14 August. Friday 2026
Kawasaki KX450 Sr - 2026 Specifications and Reviews
The 2025 Kawasaki KX450 SR is a competition-focused motocross bike engineered for serious racers and advanced riders seeking reliable performance. Its liquid-cooled 449cc four-stroke engine delivers consistent power through a five-speed transmission, while the advanced fuel injection system ensures precise throttle response across all conditions. Built for victory on the track, this machine combines lightweight agility with championship-proven engineering.
General information | |
| Color Options | Lime Green |
| Price | US$ 13599. MSRP depends on country, taxes, accessories, etc. |
| Category | Cross / motocross |
| Model | Kawasaki KX450 SR |
Engine and Transmission Specifications | |
| Starting | Electric |
| Clutch | Wet multi-disc, manual |
| Final Drive | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling System | Liquid |
| Ignition | Digital CDI with 3 Coupler Options |
| Fuel Control | Double Overhead Cams/Twin Cam (DOHC) |
| Induction | Injection. DFI® with 44mm Keihin throttle body |
| Bore x Stroke | 96.0 x 62.0 mm (3.8 x 2.4 inches) |
| Compression Ratio | 12.5:1 |
| Capacity: | 449.0 ccm (27.40 cubic inches) |
| | |
Physical measures and capacities | |
| Fuel Capacity | 6.20 litres (1.64 US gallons) |
| Wheelbase | 1485 mm (58.5 inches) |
| Ground Clearance | 340 mm (13.4 inches) |
| Overall Width | 820 mm (32.3 inches) |
| Overall Length | 2185 mm (86.0 inches) |
| Overall Height | 1270 mm (50.0 inches) |
| Seat Height | 955 mm (37.6 inches) If adjustable, lowest setting. |
| Wet Weight | 112.5 kg (248.0 pounds) |
| Dry Weight | 105.6 kg (232.7 pounds) |
| | |
Kawasaki KX450 Sr dimensions and frame | |
| Wheels | D.I.D. DIirt Star-X rims, black |
| Rear Brakes | Single disc. Single-piston caliper. |
| Brake Disc Diameter | 240 mm (9.4 inches) |
| Front Brakes | Single disc. Dual pistons. |
| Rear Tyre | 120/80-19 |
| Front Tyre | 80/100-21 |
| Rear Wheel Travel | 307 mm (12.1 inches) |
| Rear Suspension | Uni-Trak® gas charged shock with piggyback reservoir with dual-range (4 turns stepless high speed/19-way low-speed) compression damping, 38-way rebound damping and adjustable preload |
| Front Wheel Travel | 305 mm (12.0 inches) |
| Front Suspension | 49mm inverted telescopic coil-spring fork with 16-way compression damping and 16-way rebound damping |
| Trail | 114 mm (4.5 inches) |
| Frame | Aluminum perimeter |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Update specs | Report missing specs or required updates. |
| Comments | Smartphone connectivity. Traction control. Launch control. Power modes. Racing components. Special tuning. |
| Rake (fork angle) | 26.6° |
| Exhaust system | Pro Circuit Ti-6 titanium exhaust |
| Driveline | D.I.D. gold chain |
| Engine type | Single cylinder, four-stroke |
| Year | 2025 |
Performance Profile & Rider Fit
Best For
Track85%
City5%
Cornering95%
Daily Riding10%
Touring5%
Passenger0%
Rider Profile
| Best For | This is a full-race motocross machine best suited to experienced off-road or motocross riders, not beginners or casual street riders. |
| Purpose | Built purely for motocross racing and closed-course off-road riding, with a titanium race exhaust, traction/launch control and fully adjustable suspension aimed at podium performance. |
| Rider Fit | The tall 955mm seat height, light dry weight, and aggressive ergonomics demand good rider fitness, strong legs, and confidence standing and shifting body weight actively over rough terrain. |
| Character | A razor-sharp, high-revving single-cylinder race weapon that rewards aggressive input with explosive acceleration and pinpoint cornering agility on dirt. |
| Not Ideal For | This bike is not suited for daily commuting, highway touring, passengers, or riders wanting comfort and low maintenance. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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