BMW R 65GS (1987) vs BMW R 80GS (1987)
Comparison technical specifications
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| Make: | BMW | BMW |
| Model: | R 65GS | R 80GS |
| Years: | 1987 | 1987 |
| Engine: | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder. | Four stroke, two cylinder horizontally opposed Boxer, pushrod operated 2 valves per cylinder |
| Capacity: | 649.6 cc / 39.6 cu in. | 797.5 cc / 48.7 cu in. |
| Bore x Stroke: | 82 x 61.5 mm | 84.8 x 70.6 mm |
| Compression Ratio: | 8.4:1 | 8.2:1 |
| Cooling System: | Air cooled | Air cooled |
| Induction: | 2 x Bing constant depression carburetors | 2 x Bing constant depression carburetors |
| Ignition: | Bosch electronic | Battery ignition |
| Max Power: | 33 kW / 45 hp 33 kW @ 7250 rpm | 37 kW / 50 hp @ 6500 rpm |
| Max Torque: | 45.1 Nm / 4.6 kgf-m 33.3 lb-ft. @ 6000 rpm | 61 Nm / 6.2 kgf-m / 44 ft lb @ 5000 rpm |
| Transmission: | 5 Speed | 5 Speed |
| Final Drive: | Shaft | Shaft |
| Front Suspension: | Telescopic hydraulic forks | ∅40mm Marzocchi telescopic hydraulic forks. |
| Rear Suspension: | Monolever - swinging arm | BMW Paralever swinging arm |
| Front Brakes: | Single ∅260mm disc | Single ∅285mm disc |
| Rear Brakes: | Simple ∅200mm drum | ∅200mm Drum |
| Front Tyre: | 3.00-21" | 90/90 x 21S |
| Rear Tyre: | 4.00-18" | 13/80 x 17S |
| Wet-Weight: | 198 kg / 437 lbs | 210 kg / 462 lbs |
| Fuel Capacity: | 19.5 L / 5.2 US gal | 24 L / 6.3 US gal |