BMW F 900R Force (2021) vs Yamaha XJ 750R (1981-82)
Comparison technical specifications
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| Make: | BMW | Yamaha |
| Model: | F 900R Force | XJ 750R |
| Years: | 2021 | 1981-82 |
| Engine: | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder | Four stroke, transverse four cylinder, DOHC, 2 valves per cylinder. |
| Capacity: | 895 cc / 54.6 cu-in | 749 cc / 45.6 cu-in |
| Bore x Stroke: | 86 x 77 mm | 65 х 56.5 mm |
| Compression Ratio: | 13.1:1 | 9.5:1 |
| Cooling System: | Liquid cooled | Air cooled |
| Induction: | Electronic injection | 4X 32mm Hitachi CV |
| Ignition: | Electronic | Transistorized |
| Starting: | Electric | Electric |
| Transmission: | Constant mesh 6-speed gearbox integrated in crankcase | 5 Speed |
| Final Drive: | Endless O-ring chain with shock damping in rear wheel hub | Chain |
| Front Suspension: | 43mm Upside-down telescopic fork | Telescopic fork, 150mm wheel travel. |
| Rear Suspension: | Cast aluminium dual swing arm, central spring strut, spring pre-load hydraulically adjustable, rebound damping adjustable | Swing arm, twin shocks 96mm wheel travel. |
| Front Brakes: | 2X 320mm floating discs, 4-piston radial brake calipers | 2x 294mm disc 2 piston calipers |
| Rear Brakes: | Single 265mm discs, single-piston floating caliper | Drum |
| Front Tyre: | 120/70 ZR 17 | 100/90-18 |
| Rear Tyre: | 180/55 ZR 17 | 120/90-18 |
| Seat Height: | 815 mm / 32.0 in (OE suspension lowering kit: 770 mm, OE low seat: 790 mm, OA high seat: 835 mm, OA comfort seat: 840 mm, OE extra high seat: 865 mm) | 775 mm / 30.5 in |
| Fuel Capacity: | 13 Litres / 3.4 US gal | 19 Litres / 5.0 US gal |