Yamaha WR 250F (2007-08) vs Yamaha IT 400 (1977-78)
Comparison technical specifications
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| Make: | Yamaha | Yamaha |
| Model: | WR 250F | IT 400 |
| Years: | 2007-08 | 1977-78 |
| Engine: | Four stroke, single cylinder, DOHC, 5 valve | Two stroke, single cylinder, read valve |
| Capacity: | 249 cc / 15.2 cu-in | 396 cc / 24.1 cu-in |
| Bore x Stroke: | 77 x 53.6 mm | 85 x 70 mm |
| Cooling System: | Liquid cooled, | Air cooled |
| Compression Ratio: | 12.5:1 | 7.6:1 |
| Induction: | Keihin FCR-MX37 flat-slide w/throttle position sensor) | VM38SS Mikuni carburetor |
| Ignition: | Digital CDI | CDI |
| Starting: | Electric / Kick | Kick |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | #520 Chain | Chain |
| Front Suspension: | 48mm Fully adjustable inverted forks | 43mm Telescopic adjustable forks |
| Front Wheel Travel: | 300 mm / 11.8 in | 300 mm / 11.8 in |
| Rear Suspension: | Fully adjustable link Monocross | Mono shock, adjustable spring preload and rebound damping |
| Rear Wheel Travel: | 305 mm / 12.0 in | 300 mm / 11.8 in |
| Front Brakes: | Single 250mm disc 2 piston caliper | Drum |
| Rear Brakes: | Single 240mm disc 1 piston caliper | Drum |
| Front Tyre: | 80/100-21 | 3.00 -21 |
| Rear Tyre: | 100/100-18 | 150/80 -18 |
| Rake: | 27.0° | 31.5° |
| Trail: | 115 mm / 4.5 in | 142 mm / 5.5 in |
| Wheelbase: | 1475 mm / 58.1 in | 1430 mm / 56.2 in |
| Ground Clearance: | 335 mm / 13.2 in | 240 mm / 9.4 in |
| Dry Weight: | 106 kg / 233.2 lbs | 115 kg / 253.5 lbs |
| Fuel Capacity: | 8 Liters / 2.1 gal | 13.6 Litres / 3.4 US gal |