1981 Honda CR250
Specifications and workshop reference information for the 1981 Honda CR250, 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 | Liquid-cooled 2-stroke single-cylinder reed valve |
| Displacement | 248 cc |
| Bore × Stroke | 70.0 mm × 64.4 mm |
| Compression Ratio | 8.0:1 |
| Maximum Power | Approx. 39 hp |
| Maximum Torque | |
| Carburetor | Keihin PE36 |
| Lubrication | Pre-mix |
| Fuel Mix Ratio | 20:1 |
| Ignition | CDI magneto |
| Spark Plug | NGK BR8ES |
| Spark Plug Gap | 0.6 - 0.7 mm |
Transmission
| Transmission Type | 5-speed close-ratio |
| Clutch | Wet multi-plate |
| Primary Reduction | 3.000 |
| Final Reduction | Chain drive |
| Overall Reduction | |
Dimensions
| Overall Length | 86.4 in |
| Overall Width | 36.2 in |
| Overall Height | 48.0 in |
| Wheelbase | 58.7 in |
| Ground Clearance | 13.4 in |
| Fuel Tank Capacity | 2.4 gal |
Chassis
| Frame Type | Double cradle steel frame |
| Caster Angle | 28° |
| Trail | 4.8 in |
| Front Suspension | Showa leading-axle forks |
| Rear Suspension | Pro-Link monoshock |
| Front Suspension Travel | 11.8 in |
| Rear Suspension Travel | 11.4 in |
Brakes & Wheels
| Front Tire | 3.00 × 21 |
| Rear Tire | 4.50 × 18 |
| Front Brake | Single leading shoe drum |
| Rear Brake | Single leading shoe drum |
250cc Other Specs
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