| MODEL | BUELL XBRR 2007 |
| Year | 2007 |
| Engine Type | 45° V-Twin, four stroke, pushrod OHV, hydraulic self-adjusting lifters, 2 valves per cylinder |
| Displacement / Capacity | 1339 cc / 81.7 cu in |
| Bore X Stroke | 103.6 x 79.4 mm |
| Compression Ratio | 12.5:1 |
| Cooling System | Air cooled |
| Max Power | 111.9+ kW / 150+ hp @ 8000 rpm |
| Max Torque | 135 Nm / 13.8 kgf-m / 100 ft-lb @ 6500 rpm |
| Ignition | — |
| Induction | 2 x 62 mm down-draft fuel injection throttle bodies |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | — |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | — |
| Front Suspension | 43 mm inverted Ohlins fork, adjustable |
| Rear Suspension | Ohlins fully adjustable coil-over monoshock with remote reservoir |
| Front Brakes | ZTL2 reversed rotor, eight-piston Nissin caliper |
| Rear Brakes | Single 240 mm disc, 1-piston floating caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 775 mm / 30.5 in |
| Wheelbase | 1341 mm / 52.8 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 120/70 R17 |
| Rear Tyre | 190/55 R17 |
| FUEL SYSTEM | |
| Fuel Capacity | — |
| Fuel Consumption | — |
| Top Speed | — |
The XBRR was a race-only machine, built in a tiny run for factory-supported and privateer teams. It stretched the air-cooled Sportster-derived twin to 1339 cc and about 150 hp, and carried Ohlins suspension, magnesium wheels and the first eight-piston ZTL2 front brake. Chain drive replaced the usual belt.
