| MODEL | YAMAHA RT-1 360 1970 - 1972 |
| Year | 1970 - 1972 |
| Engine Type | Two-stroke, five-port, single cylinder |
| Displacement / Capacity | 351 cc / 21.4 cu in |
| Bore X Stroke | 80 x 70 mm |
| Compression Ratio | 6.8:1 |
| Cooling System | Air cooled |
| Max Power | 22.3 kW / 30 hp @ 6000 rpm |
| Max Torque | 26.0 lb-ft @ 5500 rpm |
| Ignition | Magneto |
| Induction | VM32SH carburetor |
| Start System | Kick |
| TRANSMISSION SPECS | |
| Lubrication | Autolube |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Steel tubular, twin down-tubes and twin top-tubes |
| Front Suspension | Telescopic forks |
| Rear Suspension | Dual shocks |
| Front Brakes | Drum |
| Rear Brakes | Drum |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | — |
| Wheelbase | 1400 mm / 55.1 in |
| Ground Clearance | 255 mm / 10.0 in |
| Dry Weight | — |
| Wet Weight | 117 kg / 258 lb |
| WHEEL SPECS | |
| Front Tyre | 3.25-19 |
| Rear Tyre | 4.00-19 |
| FUEL SYSTEM | |
| Fuel Capacity | 9 Litres / 2.3 US gal |
| Fuel Consumption | — |
| Top Speed | 78 mph / 125 km/h |
The RT-1 was Yamaha's big single-cylinder trail and enduro machine, effectively a bigger-engined sibling of the 250 DT-1. Period testers rated it for road use, scrambles, trials and long-distance enduros, praising its handling off-road and braking but criticising the small tank and short front mudguard.
