Yamaha XT 400 (1981-85) vs Yamaha XJ 750E (1981-82) vs Harris Rayner Ducati () vs Yamaha YR2C (1968) vs Yamaha MT-01 (2007-08)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Harris | Yamaha | Yamaha |
| Model: | XT 400 | XJ 750E | Rayner Ducati | YR2C | MT-01 |
| Years: | 1981-85 | 1981-82 | 1968 | 2007-08 | |
| Engine: | Four stroke, single cylinder, SOHC, 4 valve | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. | Four stroke, 90°“L”twin cylinder, SOHC, desmodromic 2 valve per cylinder. | Two stroke, parallel twin | Four stroke, 48° V-Twin cylinder, SOHC, 4 valves per cylinder. |
| Capacity: | 399 cc / 24.3 cu-in | 749 cc / 45.6 cu-in | 642 | 347 cc / | 1670 cc / 101.9 cu-in |
| Bore x Stroke: | 87 х 67.2 mm | 65 х 56.4 mm | 84 x 58 mm | 61 х 59.6 mm | 97 x 113 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled | Air cooled | Air cooled |
| Compression Ratio: | 8.8:1 | 9.2:1 | 10.5:1 | 7.5:1 | 8.36:1 |
| Induction: | Caburetor | 4x 32mm Hitachi carburetors | 2x 36mm Dell'Orto PHM carbs | Carburetor | Twin-bore fuel injection (FI) |
| Ignition: | CDI | Transistorized | Bosch PTZ Electronic | Digital TCI | |
| Starting: | Kick | Electric | Electric | Kick | Electric |
| Transmission: | 5 Speed | 5 Speed | 5 Speed | 5 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic forks | 36mm Showa forks adjustable air pressure anti-dive resistance.150mm wheel travel. | Telescopic front fork. Pivoted | Inverted telescopic fork; | |
| Rear Suspension: | Mono-cross | Dual dampers adjustable for spring preload rebound damping.97.5 wheel travel. | Cantilever fork with De Carbon unit. | Swingarm with fully adjustable single shock; | |
| Front Brakes: | Drum | 2x 300mm disc 2 piston calipers | 2x 254 mm discs | Drum | 2x 320 mm discs 4 piston calipers |
| Rear Brakes: | Drum | Drum | Single 254 mm disc | Drum | Single 267 mm disc 1 piston caliper |
| Front Tyre: | 3.00-21 | 3.25-19 | 4.10 x 18 | 3.00-18 | 120/70 ZR18 |
| Rear Tyre: | 4.60-18 | 120/90-18 | 4.25 x 18 | 3.50-18 | 190/50 ZR17 |
| Fuel Capacity: | 11.4 Litres / 3.0 US gal | 19 Litres / 5.0 US gal | 16 7 Litres | 15 Litres / 4.0 gal | 15 Litres / 3.2 gal |