Yamaha XS 1100E (1978) vs Yamaha GX 400 (1978-79) vs Yamaha DT 175 (1978) vs Yamaha DT 125E (1978-79) vs Yamaha GX 250SP (1978)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Yamaha | Yamaha | Yamaha |
| Model: | XS 1100E | GX 400 | DT 175 | DT 125E | GX 250SP |
| Years: | 1978 | 1978-79 | 1978 | 1978-79 | 1978 |
| Engine: | Four stroke transverse four cylinder, DOHC, 2 valves per cylinder. | Four stroke, parallel twin | Two stroke, single cylinder, reed valve | Two stroke, single cylinder, reed-valve | Four stroke parallel twin-cylinder OHC 2 valve per cylinder |
| Capacity: | 1101 cc / 67.2 cu-in | 391 | 171 cc / 10.43 cu-in | 123 cc / 7.5 cu-in | 248 |
| Bore x Stroke: | 71.5 x 68.6 mm | 69 х 52.4 mm | 66 x 50 mm | 56 х 50 mm | 55 х 52.4 mm |
| Cooling System: | Air cooled | Air cooled | Air cooled | Air cooled | Air-cooled |
| Compression Ratio: | 9.2:1 | 9.2:1 | 6.8;1 | 7.1:1 | 9.6:1 |
| Induction: | 4x Mikuni BS 34SS Carburettor | Carburetor | Mikuni VM24SS 24mm slide type carburettor | Single 24 mm Mikuni | Carburetor |
| Starting: | Electric | Kick | Kick | Electric & kick | Kick |
| Max Power: | 95 hp / 70.8 kW @ 8500 rpm | 37 hp @ 8800 rpm | 16.5 hp / 12.3 kW @ 7000 rpm | 13 hp / 9.5 kW @ 7000 rpm | 25 hp @ 9500 rpm |
| Max Torque: | 9.2 kgf-m / 66.5 lb-ft @ 6500 rpm | 3.2 @ 8000 rpm | 8.8 Nm / 12 lb- ft @ 6000rpm. | 1.4 kgf-m / 13.9 Nm @ 6500 rpm | 1.9 k-m @ 8500 rpm |
| Transmission: | 5 Speed | 6 Speed | 5 Speed | 6 Speed | 6 Speed |
| Final Drive: | Shaft | Chain | Chain, DID428SM. 117 links. | Chain | Chain |
| Front Suspension: | Telescopic fork. | Telescopic forks | Telescopic, oil damped. | Telescopic forks | Telescopic forks |
| Rear Suspension: | Dual shocks Swing arm, preload adjustable | Dual shocks | Dual shocks | Monocross | Dual shocks |
| Front Brakes: | 2x 298mm discs | Single disc | Drum | Drum | Single disc |
| Rear Brakes: | Single 298mm disc | Single disc | Drum | Drum | Single disc |
| Front Tyre: | 3.50-19 | 3.00-18 | 2.75 -21 | 2.75-21 | 3.00-18 |
| Rear Tyre: | 4.50-17 | 3.50-18 | 3.50 -18 | 3.25-18 | 3.25-18 |
| Fuel Capacity: | 22 Litres / 5.8 gal | 7 Litres / 1.5gal | 7.0 Litres / 1.58 gal |