Yamaha XS 400 (1977-78) vs Yamaha XS 250 (1977-81) vs Honda CG 125 (1998-00)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Honda |
| Model: | XS 400 | XS 250 | CG 125 |
| Years: | 1977-78 | 1977-81 | 1998-00 |
| Engine: | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder | Four stroke, 180° parallel twin, SOHC, 2 valves per cylinder | Four stroke, single cylinder, OHV |
| Capacity: | 392 cc / 23.9 cu-in | 248 cc / 15.2 cu-in | 124 cc / 7.6 cu-in |
| Bore x Stroke: | 69.0 x 52.4 mm | 55 х 52.4 mm | 56.5 x 49.5mm |
| Cooling System: | Air cooled | Air cooled | Air-cooled |
| Compression Ratio: | 9.2:1 | 9.6:1 | 9.5:1 |
| Induction: | 2x Mikuni BS32 carburetors | 2x 32mm Mikuni carburators | 22mm Mikuni carburetor |
| Ignition: | Battery ignition - With contact breaker points | Coil and cb | CDI |
| Starting: | Electric & kick | Kick | Kick |
| Max Power: | 36 hp / 26.8 kW @ 8100 rpm | 27 hp / 20.1 kW @ 9500 rpm | 8.1kW / 10.8 hp @ 9000 rpm |
| Max Torque: | 3.3 kgf-m / 23.8 lb-ft @ 8000 rpm | 2.2 kgf-m / 15.9 lb-ft @ 8500 rpm | 9.8 Nm / 7.2 lb-ft @ 7000 rpm |
| Transmission: | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | Chain | Chain | Chain |
| Front Suspension: | Telescopic fork | Telescopic forks | 27mm telescopic fork, 115mm wheel travel |
| Rear Suspension: | Dual shocks swing arm, preload adjustable | Dual shocks, swing arm, 5-position preload adjustable | Dual dampers with 5-step adjustable spring preload, 80mm wheel travel |
| Front Brakes: | Single disc | Single 267mm disc | 110mm Drum |
| Rear Brakes: | Drum | 178mm Drum | 110mm Drum |
| Front Tyre: | 3.00-18 | 3.00-18 | 2.75–18 |
| Rear Tyre: | 3.50-18 | 3.50-18 | 90/90–18 |
| Fuel Capacity: | 14 Litres / 3.7 US gal | 14 Litres / 3.7 US gal | 13.5 Litres / 3.5 US gal |