1968 Yamaha DT1 250
Specifications and workshop reference information for the 1968 Yamaha DT1 250, 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 | Air-cooled, 2-stroke, single-cylinder, piston port |
| Displacement | 246 cc |
| Bore × Stroke | 70 mm × 64 mm |
| Compression Ratio | 6.4:1 |
| Maximum Power | 22.8 hp @ 7,000 rpm |
| Maximum Torque | 23.7 Nm @ 6,500 rpm |
| Carburetor | Mikuni VM26 |
| Lubrication | Yamaha Autolube |
| Fuel Mix Ratio | N/A - oil injection |
| Ignition | Flywheel magneto |
| Spark Plug | N/A |
| Spark Plug Gap | N/A |
Transmission
| Transmission Type | 5-speed manual |
| Clutch | Wet multi-plate |
| Primary Reduction | N/A |
| Final Reduction | 15 / 44 |
| Overall Reduction | N/A |
Dimensions
| Overall Length | 2060 mm |
| Overall Width | 890 mm |
| Overall Height | 1130 mm |
| Wheelbase | 1360 mm |
| Ground Clearance | N/A |
| Fuel Tank Capacity | 9.5 L |
Chassis
| Frame Type | Duplex cradle steel |
| Caster Angle | N/A |
| Trail | N/A |
| Front Suspension | Telescopic fork |
| Rear Suspension | Twin shock swingarm |
| Front Suspension Travel | N/A |
| Rear Suspension Travel | N/A |
Brakes & Wheels
| Front Tire | 3.25 × 19 |
| Rear Tire | 4.00 × 18 |
| Front Brake | Drum |
| Rear Brake | Drum |
250cc Other Specs
Community
VMX Owners Forum
Discuss vintage motocross bikes, restorations, tuning and riding.
