1986 Kawasaki KX250 Specifications and Specs
Specifications and workshop reference information for the 1986 Kawasaki KX250, including engine, chassis, service data and setup details.
Note: Specs are compiled from factory data, manuals and owner feedback. Bikes vary — if yours is different, jump into the forum and share it.
General Specifications
| Engine Type | Single-cylinder, liquid-cooled, KIPS reed valve, 2-stroke |
| Displacement | 249 cc |
| Bore × Stroke | 69.0 mm × 66.0 mm |
| Compression Ratio | 7.2:1 |
| Maximum Power | 45 hp @ 8,000 rpm |
| Maximum Torque | 40 Nm @ 7,000 rpm |
| Carburetor | Mikuni VM38SS |
| Lubrication | Premix |
| Fuel Mix Ratio | 20:1 |
| Ignition | CDI |
| Spark Plug | NGK B8ES |
| Spark Plug Gap | 0.6 - 0.7 mm |
Transmission
| Transmission Type | 5-speed constant mesh |
| Clutch | Wet multi-plate |
| Primary Reduction | 2.952 (62/21) |
| Final Reduction | 3.846 (50/13) |
| Overall Reduction | 11.35:1 |
Dimensions
| Overall Length | 2235 mm |
| Overall Width | 895 mm |
| Overall Height | 1235 mm |
| Wheelbase | 1510 mm |
| Ground Clearance | 320 mm |
| Fuel Tank Capacity | 11.0 L |
Chassis
| Frame Type | Single backbone steel frame |
| Caster Angle | 28.0° |
| Trail | 116 mm |
| Front Suspension | 43 mm Kayaba cartridge forks |
| Rear Suspension | Uni-Trak monoshock |
| Front Suspension Travel | 300 mm |
| Rear Suspension Travel | 320 mm |
Brakes & Wheels
| Front Tire | 3.00-21 |
| Rear Tire | 4.60-18 |
| Front Brake | Single hydraulic disc |
| Rear Brake | Single hydraulic disc |
250cc Other Specs
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