BMW F 800GS (2016) vs BMW R 4 (1932-37)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | F 800GS | R 4 |
| Years: | 2016 | 1932-37 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, single cylinder vertical |
| Capacity: | 798 cc / 47.7 cub. in. | 498 cc / 30.4 cu in. |
| Bore x Stroke: | 82 x 75.8 mm | 84 x 78 mm |
| Compression Ratio: | 12.0:1 | 5.7:1 |
| Induction: | Electronic intake injection, ∅45mm throttle bodies | 1 x carburetor type SUM CK 3/500 Fr |
| Ignition: | Knock control and oxygen sensors. | Battery ignition |
| Starting: | Electric | Kick |
| Max Power: | 62.5 kW / 85 hp @ 7500 rpm | 10.4 kW / 14hp @ 4000 rpm |
| Clutch: | Multiplate-plate in oil bath | Single plate, dry |
| Transmission: | 6 Speed | 4 Speed |
| Final Drive: | Chain | Shaft |
| Gear Ratio: | 1st 2.46 / 2nd 1.75 / 3rd 1.38 / 4th 1.17 / 5th 1.04 / 6th 0.96 | 1st 3.6 / 2nd 2.28 / 3rd 1.70 / 4th 1.30:1 |
| Frame: | Tubular frame in steal partly carrying the engine | Pressed steel duplex frame |
| Front Suspension: | 43mm Marzocchi. Upside down forks | Plate spring, 9 laminae with 2 friction shock absorbers |
| Rear Suspension: | Double strut swing arm aluminium coast in one piece | Rigid, sping loaded saddle |
| Rear Brakes: | Single ∅265mm disc, 2 piston caliper, ABS | ∅160mm Drum |
| Front Tyre: | 90/90 - 21 54V | 3.50 x 26" SS |
| Rear Tyre: | 150/70 - 17 69V | 3.50 x 26" SS |
| Wet Weight: | 207 kg / 456 lbs | 137 kg / 302 lbs |
| Fuel Capacity: | 16 Litres / 4.2 US gal. | 12 L / 3.2 US gal |