Yamaha XS 400 (1977-78) vs Yamaha XS 250 (1977-81) vs Honda CG 125 (1998-00) vs Yamaha YZF 750R (1993)
Comparison technical specifications
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| Make: | Yamaha | Yamaha | Honda | Yamaha |
| Model: | XS 400 | XS 250 | CG 125 | YZF 750R |
| Years: | 1977-78 | 1977-81 | 1998-00 | 1993 |
| 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 | Four stroke, transverse four cylinder, DOHC, 5 valves per cylinder. |
| Capacity: | 392 cc / 23.9 cu-in | 248 cc / 15.2 cu-in | 124 cc / 7.6 cu-in | 749 cc / 45.7 cu-in |
| Bore x Stroke: | 69.0 x 52.4 mm | 55 х 52.4 mm | 56.5 x 49.5mm | 72 x 46 mm |
| Cooling System: | Air cooled | Air cooled | Air-cooled | Liquid cooled |
| Compression Ratio: | 9.2:1 | 9.6:1 | 9.5:1 | 11.5:1 |
| Induction: | 2x Mikuni BS32 carburetors | 2x 32mm Mikuni carburators | 22mm Mikuni carburetor | 4x Mikuni BDST38 carbs |
| Ignition: | Battery ignition - With contact breaker points | Coil and cb | CDI | T.C.I. Digital / electric |
| Starting: | Electric & kick | Kick | Kick | Electric |
| Max Power: | 36 hp / 26.8 kW @ 8100 rpm | 27 hp / 20.1 kW @ 9500 rpm | 8.1kW / 10.8 hp @ 9000 rpm | 125 hp / 91.1 kW @ 12000 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 | 80.4 Nm / 8.2 kgf-m / 59.3 lb-ft @ 9500 rpm |
| Transmission: | 6 Speed | 6 Speed | 5 Speed | 6 Speed |
| Final Drive: | Chain | Chain | Chain | Chain |
| Front Suspension: | Telescopic fork | Telescopic forks | 27mm telescopic fork, 115mm wheel travel | 41mm USD forks adjustable preload rebound and compression |
| 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 | Monocross adjustable preload rebound |
| Front Brakes: | Single disc | Single 267mm disc | 110mm Drum | 2x 320mm discs 6 piston calipers |
| Rear Brakes: | Drum | 178mm Drum | 110mm Drum | Single 245mm disc 2 piston caliper |
| Front Tyre: | 3.00-18 | 3.00-18 | 2.75–18 | 120/70 ZR17 |
| Rear Tyre: | 3.50-18 | 3.50-18 | 90/90–18 | 180/55 ZR17 |
| Fuel Capacity: | 14 Litres / 3.7 US gal | 14 Litres / 3.7 US gal | 13.5 Litres / 3.5 US gal | 19 Litres / 4.3 gal |