Suzuki GSX-R 750 (1995) vs BMW R 67/2 (1952-54) vs Yamaha RD 250 (1978) vs Aprilia RSV-4 APRC / ABS (2012) vs Kawasaki Z 400LTD (1981)
Comparison technical specifications
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| Make: | Suzuki | BMW | Yamaha | Aprilia | Kawasaki |
| Model: | GSX-R 750 | R 67/2 | RD 250 | RSV-4 APRC / ABS | Z 400LTD |
| Years: | 1995 | 1952-54 | 1978 | 2012 | 1981 |
| Engine: | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. | Two stroke, torque induction, parallel twin | Four stroke, longitudinal 65° V four , DOHC, 4 valves per cylinder | Four stroke, parallel twin cylinder, SOHC, 2 Valve per cylinder. |
| Capacity: | 749 c / 45.7 cub. in. | 594 cc / 36.2 cu in | 247 cc / 15.0 cu-in | 999.1 cc / 61.0 cu-in | 398 cc / 24.2 cu-in |
| Bore x Stroke: | 70 x 48.7 mm | 72 x 73 mm | 54 х 54 mm | 78 x 52.3 mm | 64 х 62 mm |
| Compression Ratio: | 11.8:1 | 6.2:1 | 6.7:1 | 13.0:1 | 9.4:1 |
| Cooling System: | Liquid cooled | Air cooled | Air cooled | Liquid cooled | Air cooled |
| Induction: | 4 x TRM40 carburetors | 2 x Bing 1/24/15 - 1/24/16 or 1/24/25 - 1/24/26 carburetors | 2x Mikuni VM28 SC carburetor | Airbox with front dynamic air intakes. Variable length intake ducts controlled via ECU. 4 Weber-Marelli 48-mm throttle bodies with 8 injectors and latest generation Ride-by-Wire engine management. Choice of three different engine maps selectable by the rider with bike in motion: T (Track), S (Sport), R (Road) Magneti Marelli digital electronic ignition system integrated in engine control system, with one spark plug per cylinder and "stick-coil"-type coils | 2x Keihin CV32 6caburetor |
| Ignition: | Computer controlled electronic ignition | Magneto ignition | Battery and coil with breaker points | Electronic digital ignition integrated in the fuel management system. | CDI |
| Starting: | Electric | Kick | Kick | Electric | Electric & kick |
| Max Power: | 83.5 kW / 112 hp @ 10500 rpm | 20.9 kW / 28 hp @ 5600 rpm | 30 hp / 22.3 kW @ 7500 rpm | 132 kW / 180 hp @ 12500 rpm | 36 hp / 26.8 kW @ 8500 rpm |
| Transmission: | 6 Speed, constant mesh | 4 Speed | 6 Speed | 6 Speed | 5 Speed |
| Final Drive: | #530 Chain, O-ring sealed, 108 links | Shaft | Chain | Chain | Chain |
| Front Suspension: | Showa 43 mm cartridge style upside-down forks, preload, compression and rebound adjustable | Telescopic front fork with hydraulic damping; plunger type | Telescopic forks | Upside-down Sachs fork with Ø43 mm stanchions. Aluminium radial caliper mounts. Completely adjustable spring preload and hydraulic compression and rebound damping. | Telescopic forks |
| Rear Suspension: | Full floater, preload, compression and rebound adjustable | Spring with coil compression springs and rubber deflection stops | Dual shocks | Double braced aluminium swingarm; mixed low thickness and sheet casting technology. Sachs piggy back monoshock with completely adjustable: spring preload, wheelbase, hydraulic compression and rebound damping. APS progressive linkage. | Dual shocks |
| Front Brakes: | 2 x 310 mm Discs, 6 piston Nissin calipers | ∅200mm Drum duplex full hub | Single 267mm disc | 2 x Ø320 mm diameter floating stainless steel disc with lightweight stainless steel rotor and aluminium flange with 6 pins. Brembo monobloc radial calipers with 4 x Ø34 mm opposite. Sintered pads. Radial pump and metal braided brake hose | Single disc |
| Rear Brakes: | Single 280 mm disc, 2 piston Nissin caliper | ∅200mm Drum simplex full hub | Single 267mm disc | Single Ø220 mm diameter disc, Brembo floating caliper with two Ø32 mm isolated pistons. Pump with integrated tank and metal braided hose | Drum |
| Front Tyre: | 120/70 ZR17 | 3.50 -19" | 3.00S-18-4PR | 120/70 ZR17 | 3.25-18 |
| Rear Tyre: | 180/55 ZR17 | 3.50 -19" | 3.50S-18-4PR | 200/55 ZR 17 (alternative: 190/50 ZR 17; 190/55 ZR17) | 130/90-16 |
| Fuel Capacity: | 21 Litres / 5.5 US gal / 4.6 Imp gal | 17 liters / 4.4 US gal | 16.5 Liters / 4.2 US gal | 17 Liters / 4.4 US gal | 12 Litres / 3.1 US gal |