14 August. Friday 2026
Kawasaki KX250 - 2021 Specifications and Reviews
The 2021 Kawasaki KX250 is a competitive 250cc motocross machine engineered for intermediate to advanced riders seeking aggressive performance on the track. Its potent single-cylinder four-stroke engine delivers strong mid-range power and responsive handling, making it an excellent choice for riders progressing through amateur racing classes and looking to maximize their competitive potential.
General information | |
| Category | Cross / motocross |
| Year | 2021 |
| Model | Kawasaki KX250 |
Engine and Transmission Specifications | |
| Clutch | Wet multi-disc, hydraulic |
| Transmission type | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Ignition | Digital CDI |
| Fuel control | Double Overhead Cams/Twin Cam (DOHC) |
| Fuel system | Injection. DFI® with 44mm Keihin throttle body and dual injectors |
| Bore x Stroke | 78.0 x 52.2 mm (3.1 x 2.1 inches) |
| Compression | 14.1:1 |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 249.0 ccm (15.19 cubic inches) |
| | |
Brakes, suspension, Frame and wheels | |
| Rear brakes | Single disc. Petal disc with single-piston caliper |
| Diameter | 270 mm (10.6 inches) |
| Front brakes | Single disc. Petal disc with dual-piston caliper |
| Rear tire | 100/90-19 |
| Front tire | 80/100-21 |
| Rear wheel travel | 315 mm (12.4 inches) |
| Rear Suspension | Uni-Trak with adjustable dual-range (2 turns high speed / 19-way low-speed) compression damping, adjustable 22-way rebound damping and fully adjustable spring preload |
| Front wheel travel | 315 mm (12.4 inches) |
| Front Suspension | 48mm inverted telescopic coil spring fork with 23-way compression damping and 20-way rebound damping |
| Trail | 130 mm (5.1 inches) |
| Rake (fork angle) | 28.6° |
| Frame type | Aluminum perimeter |
Physical measures and capacities | |
| Oil capacity | 0.80 litres (0.85 US quarts) |
| Fuel capacity | 6.40 litres (1.69 US gallons) |
| Wheelbase | 1486 mm (58.5 inches) |
| Ground clearance | 320 mm (12.6 inches) |
| Overall width | 820 mm (32.3 inches) |
| Overall length | 2172 mm (85.5 inches) |
| Overall height | 1270 mm (50.0 inches) |
| Seat height | 947 mm (37.3 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 107.3 kg (236.5 pounds) |
| Dry weight | 102.7 kg (226.4 pounds) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Comments | Launch control. |
| Starter | Electric |
| Color options | Lime Green |
Maintenance and service data | |
| Fork tube size | 47 mm (1.9 inches) |
| Sprockets | 13/48 (front/rear) |
| Chain links | 114 |
| Chain size | 520 |
| Idle speed | 1950 +/- 50 RPM |
| Coolant | 1.00 litres (0.26 US gallons) |
| Brake fluid | DOT 4 |
Performance Profile & Rider Fit
Best For
Track90%
City5%
Cornering85%
Daily Riding5%
Touring5%
Passenger0%
Rider Profile
| Best For | This is a full-blown motocross machine best suited to intermediate through expert off-road riders who already know how to manage a high-strung, clutch-dependent two-stroke-like power delivery from a modern 250cc four-stroke. |
| Purpose | Built purely for closed-course motocross racing and aggressive off-road riding, not for transportation or general road use. |
| Rider Fit | Its light 109.2 kg wet weight and tall 955 mm seat height demand an active, standing riding style and reward riders with good fitness, leg strength, and confidence throwing the bike around. |
| Character | Sharp, flickable, and eager to change direction, with a stiff perimeter aluminum frame and race-tuned suspension geometry that favor jumps, berms, and rapid transitions over comfort. |
| Not Ideal For | This is not the bike for commuting, highway travel, carrying a passenger, or riders wanting a plush, low-maintenance, easygoing ride. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Kawasaki KX250 is a powerful and capable motocross bike that delivers exceptional performance on the track. With a 249cc liquid-cooled, 4-stroke engine, it offers impressive power and torque for tackling challenging terrain and high-speed straightaways. The lightweight chassis and adjustable suspension make it easy to maneuver and control, giving riders the confidence to push their limits and take on any obstacle. The KX250 also features advanced technology such as electric start and a hydraulic clutch, enhancing its overall usability and comfort. Whether you're a seasoned racer or a recreational rider, the 2021 Kawasaki KX250 is a top contender in the competitive motocross market, delivering an exhilarating riding experience. In summary, the 2021 Kawasaki KX250 is a top-of-the-line motocross bike that offers impressive power, agility, and advanced features. With its high-performance engine, adjustable suspension, and modern technology, it's a great choice for riders looking to take their motocross game to the next level. Whether you're hitting the track for competition or enjoying off-road adventures, the KX250 delivers the reliability and performance that Kawasaki is known for. If you're in the market for a competitive motocross bike that offers an exhilarating ride, the 2021 Kawasaki KX250 is a solid choice.Add a Comment
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