1973 Yamaha RT360
Specifications and workshop reference information for the 1973 Yamaha RT360, 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 | 351 cc |
| Bore × Stroke | 80.0 × 70.0 mm |
| Compression Ratio | 6.9:1 |
| Maximum Power | Approx. 30 hp |
| Maximum Torque | Approx. 38 Nm |
| Carburetor | Mikuni VM34SC |
| Lubrication | Autolube oil injection system |
| Fuel Mix Ratio | N/A (oil injection) |
| Ignition | Contact breaker points |
| Spark Plug | NGK B8ES |
| Spark Plug Gap | 0.6 – 0.7 mm |
Transmission
| Transmission Type | 5-speed manual |
| Clutch | Wet multi-plate |
| Primary Reduction | 3.409 (75/22) |
| Final Reduction | 3.000 (15/45) |
| Overall Reduction | Varies by gear |
Dimensions
| Overall Length | 2,180 mm |
| Overall Width | 885 mm |
| Overall Height | 1,190 mm |
| Wheelbase | 1,395 mm |
| Ground Clearance | 235 mm |
| Fuel Tank Capacity | 9.5 L |
Chassis
| Frame Type | Steel tubular, single cradle |
| Caster Angle | 27° |
| Trail | 110 mm |
| Front Suspension | Telescopic fork |
| Rear Suspension | Twin shock swingarm |
| Front Suspension Travel | Approx. 180 mm |
| Rear Suspension Travel | Approx. 120 mm |
Brakes & Wheels
| Front Tire | 3.00-21 |
| Rear Tire | 4.00-18 |
| Front Brake | Drum |
| Rear Brake | Drum |
360cc Other Specs
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