BMW R 37 (1925-27) vs MV Agusta F4 750S EVO 3 (2003) vs Yamaha FZR 400RR (1991-95) vs Yamaha RS 100 (1978-79)
Comparison technical specifications
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| Make: | BMW | MV Agusta | Yamaha | Yamaha |
| Model: | R 37 | F4 750S EVO 3 | FZR 400RR | RS 100 |
| Years: | 1925-27 | 2003 | 1991-95 | 1978-79 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated, OHV | Four stroke, transverse four cylinder. DOHC, 4 valves per cylinder. | Four stroke, transverse four cylinder, DOHC, 4 valves per cylinder. | Two stoke, torque induction, single |
| Capacity: | 494 cc / 30.1 cu in. | 749.4 cc / 45.7 cu-in | 399 cc / 24.3 cu-in | 97 cc / 5.9 cu-in |
| Bore x Stroke: | 68 x 68 mm | 73.8 x 43.8 mm | 56 x 40.5 mm | 52 x 45.6 mm |
| Compression Ratio: | 6.2:1 | 12.0:1 | 12.2:1 | 7.0 : 1 |
| Cooling System: | Air cooled | Liquid cooled | Liquid cooled | Air cooled |
| Induction: | 1 x BMW Spezial three valve ∅26 mm | Fuel Injection | Carburetor | VM20SH carburetor |
| Ignition: | Bosch magneto ignition | Multipoint electronic | Analogue CDI (Capacitive Discharge Ign.) | Magneto, CB/coil |
| Max Power: | 11.9 kW / 16 hp @ 4000 rpm | 137 hp / 99.9 kW @ 12600 rpm | 66 hp / 48.6 kW @ 12500 rpm | 11 hp / 8.1 kW @ 8500rpm |
| Front Suspension: | Twin cantilever spring | Upside-down telescopic hydraulic fork with rebound-compression damping and spring preload adjustment 49mm diameter | 41mm Telescopic forks | Telescopic forks |
| Rear Suspension: | Rigid, spring loaded saddle | Progressive, with single sided swingarm, single shock absorber with rebound-compression damping and spring preload adjustment | Monoshock single shock preload adjustable. | Dual shocks |
| Front Brakes: | ∅150mm Drum | 2x 310mm discs 6 piston calipers | 2x 298mm discs 2 piston calipers | Drum |
| Rear Brakes: | Block brake | Single 210mm disc 4 piston caliper | Single 210mm disc 2 piston caliper- | Drum |
| Front Tyre: | 26 x 3.00" | 120/65 ZR17 | 120/60 VR17 | 2.75-18 |
| Rear Tyre: | 26 x 3.00" | 190/50 ZR17 | 160/60 VR17 | 3.00-18 |
| Fuel Capacity: | 14 liters / 3.6 USgal | 21 Litres / 5.8 US gal | 15 Litres / 3.9 gal | 10 Litres / 2.6 US gal |