| YAMAHA XJ 900 | BMW R 12 |
|---|
| engine specs | |
| Type | |
|---|---|
| Air Cooled, Four Stroke, Transverse Four Cylinder, DOHC | Water-cooled, 2-cylinder, four-stroke boxer engine with four valves per cylinder operated by cam followers and two overhead camshafts per cylinder |
| Displacement | |
| 891 cm3 | 1170 cm3 |
| Bore X Stroke | |
| 2.6x2.4 in OR 66 mm | 4.0x2.9 in OR 102 mm |
| Compression Ratio | |
| 9.2:1 | - |
| Horsepower | |
| 97/9000 KW(hp)/RPM | 95/6500 KW(hp)/RPM |
| Torque | |
| 59.7/7000 lb-ft/RPM OR 81/7000 Nm/RPM | 81/6000 lb-ft/RPM OR 110/6000 Nm/RPM |
| Fuel System | |
| 4xMikuni Carburetors | - |
| transmission specs | |
| Gearbox | |
|---|---|
| 5-Speed | 6-speed |
| Clutch | |
| Wet multi-discs | - |
| Final Drive | |
| Shaft | Shaft |
| chassis specs | |
| Frame | |
|---|---|
| - | Tubular space frame in steel, engine self-supporting |
| Front Suspension | |
| Air Assisted Telescopic Forks | USD telescopic forks, 45 mm |
| Rear Suspension | |
| Twin Strut Gas Assisted, 5 Spring Preload And 12 Damping Adjustable | Aluminium Paralever swinging arm, directly linked WAD spring strut, spring base and rebound damping adjustable |
| Front Brake | |
| 2x254mm Discs With 2-piston Calipers | Twin disc brake, floating brake discs, 310 mm, 4-piston monobloc fixed calipers |
| Rear Brake | |
| Single 254mm Disc With 2-piston Calipers | Single disc brake, 265 mm, 2-piston floating caliper |
| dimension specs | |
| Overall Length | |
|---|---|
| 87.2 in OR 2215 mm | 86.6 in OR 2200 mm |
| Overall Width | |
| 28.9 in OR 734 mm | 32.7 in OR 831 mm |
| Seat Height | |
| 30.7 in OR 780 mm | 29.7 in OR 754 mm |
| Weelbase | |
| 58.3 in OR 1481 mm | - |
| Ground Clearance | |
| 5.7 in OR 145 mm | - |
| Weight | |
| 533 lbs OR 242 kg | 500 lbs OR 227 kg |
| Fuel Capacity | |
| 5.8 gallons OR 22.0 L | 3.7 gallons OR 14.0 L |
| Wheelbase | |
| 58.3 in OR 1481 mm | 59.8 in OR 1519 mm |
| tyres specs | |
| Front | |
|---|---|
| 100/90-18 | 100/90-19 |
| Rear | |
| 120/90-18 | 150/80-16 |
