Enduro Bikes
2021Kawasaki KLX450R
40 fields on record
The 2021 Kawasaki KLX450R is a competitive-focused enduro machine built for serious off-road riders and motocross enthusiasts. Powered by a liquid-cooled 449cc single-cylinder four-stroke engine with DOHC technology, it delivers reliable performance on challenging terrain. Known for its lightweight construction and nimble handling, the KLX450R excels in both trail riding and amateur racing applications.
- Capacity
- 449.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Wet weight
- 126.0 kg
- Seat height
- 935 mm
- Power
- 35.4 HP (26.0 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built purely for aggressive trail riding, enduro competition, and technical off-road terrain rather than road use.
- Built for
- A light, high-revving, single-cylinder dirt weapon with fully adjustable premium suspension that rewards an active, standing-up riding style.
- Not ideal for
- Not suitable for commuting, highway travel, passengers, or riders seeking a plush, low, easy-to-manage everyday bike.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 449.0 ccm
- Power
- 35.4 HP (26.0 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.2810 HP/kg (wet)
- Bore x stroke
- 96.0 x 62.1 mm
- Compression
- 12.0:1
- Cooling system
- Liquid
- Fuel system
- Carburettor
- Starting
- Electric & kick
- Ignition
- Digital AC-CDI
- Valves per cylinder
- 4
- Lubrication system
- Forced lubrication, semi and #8209;dry sump
- Torque
- Not on record - add it
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet multi-disc, manual
Dimensions & weight
- Wheelbase
- 1480 mm
- Overall length
- 2220 mm
- Overall width
- 860 mm
- Overall height
- 1250 mm
- Seat height
- 935 mm
- Wet weight
- 126.0 kg
- Fuel capacity
- 8.00 litres
- Ground clearance
- 315 mm
- Dry weight
- Not on record - add it
Chassis & suspension
- Frame
- Perimeter, aluminium
- Front suspension
- 48 mm inverted AOS type telescopic fork with 22-way compression and 18-way rebound damping
- Rear suspension
- Uni-Trak with 22-way low-speed, 2 turns or more high speed compression damping, 22 way rebound damping and adjustable spring preload
- Front wheel travel
- 305 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 28.0°
- Trail
- 122 mm
Brakes & wheels
- Front brakes
- Double disc. Dual piston
- Front brakes diameter
- 250 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 240 mm
- Front tyre
- 80/100-21
- Rear tyre
- 120/90-18
Other
- Color options
- Lime Green
- Warranty
- 3
Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.
What changed, year to year
Differences highlighted| Specification | 2008 | 2013 | 2017 | 2020 | 2021 | 2024 |
|---|---|---|---|---|---|---|
| Capacity | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc | 449 cc |
| Seat height | 940 mm | 935 mm | 935 mm | 935 mm | 935 mm | 935 mm |
| Fuel capacity | 7.9 L | 8 L | 8 L | 8 L | 8 L | 8 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Kawasaki KLX450R?
The 2021 Kawasaki KLX450R has a Capacity of 449.0 ccm (27.40 cubic inches).
What engine power does the Kawasaki KLX450R have?
The 2021 Kawasaki KLX450R has a Power of 35.4 HP (26.0 kW).
How many gears does the Kawasaki KLX450R have?
The 2021 Kawasaki KLX450R has a Gearbox of 5-speed.
How much does the Kawasaki KLX450R weigh?
The 2021 Kawasaki KLX450R has a Wet weight of 126.0 kg (277.8 pounds).
Shop this bike
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The 2021 Kawasaki KLX450R is a powerful and well-built off-road motorcycle that is an excellent choice for riders looking for a versatile and capable machine. With its 449cc engine, the KLX450R offers plenty of power for tackling tough terrain, making it perfect for riders who want to take on challenging off-road trails. The bike's lightweight and agile frame also make it easy to handle, while its advanced suspension system provides a smooth and comfortable ride even over rough terrain. Overall, the 2021 KLX450R is a top-notch off-road motorcycle that delivers impressive performance and durability.
In addition to its exceptional performance, the 2021 Kawasaki KLX450R also boasts a stylish and modern design that is sure to turn heads. The bike's aggressive bodywork and sharp lines give it a striking appearance, while its bold color options make it stand out from the crowd. With its high-quality construction and attention to detail, the KLX450R is a motorcycle that not only looks great but is also built to last. Whether you're hitting the trails or carving through the desert, the 2021 KLX450R is a fantastic choice for riders who want a high-performance off-road machine that looks as good as it rides.
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