alumite finish. A gold finish on the oil cap and the both plugs on the engine cover further contribute to KX factory-racer looks and styling.
Kawasaki Team Green Racer Rewards
Kawasaki Team Green Racer Rewards return for the 2021 racing season with more than seven million dollars in contingency available for eligible KX riders. With unmatched trackside support at over 40 events across the nation each year, Kawasaki’s Team Green program continues to raise the bar in support of amateur and professional racing by offering its payouts of over seven million dollars up for grabs, with an increased emphasis on payouts for off-road series, such as GNCC, National Enduro, JDay Off-Road, Hare & Hound and Full Gas Sprint Enduro. The off-road payout alone boasts an impressive $2.2 million there for the taking, making it the highest in the industry.
KAWASAKI KX450XC
Color: Lime Green
MSRP: $9,599
Availability: Summer 2020
KAWASAKI KX250XC
The all-new 2021 KX250XC has been designed for the rising stars in the XC2 250 Pro or Pro 2 Class and provides riders with a race-ready off-road motorcycle. Built from the legendary motocross winning pedigree of the KX250 motorcycle and tuned to best suit off-road race-experienced riders, the 249cc liquid-cooled, four-stroke engine, slim aluminum perimeter frame, top of the line KYB suspension components, hydraulic clutch and electric start are the ultimate combination of a championship winning package.
The KX250XC is built with race-winning components to help Kawasaki riders get to the top step of the podium in all off-road and cross-country racing enviornments. From the showroom to the racetrack, the performance of Kawasaki’s KX family of motorcycles is proof of its engineering pedigree.
ENGINE
The four-stroke, single cylinder, DOHC, water-cooled 249cc lightweight engine package utilizes input derived directly from the factory race team, with optimized engine mapping and settings for off-road racing. The powerful KX250XC engine features an electric start, which is activated by the push of a button and powered by a compact Li-ion battery.
Kawasaki brought top-level road racing technology to the KX250XC valve train, using designs from Kawasaki World Superbike engineers. It uses finger-follower valve actuation, enabling larger-diameter valves and more aggressive cam profiles. The intake and exhaust valves are formed from lightwight titanium, while a bridged-box piston uses the same design as the Monster Energy/Pro Circuit/Kawasaki race team’s motorcycles.
A close-ratio five speed transmission features lightweight gears and shafts to keep weight down, yet retain strength, while contributing to the motorcycle’s winning performance. The KX250XC has shorter gearing than its counterpart, the KX250, with a final gear ratio of 51/13.
The transmission is paired with a coned disk-spring hydraulic clutch that is designed to provide a consistent feeling through minimal change in play as the clutch heats up during heavy use. The coned disc-spring contributes to a light clutch actuation and a wide clutch engagement range, which facilitates increased control.
CHASSIS
The industry-leading slim aluminum perimeter frame is all-new for 2021 and provides precise cornering through excellent front-end feel and the ultimate agility when riding at high speeds. The frame’s lightweight construction is composed of forged, extruded and cast parts, while the engine is used as a stressed member and adds to the frame’s rigidity balance.
A lightweight alloy swingarm is constructed of a cast front section and twin tapered hydro-formed spars in a raw aluminum finish, complementing the frame’s raw look. Engineers carefully placed the dimension of the swingarm pivot, output sprocket and rear axle locations, helping to focus on center of gravity and balanced handling.
SUSPENSION & BRAKES
High-performance KYB 48 mm coil spring front forks can be found up front, featuring large diameter inner tubes that are the same size as those found on Kawasaki’s factory racing team’s machines, but with optimized spring rates and damping settings for off-road riding. The forks enable the use of large damping pistons for smooth action and firm damping. Kashima Coating on the fork tubes helps prevent wear and abrasion while optimizing performance.
In the rear, a new Uni-Trak linkage system is designed to work in conjunction with the KYB shock, aluminum frame and swingarm. The linkage, which is mounted below the swingarm, allows for a longer rear suspension stroke and more precise rear suspension tuning.
The KYB rear shock features dual compression adjustability, allowing high-speed and low-speed damping to be tuned separately. Kashima Coating on the shock helps prevent wear and reduces friction for smoother suspension action.
An oversized 270 mm, petal-shaped front brake rotor from the renowned manufacturer, Braking, is fitted to perfectly complement the powerful engine of the KX250XC. The rear is equipped with a 240 mm petal-shaped Braking rotor that matches the large front disc. Both are gripped by Nissin master cylinder and caliper setups and feature XC-specific pads.
XC SPECIFIC COMPONENTS
The KX250XC is equipped with many specific cross-country components, such as the 21” front and 18” rear wheel combination paired with Dunlop GEOMAX AT81 tires, which were selected for optimal handling in off-road racing conditions. Other cross-country specific components include the durable plastic skid plate and side stand.
ERGONOMICS & ERGO-FIT ADJUSTABLE COMPONENTS
Kawasaki continues its umatched commitment towards providing riders with class-leading comfort thanks to its ERGO-FIT adjustable handlebar mounting system and footpegs to fit a variety of riders and riding styles. The KX250XC is equipped with factory-style 1-1/8” aluminum Renthal Fatbar handlebar, as standard equipment. The handlebars feature four-way adjustable mounts. The multi-positition handlebars offer two mounting holes with 35 mm of adjustability, and the 180-degree offset clamps boast four individual settings to suit different size riders. The footpegs feature dual-position mounting points, with a lower position that reduces the standard setting by an additional 5 mm. The lower position effectively lowers the center of gravity when standing, and reduces knee angle when tallers riders are seated.
BODYWORK & SEAT
Complementing the championship proven technology, the 2021 KX250XC features aggressive styling along with in-mold graphics on the radiator shrouds that result in an ultra-smooth surface and factory-racer look needed to finish at the top of its class. The sleek bodywork has been molded to match the V-mounted radiators and narrow chassis design. Each piece of the bodywork has been designed to help facilitate the rider’s movement with long, smooth surfaces. The rims are coated with a tough, durable black alumite treatment. Adjusters on the fork and shock both feature a high-quality green alumite finish. A gold finish on the oil cap and the both plugs on the engine cover further contribute to KX factory-racer looks and styling.
Kawasaki Team Green Racer Rewards
Kawasaki Team Green Racer Rewards return for the 2021 racing season with more than seven million dollars in contingency available for eligible KX riders. With unmatched trackside support at over 40 events across the nation each year, Kawasaki’s Team Green program continues to raise the bar in support of amateur and professional racing by offering its payouts of over seven million dollars up for grabs, with an increased emphasis on payouts for off-road series, such as GNCC, National Enduro, JDay Off-Road, Hare & Hound and Full Gas Sprint Enduro. The off-road payout alone boasts an impressive $2.2 million there for the taking, making it the highest in the industry.
KAWASAKI KX250XC
Color: Lime Green
MSRP: $8,399
Availability: Summer 2020
2021 KAWASAKI KLX MODEL RANGE
A fan favorite, the Kawasaki KLX family of off-road motorcycles are widely popular for their low maintenance, easy-to-ride character, and incredible capabilities while out on the trails. Completing the rest of the 2021 KLX family line up are five additional models, which consist of four engine configurations and are built to suit a variety of riders.
The KLX300R off-road motorcycle bridges the gap between a weekend play bike and a full race bike. As the flagship of the KLX lineup, the KLX300R combines the best of both engine and chassis performance to create the ultimate lightweight, fun off-road machine. The powerful 292cc fuel-injected, liquid-cooled four-stroke engine features an electric starter and keyless ignition. It has a user-friendly smooth-shifting six-speed transmission and manual clutch.
The KLX300R comes equipped with full-size off-road wheels and tires, using a 21” front and 18” rear, and long travel suspension for optimal ground clearance.
The KLX230 dual-purpose motorcycle is built to take riders to new places. Taking cues from the KX line and Kawasaki’s racing heritage, this street legal, dual-purpose motorcycle has been designed to enable riders to get out of town and enjoy the trails with confidence.
A smooth and reliable powerful, 233cc fuel-injected, air-cooled engine has been paired with an easy-to-use smooth-shifting six-speed transmission and manual clutch, and a compact steel perimeter frame, which were all designed with trail riding in mind.
Full-size wheels, long-travel suspension, and ample ground clearance contribute to the off-road capability of the KLX230 motorcycle. Front and rear disc brakes supported by Kawasaki’s first dual-purpose ABS provide sure stopping power when riding on trails as well as on-road.
The KLX140R F motorcycle is the third variation of the KLX 140 models and is designed to provide a natural terrain experience with memories to last a lifetime. The powerful 144cc, four-stroke, air-cooled, single-cylinder engine features an electric starter and keyless ignition. Its broad and smooth high-revving 144cc engine utilizes a manual clutch and five-speed transmission to offer an efficient and user-friendly feel. The KLX140R F comes equipped with full-size off-road wheels and tires, using a 21” front and 18” rear.
The KLX110R is a great motorcycle for a new rider who is looking to experience off-road for the first time. A high-tensile steel frame, 30mm telescopic fork, and single rear shock provide easy handling and maximum longevity. It also incorporates an automatic centrifugal clutch system that allows easy take off and shifting through the gears, helping the rider maintain focus on the terrain and to make the most of the 112cc single-cylinder, four-stroke engine.
The larger KLX110R L motorcycle has a taller seat height (28.7” compared to 26.8” for the KLX110R), longer suspension travel, an extra 1.9” of ground clearance and a four-speed transmission with a manual clutch. No matter your size or skill level, there is a KLX model motorcycle to allow you to get out and play with Kawasaki.
Model Variations
KAWASAKI KLX300R
Color: Lime Green
MSRP: $5,499
Availability: Now
KAWASAKI KLX230 (ABS Edition)
Color: Lime Green
MSRP: $4,899
Availability: Now
KAWASAKI KLX230 (Non-ABS Edition)
Color: Lime Green
MSRP: $4,599
Availability: Now
KAWASAKI KLX140R F
Color: Lime Green
MSRP: $3,749
Availability: Now
KAWASAKI KLX110R
Color: Lime Green
MSRP: $2,349
Availability: Now
KAWASAKI KLX110R L
Color: Lime Green
MSRP: $2,549
Availability: Now
2021 KAWASAKI KX250 MOTORCYCLE
The Kawasaki KX250 motorcycle has more AMA motocross and supercross championships combined than any other manufacturer in its class and returns for 2021 with a list of enhancements that are designed to continue its winning history by keeping it the best performing bike on track. The 2021 model builds on the engine changes from the previous year to deliver even more power and make it the most powerful KX250 to date.
In addition to its high revving engine, it now features new electric start, new coned disk-spring hydraulic clutch, and a new slim aluminum perimeter frame that improves handling to enable quicker lap times, making the KX250 even more potent on the racetrack. With a championship heritage that boasts 18 AMA professional titles and 189 race wins since 2004, the KX250 is the ideal platform for mid-level to expert riders looking to reach the top step of the podium.
The KX250 motorcycle is instilled with a high level of technology and KX DNA so that you can be the next moto prodigy. Its power, handling and adjustability personalize the feel of the motorcycle and provide higher confidence for motocross riding at all levels. The powerful engine of the KX250 features upgrades to both the top and bottom end for increased power, improved brakes offer more control when harnessing the power of the stronger engine, and an updated KX450-style frame and fine-tuned suspension settings to create the ultimate performance package.
Highlights of the 2021 KX250
• NEW More powerful engine
• NEW Electric start
• NEW Coned disk-spring hydraulic clutch
• NEW Lightweight aluminum perimeter frame
• NEW Fine-tuned race-ready suspension and brake components
• NEW Slim, ergonomic bodywork
ENGINE
• NEW Engine with increased peak power
• NEW Processing for intake and exhaust ports
• NEW Exhaust cam timing
• NEW Stiffer valve springs
• NEW Combustion chamber design and flatter piston crown
• NEW Longer connecting rod
• NEW Lighter crankshaft design
• NEW Revised pressure balance inside the crankcase
• NEW Coned disk-spring hydraulic clutch
• NEW Electric start via the push of a button
• NEW Lightweight, compact Li-ion battery
Despite the 2020 KX250 already benefitting from a significant power increase thanks to its adoption of finger-follower valve actuation, the engine of the 2021 KX250 has received additional changes to raise peak power even further and enable an even higher rev limit, while significantly increasing low-mid range performance.
Tuned to best suit race-experienced riders, the 249cc liquid-cooled, four-stroke engine focuses on more top-end revs thanks to improvements gleaned through Kawasaki’s factory racing efforts.
The 2021 KX250 becomes Kawasaki’s first electric start 250 motocross bike, which is activated by the push of a button located on the handlebar near the right grip, making starting easy and convenient. The ability to restart the engine quickly can mean the difference between keeping your lead or having to fight your way through the pack under intense race situations. A lightweight, compact Li-ion battery helps keep weight down, as does an automatic centrifugal decompression system fitted to the exhaust cam, which lifts one exhaust valve to facilitate starting.
In addition to electric start, the 2021 KX250 also becomes Kawasaki’s first 250 motocross bike equipped with a coned disk-spring hydraulic clutch. The new high-capacity coned disk-spring clutch offers a more direct feel and an easier pull for lighter lever action, reducing fatigue while on the racetrack. The use of coned disk-spring contributes to lighter clutch actuation when the lever is pulled in, and a wider clutch engagement range, which facilitates control.
In order to promote clean separation and help reduce drag when the clutch is pulled in, the friction plates were designed with offset segments. The hydraulic clutch is designed to provide a more consistent feeling through minimal change in clutch play as the clutch heats up during heavy use.
Utilizing the finger-follower valve actuation — a valve train designed by Kawasaki’s World Superbike engineers — helps achieve a high rev limit and allows for the use of more aggressive cam profiles, which contributes to high rpm performance. A diamond-like carbon coating on the finger followers helps protect against wear. Complementing the aggressive cams are large-diameter intake and exhaust valves with high lift, which flow more air and contribute to strong power.
The processing for the intake and exhaust ports has been revised with a new, larger-diameter angle that contributes to increased performance. The cams benefit from a thin and highly durable gas soft-nitride treatment to reduce wear and increase high rpm reliability and the exhaust cam timing has been retarded 3º for better engine performance. Lightweight titanium valves reduce reciprocating weight and offer high rpm reliability, while the valve springs now feature a higher spring rate to match the higher rev limit.
The addition of a 3 mm longer connecting rod decreases lateral force on the cylinder walls as the piston moves up and down, helping to reduce mechanical loss and improving reliability. The cylinder is offset 3 mm forward, reducing mechanical loss and increasing engine performance. A cylinder head mounted cam chain tensioner adds to the KX250’s dependability by offsetting the increased loads from the aggressive camshaft and high revving engine.
A plateau honing process of the cylinder bore results in a smooth surface with good oil-retention. The smooth surface also helps to reduce mechanical loss and improve power. A revised combustion chamber design and a flatter piston crown contribute to increased performance.
The high-performance piston features the same design used by Kawasaki’s factory racers and contributes strong performance at all rpm. A short skirt, reinforced external ribs and the use of a bridged-box piston, featuring internal bracing, allow for a lightweight and strong piston design. A dry film lubricant coating on the piston skirts reduces friction at low rpm and helps with the piston bedding-in process.
To reduce weight, an update has been made to the crankshaft web design and the pressure balance has been revised inside the crankcase, adding to the engine’s increased performance. Low-friction plain bearings on the crankshaft pin help reduce mechanical loss and lift overall performance. For strengthening of the transmission, axle spacing has been revised to match the increased engine output. Along with matching the revised axle spacing, shape-optimized gears contribute to weight reduction.
The airbox construction features a shorter, tapered intake funnel, contributing to increased high rpm performance. The KX250 was the first production motocross bike with dual injectors an injector downstream of the throttle valve that is tasked with delivering a smooth, instant response, and a second, upstream injector located close to the airbox for a significant contribution to engine output at high rpm.
The exhaust system length helps increase high rpm performance and the hydro-formed joint pipe features a reverse taper design. A large throttle body flows a great volume of air and provides a boost in high rpm performance. Adding to Kawasaki’s engineering efforts for optimized airflow is the positioning of the intake duct for a straight approach for intake air. The downdraft-style intake routing increases the intake air’s approach angle into the cylinder, improving cylinder-filling efficiency and increasing the engines power.
DFI COUPLERS
Contributing to the race-winning engine characteristics, the digital fuel injection system of the KX250 features a coupler package that has set the industry standard. Each KX250 motorcycle comes standard with three different couplers, easily allowing riders to select pre-programmed fuel injection and ignition mapping to suit their riding style or track conditions.
The four-pin DFI couplers select maps that are designed for standard, hard or soft terrain settings. Changing the engine map is as simple as connecting the coupler cap of choice. For riders looking to fine tune their ECU settings, the KX FI Calibration Kit (Handheld) is offered as a Kawasaki Genuine Accessory and provides access to the fully programmable ECU. Used by the factory race teams, the handheld device eliminates the need for a trackside laptop and gives riders the ability to create custom maps for precise adjustment of fuel and ignition settings. The user-friendly device can store up to seven preset maps and is PC-compatible.
LAUNCH CONTROL
The launch control system of the KX250 motorcycle is a major advantage and favorite for riders who are focused on getting to the first turn ahead of their competition. The push-button activation retards ignition timing in first and second gear, helping maximize traction on slippery surfaces like concrete starting pads and put the bike’s potent power to the ground. Once the rider shifts into third gear, normal ignition mapping immediately resumes and full power is restored.
CHASSIS
• NEW KX450-based slim aluminum perimeter frame
• NEW Engine is used as a stressed member
• NEW Steering head area with optimized rigidity
• NEW KX450 swingarm for increased rear traction
The KX250’s new slim aluminium perimeter frame is based off of its KX450 counterpart and with lightweight, nimble handling, and slim ergonomics in mind. Its design is a lightweight construction composed of forged, extruded, and cast parts. The new frame offers a better overall rigidity balance, and while many of the parts are common with the KX450’s frame, the cast parts like shock tower mount and engine hangers were designed specifically for the needs of the KX250. Adding to the frame’s rigidity balance is the use of the engine as a stressed member. The steering head area, main frame rails with updated cross-sections, line for the swingarm brackets, and wider lower frame rails have all been revised and contribute to the overall rigidity balance.
The addition of a KX450 swingarm delivers the rigidity necessary to match the frame and helps to increase traction at the rear wheel. The center of gravity and key dimensions such as swingarm pivot, output sprocket and rear axle locations have all been carefully selected so that the rear tire drives the bike forward.
SUSPENSION & BRAKES
• NEW Lower triple clamp design
• NEW Revised linkage ratios
• NEW Fine-tuned front and rear suspension settings
• NEW Smaller-diameter 240 mm rear disc
• NEW KX450 front master cylinder
The KX250 is equipped with large diameter 48 mm KYB inverted coil-spring front forks that offer optimum action at the initial part of the fork stroke. The forks feature large-diameter inner tubes, enabling the use of 25 mm damping pistons and delivering smooth action and firm damping. A Kashima Coat on the forks’ outer tubes creates a hard, low-friction surface to help prevent wear abrasion on the inside of the tubes, ensuring the sliding surfaces remain smooth over time while protecting the outside against corrosion. The lubricating material in the coat contributes to smoother suspension action and a better overall ride feel. The lower triple clamp has been revised for optimized rigidity and reduced weight, while contributing to the front’s ability to absorb bumps.
In the rear, a KYB shock unit complements the front fork. The rear shock features dual compression adjustability, which allows high-speed and low-speed damping to be tuned separately. Kashima Coat on the tank cylinder helps prevent wear abrasion and reduces friction for smoother suspension action.
A new Uni-Trak rear suspension system mounts the linkage arm below the swingarm, allowing a longer rear suspension stroke. The linkage ratios have been revised, now using the same as those found on the KX450 motorcycle, contributing to both increased absorption and damping performance. Both front and rear suspension feature new fine-tuned settings that are designed to match the frame and provide increased bump absorption as well as increased traction.
Contributing to the numerous factory-style racing components on the KX250 motorcycle are petal disc brakes. Up front is an oversized 270 mm Braking brand rotor, which delivers strong braking force and superb control. A new front master cylinder like the one on the KX450 adds to the high level of control and overall feedback found in the front brake.
On the rear, a new smaller-diameter 240 mm Braking brand disc contributes to controllability and offers optimized stopping performance. The petal-style discs contribute to both sporty looks and help deflect debris. A rear caliper guard helps protect the caliper from damage.
ERGONOMICS & ERGO-FIT ADJUSTABLE COMPONENTS
• NEW Factory-style 1-1/8” Renthal Fatbar Handlebar
Kawasaki continues its unmatched commitment towards providing riders with class-leading comfort thanks to its ERGO-FIT adjustable handlebar mounting system and footpegs to fit a variety of riders and riding styles. New for 2021 is a factory-style 1-1/8” thick aluminum Renthal Fatbar handlebar, a popular aftermarket part that is now a standard feature. The handlebars feature four-way adjustable mounts. The multi-position handlebars offer two mounting holes with 35 mm of adjustability, and the 180-degree offset clamps boast four individual settings to suit different size riders. The footpegs feature dual-position mounting points, with a lower position that reduces the standard setting by an additional 5 mm. The lower position effectively lowers the center of gravity when standing, and reduces knee angle when taller riders are seated.
BODYWORK & SEAT
• NEW Bodywork facilitates rider movement
• NEW Flatter design at the top of the fuel tank
• NEW Slimmer radiator shrouds
• NEW Smoother engine covers
• NEW Gold finish on the oil cap and generator cover plugs
Complementing the improved peak power and precise handling of the KX250 is sleek new bodywork with factory-style graphics that helps ensure it’s the sharpest looking bike in the paddock and further reflect its highly-tuned performance.
For 2021, the bodywork has been designed to facilitate rider movement with long, smooth surfaces that make it easy to slide back and forth. The seams between the shrouds, seat, and side covers are as flush as possible to help the rider move around on the bike. A revised design on the top of the fuel tank allows an even flatter progression from the seat to the tank, which gives the rider greater freedom of movement when changing riding position and facilitates sitting farther forward. The single-piece radiator shrouds are now slimmer where they come in contact with the rider’s legs and positioned closer to the frame. In-mold graphics result in an ultra-smooth surface and contribute to the KX250’s factor-racer looks.
Engine covers have been redesigned and are smooth in order to not impede rider movement. Helping the KX250 retain its factory-style look is a new gold finish on the oil cap and the two plugs on the generator cover, while the rims are coated in black alumite.
Kawasaki Team Green Racer Rewards
Kawasaki Team Green Racer Rewards return for the 2021 racing season with more than seven million dollars in contingency available for eligible KX riders. Team Green’s Racer Rewards program will be available at more than 240 events across the nation. Motocross racers will have more than $5.4 million up for grabs, while off-road riders will also be rewarded with more than $2.2 million available.
KAWASAKI KX250
Color: Lime Green
MSRP: $8,299
Availability: Now
2021 KAWASAKI KX450 MOTORCYCLE
The Kawasaki KX450 motorcycle returns as the flagship model in the Kawasaki KX lineup for 2021 and boasts several new updates to maintain its edge as the leader in its class. Tuned to best suit race-experienced riders, the 449cc liquid-cooled, four-stroke engine with improved engine power, slim aluminum perimeter frame, Showa A-KIT technology suspension, redesigned hydraulic clutch and electric start are the ultimate combination of a championship winning package.
The KX450 is built with race-winning components to help Kawasaki riders get to the top step of the podium. For 2021 the KX450 receives engine updates for increased performance, a new coned disk-spring hydraulic clutch, and a new 1-1/8” Renthal Fatbar handlebar.
From the showroom to the racetrack, the performance of Kawasaki’s KX family of motorcycles is proof of its engineering pedigree. It truly is The Bike That Builds Champions.
ENGINE
• NEW Dry film lubricant coating on the piston skirt
• NEW Larger diameter clutch plates and revised friction material
• NEW Coned disk-spring hydraulic clutch for improved clutch performance
The four-stroke, single cylinder, DOHC, water-cooled 449cc lightweight engine package utilizes input derived directly from the Monster Energy Kawasaki race team, producing peak power and a torque curve that makes it easy to get on the gas early. The potent KX450 engine features an electric start, which is activated by the push of a button and powered by a compact Li-ion battery.
Kawasaki utilizes top-level road racing technology in the KX450 valve train, using designs from Kawasaki World Superbike engineers. It uses finger-follower valve actuation, enabling larger-diameter valves and more aggressive cam profiles. The intake and exhaust valves are formed from lightwight titanium, while a bridged-box piston uses the same design as the race team’s factory motorcycles. A new dry film lubricant coating on the piston skirt reduces friction between the piston and cylinder wall, contributing to increased performance.
A close-ratio five speed transmission features lightweight gears and shafts to keep weight down, yet retain strength, while contributing to the motorcycle’s winning performance. The transmision is paired with a new high-capacity coned disk-spring hydraulic clutch for 2021.
The clutch’s coil springs have been replaced with a coned disk-spring, resulting in lighter clutch actuation when the lever is pulled in, and a wider clutch engagement range to help facilitate control. Larger diameter clutch plates and revised friction material is designed to provide a consistent feeling through minimal change in play as the clutch heats up during heavy use. The friction plates feature offset segments to help promote clean separation of the discs and reduce drag when the clutch is pulled in.
CHASSIS
An industry-leading slim aluminum perimeter frame provides precise cornering through excellent front-end feel and agility when riding at high speeds. The frame’s lightweight construction is composed of forged, extruded and cast parts, while the engine is used as a stressed member and adds to the frames rigidity balance.
A lightweight alloy swingarm is constructed of a cast front section and twin tapered hydro-formed spars in a raw aluminum finish, complementing the frame. Engineers carefully placed the dimension of the swingarm pivot, output sprocket and rear axle locations, helping to focus on center of gravity and balanced handling.
SUSPENSION & BRAKES
High-performance Showa 49 mm coil spring front forks with A-KIT technology can be found up front, featuring large diameter inner tubes that are the same size as those found on the machines of Kawasaki’s factory racing team (KRT). The forks enable the use of large damping pistons for smooth action and firm damping.
In the rear, a new Uni-Trak linkage system is designed to work in conjunction with the Showa shock, aluminum frame and swingarm. The linkage, which is mounted below the swingarm, allows for a longer rear suspension stroke and more precise rear suspension tuning. The Showa Compact Design rear shock boasts A-KIT technology with large diameter compression adjusters, improving on the high frequency movements found on today’s motocross tracks.
An oversized 270 mm, petal-shaped front brake rotor from the renowned manufacturer, Braking, is fitted to perfectly complement the powerful engine of the KX450. The rear is equipped with a 250 mm petal-shaped Braking rotor that matches the large front disc.
ERGONOMICS & ERGO-FIT ADJUSTABILITY
• NEW Factory-style 1-1/8” Renthal Fatbar handlebar
New for the 2021 KX450 is a factory-style aluminum Renthal Fatbar handlebar that helps to reduce vibration and shocks transmitted to the rider through the thicker 1-1/8” handlebar. The new handlebar grip position is lower and closer to the rider, making it easier for the rider to weight the front wheel.
Kawasaki continues its umatched commitment towards providing riders with class-leading ERGO-FIT comfort thanks its adjustable handlebar mounting system and footpegs to fit a variety of riders and riding styles. The handlebars feature four-way adjustable mounts.
The multi-positition handlebars offer two mounting holes with 35 mm of adjustability, and the 180-degree offset clamps boast four individual settings to suit different size riders. The footpegs feature dual-position mounting points, with a lower position that reduces the standard setting by an additional 5 mm. The lower position effectively lowers the center of gravity when standing, and reduces knee angle when tallers riders are seated.
BODYWORK & SEAT
Complementing the championship proven technology, the 2021 KX450 features aggressive styling along with in-mold graphics on the radiator shrouds that result in an ultra-smooth surface and racy look needed to finish at the top of its class. The sleek bodywork has been molded to match the V-mounted radiators and narrow chassis design. Each piece of the bodywork has been designed to help facilitate riders movement with long, smooth surfaces that make it easy to slide back and forth.
Kawasaki Team Green Racer Rewards
Kawasaki Team Green Racer Rewards return for the 2021 racing season with more than seven million dollars in contingency available for eligible KX riders. Team Green’s Racer Rewards program will be available at more than 240 events across the nation. Motocross racers will have more than $5.4 million up for grabs, while off-road riders will also be rewarded with more than $2.2 million available.
KAWASAKI KX450
Color: Lime Green
MSRP: $9,399
Availability: Now
