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The KX450F’s engine has been its strength since its beginning, and with this model update it receives even more power and torque thanks to refinements to the intake and exhaust systems. Riders will notice a more aggressive throttle response, stronger drive out of corners, and that it keeps pulling strongly at higher rpm.
The KX450F’s engine has been its strength since its beginning, and with this model update it receives even more power and torque thanks to refinements to the intake and exhaust systems. Riders will notice a more aggressive throttle response, stronger drive out of corners, and that it keeps pulling strongly at higher rpm.
While maintaining the high level of handling performance of the previous model, rear-wheel traction and controllability have been improved. The redesigned frame contributes to this change and to improved handling. This is complemented by improved components all around, including the brakes, suspension and bodywork, to offer the rider a stronger, more refined level of control.
While maintaining the high level of handling performance of the previous model, rear-wheel traction and controllability have been improved. The redesigned frame contributes to this change and to improved handling. This is complemented by improved components all around, including the brakes, suspension and bodywork, to offer the rider a stronger, more refined level of control.
The KX450F gives riders the advantage they need on the track, with Power Mode selection and Kawasaki TRaction Control both available at the push of a button, in addition to Launch Control Mode for ideal starts.
The KX450F gives riders the advantage they need on the track, with Power Mode selection and Kawasaki TRaction Control both available at the push of a button, in addition to Launch Control Mode for ideal starts.
Kawasaki’s new and improved app made specifically for riders to tune and manage their KX machines features added functionality that improves the user experience and opens new ways to enjoy their KX. Riders have access to more intuitive engine tuning functionality, greater selectability for launch and traction control, trip log capability, a monitoring function, and maintenance reminders.
Kawasaki’s new and improved app made specifically for riders to tune and manage their KX machines features added functionality that improves the user experience and opens new ways to enjoy their KX. Riders have access to more intuitive engine tuning functionality, greater selectability for launch and traction control, trip log capability, a monitoring function, and maintenance reminders.
Complementing the handling performance of its predecessor, a newly designed frame, revised swingarm and longer wheelbase offer improved rearend traction and controllability, and enhanced stability, contributing to improved overall performance.
Complementing the handling performance of its predecessor, a newly designed frame, revised swingarm and longer wheelbase offer improved rearend traction and controllability, and enhanced stability, contributing to improved overall performance.
High-performance brake package now includes Brembo components for both the front and rear brakes. The Brembo front caliper and master cylinder are complemented by a steel-braided brake line for increased controllability. The new Brembo rear brake caliper and master cylinder—Kawasaki firsts on a 450cc motocrosser—add to controllability on corner entry and through corners, contributing to faster cornering ability.
High-performance brake package now includes Brembo components for both the front and rear brakes. The Brembo front caliper and master cylinder are complemented by a steel-braided brake line for increased controllability. The new Brembo rear brake caliper and master cylinder—Kawasaki firsts on a 450cc motocrosser—add to controllability on corner entry and through corners, contributing to faster cornering ability.
At the front, optimized suspension settings offer improving shock absorption, while at the rear, the New Uni-Trak rear suspension has also been updated to further enhance performance.
At the front, optimized suspension settings offer improving shock absorption, while at the rear, the New Uni-Trak rear suspension has also been updated to further enhance performance.
Thanks to revised intake and exhaust systems and optimized fuel injection settings, the new engine improves performance with a more aggressive engine feeling. Stronger low-end power feel is complemented by improved power at mid to high rpm, and the difference is immediately noticeable when riders open the throttle, especially when accelerating out of high-speed corners. On the straights, the engine keeps pulling strongly through the high rpm range.
Thanks to revised intake and exhaust systems and optimized fuel injection settings, the new engine improves performance with a more aggressive engine feeling. Stronger low-end power feel is complemented by improved power at mid to high rpm, and the difference is immediately noticeable when riders open the throttle, especially when accelerating out of high-speed corners. On the straights, the engine keeps pulling strongly through the high rpm range.
Using the KTRC mode (T) button on the left handlebar, riders can quickly and easily select from Mode 1, Mode 2, or OFF to suit conditions and preference. The setting for both modes is initially the same, but the level of intervention for each mode can be set via RIDEOLOGY THE APP KX2.
Using the KTRC mode (T) button on the left handlebar, riders can quickly and easily select from Mode 1, Mode 2, or OFF to suit conditions and preference. The setting for both modes is initially the same, but the level of intervention for each mode can be set via RIDEOLOGY THE APP KX2.
Factory-style launch control system increases the chance of getting a good start by helping riders maximize traction when starting on a low-traction surface. The system is activated by simultaneously pressing the Power Mode (M) button and KTRC Mode (T) button on the left handle. The updated system includes a rev-limit control function that allows riders to focus on gate timing and clutch operation without having to spend energy on delicate throttle control. Using RIDEOLOGY THE APP KX2, riders can select from three levels of intervention (LOW, STD, HIGH) for the maps used by Launch Control Mode, as well as set the rev limit or turn the rev-limit control function off altogether.
Factory-style launch control system increases the chance of getting a good start by helping riders maximize traction when starting on a low-traction surface. The system is activated by simultaneously pressing the Power Mode (M) button and KTRC Mode (T) button on the left handle. The updated system includes a rev-limit control function that allows riders to focus on gate timing and clutch operation without having to spend energy on delicate throttle control. Using RIDEOLOGY THE APP KX2, riders can select from three levels of intervention (LOW, STD, HIGH) for the maps used by Launch Control Mode, as well as set the rev limit or turn the rev-limit control function off altogether.
Using the Power mode (M) button on the left handlebar, riders can quickly and easily switch between two engine map settings. These two maps, initially set to the same configuration, can be selected/programmed via RIDEOLOGY THE APP KX2.
Using the Power mode (M) button on the left handlebar, riders can quickly and easily switch between two engine map settings. These two maps, initially set to the same configuration, can be selected/programmed via RIDEOLOGY THE APP KX2.
Medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
Medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
Bodywork with smooth surfaces fit the rider to let them move freely—helpful when competing on the racetrack—while a new, improved seat and slim shrouds contribute to both more attractive looks and an enhanced ergonomic package.
Bodywork with smooth surfaces fit the rider to let them move freely—helpful when competing on the racetrack—while a new, improved seat and slim shrouds contribute to both more attractive looks and an enhanced ergonomic package.
A choice of four handlebar positions (25 mm forward, 15 mm forward, standard and 10 mm back) and two footpeg positions (standard, 5 mm lower) allows riders to tailor their riding position to suit body size and preference, offering them a feeling of confidence at offroad tracks.
A choice of four handlebar positions (25 mm forward, 15 mm forward, standard and 10 mm back) and two footpeg positions (standard, 5 mm lower) allows riders to tailor their riding position to suit body size and preference, offering them a feeling of confidence at offroad tracks.
The updated KX450F has the look of an athlete crouched at the starting line, ready to spring forward. The compact design, slim proportions and clean lines emphasize a design with nothing wasted; every part dedicated to victory.
The updated KX450F has the look of an athlete crouched at the starting line, ready to spring forward. The compact design, slim proportions and clean lines emphasize a design with nothing wasted; every part dedicated to victory.
Racing-inspired graphics, as seen on the KX450F, adopt Kawasaki’s legendary blue as an accent colour, reinforcing their presence in the market as “Kawasaki Racing Colours.” Positioning the graphics at the center of the shrouds creates a shared visual identity with the Ninja ZX series, contributing to a unified image across Kawasaki’s performance models.
Racing-inspired graphics, as seen on the KX450F, adopt Kawasaki’s legendary blue as an accent colour, reinforcing their presence in the market as “Kawasaki Racing Colours.” Positioning the graphics at the center of the shrouds creates a shared visual identity with the Ninja ZX series, contributing to a unified image across Kawasaki’s performance models.
The KX450F’s engine has been its strength since its beginning, and with this model update it receives even more power and torque thanks to refinements to the intake and exhaust systems. Riders will notice a more aggressive throttle response, stronger drive out of corners, and that it keeps pulling strongly at higher rpm.
The KX450F’s engine has been its strength since its beginning, and with this model update it receives even more power and torque thanks to refinements to the intake and exhaust systems. Riders will notice a more aggressive throttle response, stronger drive out of corners, and that it keeps pulling strongly at higher rpm.
While maintaining the high level of handling performance of the previous model, rear-wheel traction and controllability have been improved. The redesigned frame contributes to this change and to improved handling. This is complemented by improved components all around, including the brakes, suspension and bodywork, to offer the rider a stronger, more refined level of control.
While maintaining the high level of handling performance of the previous model, rear-wheel traction and controllability have been improved. The redesigned frame contributes to this change and to improved handling. This is complemented by improved components all around, including the brakes, suspension and bodywork, to offer the rider a stronger, more refined level of control.
The KX450F gives riders the advantage they need on the track, with Power Mode selection and Kawasaki TRaction Control both available at the push of a button, in addition to Launch Control Mode for ideal starts.
The KX450F gives riders the advantage they need on the track, with Power Mode selection and Kawasaki TRaction Control both available at the push of a button, in addition to Launch Control Mode for ideal starts.
Kawasaki’s new and improved app made specifically for riders to tune and manage their KX machines features added functionality that improves the user experience and opens new ways to enjoy their KX. Riders have access to more intuitive engine tuning functionality, greater selectability for launch and traction control, trip log capability, a monitoring function, and maintenance reminders.
Kawasaki’s new and improved app made specifically for riders to tune and manage their KX machines features added functionality that improves the user experience and opens new ways to enjoy their KX. Riders have access to more intuitive engine tuning functionality, greater selectability for launch and traction control, trip log capability, a monitoring function, and maintenance reminders.
Complementing the handling performance of its predecessor, a newly designed frame, revised swingarm and longer wheelbase offer improved rearend traction and controllability, and enhanced stability, contributing to improved overall performance.
Complementing the handling performance of its predecessor, a newly designed frame, revised swingarm and longer wheelbase offer improved rearend traction and controllability, and enhanced stability, contributing to improved overall performance.
High-performance brake package now includes Brembo components for both the front and rear brakes. The Brembo front caliper and master cylinder are complemented by a steel-braided brake line for increased controllability. The new Brembo rear brake caliper and master cylinder—Kawasaki firsts on a 450cc motocrosser—add to controllability on corner entry and through corners, contributing to faster cornering ability.
High-performance brake package now includes Brembo components for both the front and rear brakes. The Brembo front caliper and master cylinder are complemented by a steel-braided brake line for increased controllability. The new Brembo rear brake caliper and master cylinder—Kawasaki firsts on a 450cc motocrosser—add to controllability on corner entry and through corners, contributing to faster cornering ability.
At the front, optimized suspension settings offer improving shock absorption, while at the rear, the New Uni-Trak rear suspension has also been updated to further enhance performance.
At the front, optimized suspension settings offer improving shock absorption, while at the rear, the New Uni-Trak rear suspension has also been updated to further enhance performance.
Thanks to revised intake and exhaust systems and optimized fuel injection settings, the new engine improves performance with a more aggressive engine feeling. Stronger low-end power feel is complemented by improved power at mid to high rpm, and the difference is immediately noticeable when riders open the throttle, especially when accelerating out of high-speed corners. On the straights, the engine keeps pulling strongly through the high rpm range.
Thanks to revised intake and exhaust systems and optimized fuel injection settings, the new engine improves performance with a more aggressive engine feeling. Stronger low-end power feel is complemented by improved power at mid to high rpm, and the difference is immediately noticeable when riders open the throttle, especially when accelerating out of high-speed corners. On the straights, the engine keeps pulling strongly through the high rpm range.
Using the KTRC mode (T) button on the left handlebar, riders can quickly and easily select from Mode 1, Mode 2, or OFF to suit conditions and preference. The setting for both modes is initially the same, but the level of intervention for each mode can be set via RIDEOLOGY THE APP KX2.
Using the KTRC mode (T) button on the left handlebar, riders can quickly and easily select from Mode 1, Mode 2, or OFF to suit conditions and preference. The setting for both modes is initially the same, but the level of intervention for each mode can be set via RIDEOLOGY THE APP KX2.
Factory-style launch control system increases the chance of getting a good start by helping riders maximize traction when starting on a low-traction surface. The system is activated by simultaneously pressing the Power Mode (M) button and KTRC Mode (T) button on the left handle. The updated system includes a rev-limit control function that allows riders to focus on gate timing and clutch operation without having to spend energy on delicate throttle control. Using RIDEOLOGY THE APP KX2, riders can select from three levels of intervention (LOW, STD, HIGH) for the maps used by Launch Control Mode, as well as set the rev limit or turn the rev-limit control function off altogether.
Factory-style launch control system increases the chance of getting a good start by helping riders maximize traction when starting on a low-traction surface. The system is activated by simultaneously pressing the Power Mode (M) button and KTRC Mode (T) button on the left handle. The updated system includes a rev-limit control function that allows riders to focus on gate timing and clutch operation without having to spend energy on delicate throttle control. Using RIDEOLOGY THE APP KX2, riders can select from three levels of intervention (LOW, STD, HIGH) for the maps used by Launch Control Mode, as well as set the rev limit or turn the rev-limit control function off altogether.
Using the Power mode (M) button on the left handlebar, riders can quickly and easily switch between two engine map settings. These two maps, initially set to the same configuration, can be selected/programmed via RIDEOLOGY THE APP KX2.
Using the Power mode (M) button on the left handlebar, riders can quickly and easily switch between two engine map settings. These two maps, initially set to the same configuration, can be selected/programmed via RIDEOLOGY THE APP KX2.
Medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
Medium-compound ODI Lock-On Grips offer excellent grip feel, while their screw-type fastening system greatly facilitates the task of swapping grips.
Bodywork with smooth surfaces fit the rider to let them move freely—helpful when competing on the racetrack—while a new, improved seat and slim shrouds contribute to both more attractive looks and an enhanced ergonomic package.
Bodywork with smooth surfaces fit the rider to let them move freely—helpful when competing on the racetrack—while a new, improved seat and slim shrouds contribute to both more attractive looks and an enhanced ergonomic package.
A choice of four handlebar positions (25 mm forward, 15 mm forward, standard and 10 mm back) and two footpeg positions (standard, 5 mm lower) allows riders to tailor their riding position to suit body size and preference, offering them a feeling of confidence at offroad tracks.
A choice of four handlebar positions (25 mm forward, 15 mm forward, standard and 10 mm back) and two footpeg positions (standard, 5 mm lower) allows riders to tailor their riding position to suit body size and preference, offering them a feeling of confidence at offroad tracks.
The updated KX450F has the look of an athlete crouched at the starting line, ready to spring forward. The compact design, slim proportions and clean lines emphasize a design with nothing wasted; every part dedicated to victory.
The updated KX450F has the look of an athlete crouched at the starting line, ready to spring forward. The compact design, slim proportions and clean lines emphasize a design with nothing wasted; every part dedicated to victory.
Racing-inspired graphics, as seen on the KX450F, adopt Kawasaki’s legendary blue as an accent colour, reinforcing their presence in the market as “Kawasaki Racing Colours.” Positioning the graphics at the center of the shrouds creates a shared visual identity with the Ninja ZX series, contributing to a unified image across Kawasaki’s performance models.
Racing-inspired graphics, as seen on the KX450F, adopt Kawasaki’s legendary blue as an accent colour, reinforcing their presence in the market as “Kawasaki Racing Colours.” Positioning the graphics at the center of the shrouds creates a shared visual identity with the Ninja ZX series, contributing to a unified image across Kawasaki’s performance models.
2-Mode KTRC (Kawasaki TRaction Control), easily selectable from switches at the left handle.
Using the Traction (T) button on the left handlebar, riders can quickly and easily select from two levels (Weak, Strong) of traction control to suit conditions and preference. Riders may also elect to turn the system off.
Using the Traction (T) button on the left handlebar, riders can quickly and easily select from two levels (Weak, Strong) of traction control to suit conditions and preference. Riders may also elect to turn the system off.
Launch Control Mode is a motocross-use start mode that helps riders get the holeshot by minimising wheel spin off the start.
In motocross racing, getting a good start is critical. A few tenths of a second can make the difference between getting the holeshot or not. In slippery conditions, getting the maximum drive from a motocrosser requires precise control of the both the clutch and throttle. Launch Control Mode helps riders get a good start by complementing high-level technique with engine management. Featured on a mass-production motocrosser for the first time on Kawasaki's KX450F, the system activates a separate engine map designed to get a more efficient start off the line. The system is designed to the same specifications as that used by our factory racers competing in the AMA Supercross and Motocross championships. Launch Control Mode is activated simply by pressing the button on the handlebar. The Launch Control map slightly retards ignition timing to help tame the engine's strong torque and reduce wheel spin off the start. Launch Control Mode is only active in the first two gears off the start, disengaging and returning to the standard engine map automatically once the rider shifts into 3rd gear. The system gives riders a great advantage when lining up at the gate and puts them in a better position to win.
ERGO-FIT is an interface system that allows a wide range of riders to feel at one with their machine.
Proper fit is key for rider comfort and control. However, the ideal fit varies from rider to rider, depending on their physical dimensions and riding style. ERGO-FIT is an interface system designed to allow riders to find their ideal riding position. Various points of the chassis interface (the handlebar, footpegs and seat, etc) can be adjusted through a combination of interchangeable parts and parts with adjustable positions. This enables a wide range of riders to find a riding position that offers both comfort and control. Feeling at one with their machine, they will be able to experience how Kawasaki machines are fun and rewarding to ride. *Adjustable parts and their range of adjustability vary by model.
Smartphone connectivity contributes to an enhanced motorcycling experience by enabling riders to connect to their motorcycle wirelessly.
Clever technology enables riders to connect to their motorcycle wirelessly. Using the smartphone application RIDEOLOGY THE APP a number of instrument functions can be accessed, contributing to an enhanced motorcycling experience. Vehicle information (such as the odometer, fuel gauge, maintenance schedule, etc) can be viewed on the smartphone. Riding logs (varies by model, but may include GPS route, gear position, rpm, and other information) can be viewed on the smartphone. When connected, telephone (call, mail) notices are displayed on the instrument panel. Riders can also make changes to their motorcycle instrument display settings (preferred units, clock and date setting, etc) via the smartphone. And on certain models, it is even possible to check and adjust vehicle settings (such as Rider Mode, electronic rider support features, and payload settings) using the smartphone.
2-Mode KTRC (Kawasaki TRaction Control), easily selectable from switches at the left handle.
Using the Traction (T) button on the left handlebar, riders can quickly and easily select from two levels (Weak, Strong) of traction control to suit conditions and preference. Riders may also elect to turn the system off.
Using the Traction (T) button on the left handlebar, riders can quickly and easily select from two levels (Weak, Strong) of traction control to suit conditions and preference. Riders may also elect to turn the system off.
Launch Control Mode is a motocross-use start mode that helps riders get the holeshot by minimising wheel spin off the start.
In motocross racing, getting a good start is critical. A few tenths of a second can make the difference between getting the holeshot or not. In slippery conditions, getting the maximum drive from a motocrosser requires precise control of the both the clutch and throttle. Launch Control Mode helps riders get a good start by complementing high-level technique with engine management. Featured on a mass-production motocrosser for the first time on Kawasaki's KX450F, the system activates a separate engine map designed to get a more efficient start off the line. The system is designed to the same specifications as that used by our factory racers competing in the AMA Supercross and Motocross championships. Launch Control Mode is activated simply by pressing the button on the handlebar. The Launch Control map slightly retards ignition timing to help tame the engine's strong torque and reduce wheel spin off the start. Launch Control Mode is only active in the first two gears off the start, disengaging and returning to the standard engine map automatically once the rider shifts into 3rd gear. The system gives riders a great advantage when lining up at the gate and puts them in a better position to win.
ERGO-FIT is an interface system that allows a wide range of riders to feel at one with their machine.
Proper fit is key for rider comfort and control. However, the ideal fit varies from rider to rider, depending on their physical dimensions and riding style. ERGO-FIT is an interface system designed to allow riders to find their ideal riding position. Various points of the chassis interface (the handlebar, footpegs and seat, etc) can be adjusted through a combination of interchangeable parts and parts with adjustable positions. This enables a wide range of riders to find a riding position that offers both comfort and control. Feeling at one with their machine, they will be able to experience how Kawasaki machines are fun and rewarding to ride. *Adjustable parts and their range of adjustability vary by model.
Smartphone connectivity contributes to an enhanced motorcycling experience by enabling riders to connect to their motorcycle wirelessly.
Clever technology enables riders to connect to their motorcycle wirelessly. Using the smartphone application RIDEOLOGY THE APP a number of instrument functions can be accessed, contributing to an enhanced motorcycling experience. Vehicle information (such as the odometer, fuel gauge, maintenance schedule, etc) can be viewed on the smartphone. Riding logs (varies by model, but may include GPS route, gear position, rpm, and other information) can be viewed on the smartphone. When connected, telephone (call, mail) notices are displayed on the instrument panel. Riders can also make changes to their motorcycle instrument display settings (preferred units, clock and date setting, etc) via the smartphone. And on certain models, it is even possible to check and adjust vehicle settings (such as Rider Mode, electronic rider support features, and payload settings) using the smartphone.
| Engine type | Liquid-cooled, 4-stroke, single-cylinder |
|---|---|
| Compression ratio | 12.7:1 |
| Valve system | DOHC, 4 valves |
| Bore x stroke | 96.0 x 62.1 mm |
| Displacement | 449 cm³ |
| Fuel system | Fuel injection: 44 mm x 1 |
| Lubrication | Forced lubrication, semi‑dry sump |
| Starting System | Electric |
| Ignition System | Digital DC-CDI |
| Transmission | 5-speed, return shift |
|---|---|
| Clutch | Wet, multi disc |
| Primary Reduction Ratio | 2.727 (60/22) |
| Gear Ratios 1st | 1.750 (28/16) |
| Gear Ratios 2nd | 1.412 (24/17) |
| Gear Ratios 3rd | 1.188 (19/16) |
| Gear Ratios 4th | 1.000 (19/19) |
| Gear Ratios 5th | 0.875 (21/24) |
| Final drive | Chain |
| Final reduction ratio | 3.846 (50/13) |
| Frame type | Double-cradle, steel |
|---|---|
| Tyre, front | 80/100-21 51M |
| Tyre, rear | 120/80-19 63M |
| Steering angle L/R | 42° / 42° |
| Fuel capacity | 6.2 liter |
| Brakes, front | Dual semi-floating petal discs |
|---|---|
| Front Brake Diameter | Ø 270 mm |
| Front brake caliper type | Brembo dual-piston |
| Brakes, rear | Single petal disc |
| Rear Brake Diameter | Ø 240 mm |
| Rear brake caliper type | Brembo single-piston |
| Suspension, front | Inverted fork with adjustable compression and rebound damping |
| Front suspension diameter | Ø 49 mm |
| Suspension, rear | New Uni-Trak with adjustable dual-range (high/low-speed) compression damping, adjustable rebound damping and adjustable preload |
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