Buell / EBR Buell XB12R Firebolt (2004) vs BMW F 900XR (2025)
Comparison technical specifications
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| Make: | Buell / EBR | BMW |
| Model: | Buell XB12R Firebolt | F 900XR |
| Years: | 2004 | 2025 |
| Engine: | 45° V-Twin, four stroke, pushrod actuated overhead valve. hydraulic self-adjusting lifters, 2 valve per cylinder. | Four stroke, parallel twin cylinder, DOHC, 4 valves per cylinder |
| Capacity: | 1203 cc / 73 cu in | 895 cc / 54.6 cu-in |
| Bore x Stroke: | 88.9 x 96.8 mm | 86 x 77 mm |
| Compression Ratio: | 10.0:1 | 13.1:1 |
| Cooling System: | Air cooled | Liquid cooled |
| Induction: | Ø49 mm downdraft DDFI II fuel injection | Electronic intake pipe injection / digital engine management system: BMS-X with throttle-by-wire |
| Starting: | Electric | Electric |
| Max Power: | 86.9 kW / 103 hp @ 6800 rpm | 78 kW / 105 hp @ 8500 rpm |
| Max Torque: | 114 Nm / 11.6 kgf-m / 84 ft-lbs @ 6000 rpm | 93 Nm / 68.6 lb-ft @ 6750 rpm |
| Transmission: | 5 Speed | Constant mesh 6-speed gearbox integrated in crankcase |
| Final Drive: | Belt | Endless O-ring chain with shock damping in rear wheel hub |
| Frame: | Aluminium frame with Uniplanar™ Powertrain vibration isolation system | Bridge-type frame, steel shell construction, load bearing engine |
| Rake: | 21° | 28? |
| Trail: | 83 mm / 3.3" | 119.4 mm / 4.1 in |
| Front Suspension: | Showa inverted forks compression damping, rebound damping and spring preload adjustable | 43mm inverted fork with adjustable damping rebound and compression damping as well as adjustable spring preload. |
| Front Wheel Travel: | 120 mm / 4.7" | 170 mm / 6.7 in |
| Rear Suspension: | Showa coil-over monoshock, remote underseat reservoir and adjustable compression damping, rebound damping and spring preload, 127mm wheel travel | Aluminum double-sided swing arm, directly linked central spring strut, hydraulically adjustable spring preload, adjustable rebound damping (Optional equipment: Dynamic ESA) |
| Rear Wheel Travel: | 127 mm / 5.0" | 173 mm / 6.8 in |
| Front Brakes: | ZTL type brake, 6 piston, fixed caliper, Ø375 mm single-sided, inside out, stainless steel, floating rotor | 2 x 320mm floating discs, 4-piston radial brake calipers, hydraulically operated |
| Rear Brakes: | Single Ø240 mm disc, 1 piston floating caliper | Single 265mm discs, single-piston floating caliper, hydraulically operated |
| Front Wheel: | 3.50 x 17" | 3.50″ x 17″ |
| Rear Wheel: | 5.50 x 17" | 5.50″ x 17? |
| Front Tyre: | 120/70 ZR17 | 120/70 ZR 17 |
| Rear Tyre: | 180/55 ZR17 | 180/55 ZR 17 |
| Dimensions: | Length: 1924 mm / 75.7" Width: 768 mm / 30.2" Height: 1092 mm / 43.0" | Length 2159 mm / 85 in Width 919 mm / 36.2 in |
| Wheelbase: | 1320 mm / 52.0" | 1534 mm / 60.4 in |
| Seat Height: | 775 mm / 30.5" | 846 mm / 33.3 |
| Fuel Capacity: | 14 L / 3.7 US gal | 15.5 Litres / 4.1 US gal |