Yamaha TT-R 250 (1995-96) vs Yamaha RD 125 (1974-75)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | TT-R 250 | RD 125 |
| Years: | 1995-96 | 1974-75 |
| Engine: | Four stroke, single cylinder, DOHC, 4-valve per cylinder. | Two stroke, parallel twin |
| Capacity: | 249 cc / 15.1 cu-in | 124 cc / 7.6 cu-in |
| Cooling System: | Air-cooled | Air cooled |
| Bore x Stroke: | 73 x 59.6 mm | 43 х 43 mm |
| Compression Ratio: | 10.3:1 | 6.8:1 |
| Induction: | TEIKEI Y30P carb | 2x 18mm Teikei carburetors |
| Ignition: | Digital CDI | Battery coil |
| Starting: | Electric | Kick |
| Max Power: | 28 hp / 20.6 kW @ 8500 rpm | 17 hp / 12.4 kW @ 8500 rpm |
| Max Torque: | 2.8 kgf-m / 27.1 Nm / 20.0 lb-ft @ 7000 rpm | 1.3 kgf-m @ 8000 rpm |
| Transmission: | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain |
| Front Suspension: | Telescopic forks, Coil air spring oil damper | 28 mm telescopic forks |
| Rear Suspension: | Monocross, Single shock, link-type, w/adjustable preload | Dual rear shock pre-load adjustable |
| Front Brakes: | Single 245mm disc | 150 mm Drum |
| Rear Brakes: | Single 220mm disc | 130 mm Drum |
| Front Tyre: | 3.00-21 | 2.75-18 |
| Rear Tyre: | 4.60-18 | 3.00-18 |
| Wheelbase: | 1405 mm / 55.3 in | 1245 mm / 49.0 in |
| Seat height: | 914 mm / 36.0 in | 749 mm / 29.5 in |
| Fuel Capacity: | 10.2 Litres / 2.7 US gal | 11.5 Litres / 3.04 US gal |