Motocross Bikes
2021Kawasaki KX250X
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The 2021 Kawasaki KX250X is a competition-focused motocross bike designed for intermediate to advanced riders seeking a lightweight, nimble machine. Powered by a 249cc liquid-cooled four-stroke engine with fuel injection and five-speed transmission, it delivers predictable power delivery and excellent handling characteristics. Best known for its agile aluminum frame and responsive performance in varied terrain conditions.
- Capacity
- 249.0 ccm
- Engine
- Single, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 104.4 kg
- Seat height
- 945 mm
- Power
- 43.0 HP (31.6 kW)
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a cross-country (X) variant of Kawasaki's motocrosser, it's purpose-made for closed-course off-road racing like hare scrambles and enduro-style events rather than general riding.
- Built for
- The bike feels light, flickable, and eager to change direction, rewarding an aggressive, attacking riding style over relaxed cruising.
- Not ideal for
- This is not the right choice for commuting, highway travel, passenger carrying, or riders wanting plush all-day comfort.
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
- 249.0 ccm
- Power
- 43.0 HP (31.6 kW)
- Engine type
- Single, four-stroke
- Power/weight ratio
- 0.4119 HP/kg (dry)
- Bore x stroke
- 78.0 x 52.2 mm
- Compression
- 14.1:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- CDI
- Lubrication system
- Forced lubrication, semi-dry sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Clutch
- Wet multi-disc, manual
Dimensions & weight
- Wheelbase
- 1486 mm
- Overall length
- 2169 mm
- Overall width
- 820 mm
- Overall height
- 1260 mm
- Seat height
- 945 mm
- Dry weight
- 104.4 kg
- Wet weight
- 109.0 kg
- Fuel capacity
- 6.20 litres
- Ground clearance
- 330 mm
Chassis & suspension
- Frame
- Aluminum perimeter
- Front suspension
- 48mm inverted telescopic coil spring fork with 23-way compression damping and 20-way rebound damping
- Rear suspension
- Uni-Trak® with dual-range (2.25 turns high speed/21-way low-speed) compression damping, 38-way rebound damping and adjustable preload
- Front wheel travel
- 315 mm
- Rear wheel travel
- 315 mm
- Rake (fork angle)
- 27.8°
- Trail
- 130 mm
Brakes & wheels
- Front brakes
- Single disc. Petal disc with dual-piston caliper
- Front brakes diameter
- 270 mm
- Rear brakes
- Single disc. Petal disc with single-piston caliper
- Front tyre
- 80/100-21
- Rear tyre
- 100/90-19
Other
- Color options
- Lime Green
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 | 2021 | 2023 | 2024 | 2026 | 2027 |
|---|---|---|---|---|---|
| Capacity | 249 cc | 249 cc | 249 cc | 249 cc | 249 cc |
| Dry weight | 104 kg | 104 kg | 104 kg | 104 kg | 104 kg |
| Seat height | 945 mm | 945 mm | 945 mm | 945 mm | 950 mm |
| Fuel capacity | 6.2 L | 6.2 L | 6.2 L | 6.2 L | 6.2 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 KX250X?
The 2021 Kawasaki KX250X has a Capacity of 249.0 ccm (15.19 cubic inches).
What engine power does the Kawasaki KX250X have?
The 2021 Kawasaki KX250X has a Power of 43.0 HP (31.6 kW).
How many gears does the Kawasaki KX250X have?
The 2021 Kawasaki KX250X has a Gearbox of 5-speed.
How much does the Kawasaki KX250X weigh?
The 2021 Kawasaki KX250X has a Dry weight of 104.4 kg (230.2 pounds).
Shop this bike
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The 2021 Kawasaki KX250X is a powerful and agile off-road motorcycle that delivers exceptional performance on the trails. With its lightweight chassis and potent 249cc engine, this bike is designed to tackle rugged terrains with ease. The sharp handling and responsive suspension make it a top contender in the off-road racing circuit. The KX250X also features advanced technology such as a digital fuel injection system and electric start, adding convenience and reliability to the riding experience. Overall, the 2021 Kawasaki KX250X is a formidable off-road motorcycle that combines power, agility, and cutting-edge technology for an exhilarating ride.
For off-road enthusiasts looking for a high-performance motorcycle, the 2021 Kawasaki KX250X offers an impressive combination of power and agility. Its lightweight chassis and potent 249cc engine make it a top contender in the off-road racing circuit. With advanced technology such as digital fuel injection and electric start, this bike offers not only power and performance, but also convenience and reliability. The KX250X's sharp handling and responsive suspension further enhance its capabilities on rugged terrains, making it a formidable option for riders looking for an exhilarating off-road experience.
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