Yamaha IT 175 (1983) vs Yamaha WR 250R (2014) vs Honda CBR 400F (1984)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Honda |
| Model: | IT 175 | WR 250R | CBR 400F |
| Years: | 1983 | 2014 | 1984 |
| Engine: | Two stroke, single cylinder, reed-valve inducted | Four stroke, single cylinder, DOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 4 valve per cylinder. |
| Capacity: | 171 cc / 10.4 cu-in | 249 cc / 15.2 cub in. | 399 cc / 24.3 cu-in |
| Bore x Stroke: | 66 x 50mm | 77 x 53.6 mm | 55 x 42 mm |
| Cooling System: | Air cooled | Liquid cooled | Air cooled |
| Compression Ratio: | 7.9:1 | 11.8:1 | 9.6:1 |
| Induction: | 32mm Mikuni carburetor | Electronic fuel injection | VE53 carburetor |
| Ignition: | CDI | TCI | CDI |
| Starting: | Kick | Electric | Electric |
| Max Power: | 19.86 hp / 14.6 kW @ 8000 rpm | 22.6 kW / 30.7 hp @ 10,000 rpm | 58 hp / 43.2 kW @ 12300 rpm |
| Max Torque: | 18.47 Nm / 13.63 lb-ft @ 7500 rpm | 23.7 Nm / 2.42 kgf-m / 17.48 @ 8000 rpm | 3.6 kgf-m / 26.0 lb-ft @ 11000 rpm |
| Transmission: | 6 Speed | 6 Speed, constant mesh | 6 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | Telescopic forks | Telescopic forks |
| Rear Suspension: | Monoshock with adjustable damping and pre-load | Swingarm link suspension | Swinging arm |
| Front Brakes: | Drum | Single 250mm disc | 2x discs |
| Rear Brakes: | Drum | Single 230mm disc | Single disc |
| Front Tyre: | 3.00 x 21 | 80/100 -21 | 100/90 -16 |
| Rear Tyre: | 4.10 x 18 | 120/80 -18 | 100/90 -18 |
| Seat Height: | 899 mm / 35.4 in | 930 mm / 36.6 in. | 790 mm / 31.1 in |
| Fuel Capacity: | 11 Litres / 2.9 US gal | 7.6 Litres | 18 Litres / 4.7 US gal |