2004 BMW R1150 R ROCKSTER, Engine and transmissionEngine size;1130.0 ccm (68.95 cubic inches)Type of engine;Two cylinder boxer, four-strokeEffect;83.8 HP (61.2 kW)) @ 6750 RPMTorque;98.0 Nm (10.0 kgf-m or 72.3 ft.lbs) @ 5250 RPMCompression;10.3:1Bore x stroke;101.0 x 70.5 mm (4.0 x 2.8 inches)Valves per cylinder;4Fuel system;InjectionFuel control;Overhead Cams (OHC)Cooling system;Oil & airGearbox;6-speedTransmission type;Shaft drive (cardan) (final drive)Chassis, suspension, brakes and wheelsFrame type;Three-section composite frame consisting of front and rear section, load bearing engine.Front suspension;BMW Motorrad Telelever; stanchion diameter 35 mm, central strut, rebound damping adjustableFront wheel travel;120 mm (4.7 inches)Rear suspension;Die-cast aluminium single-sided swinging arm with BMW Motorrad Paralever; central strut, spring pre-load adjustable to continuously variable levels by means of hydraulic handwheel, rebound damping adjustableRear wheel travel;135 mm (5.3 inches)Front tire;120/70-ZR17Rear tire;180/55-ZR17Front brakes;Double discDiameter;320 mm (12.6 inches)Rear brakes;Single discDiameter;276 mm (10.9 inches)Physical measures and capacitiesDry weight;219.0 kg (482.8 pounds)Weight incl. oil, gas, etc;239.0 kg (526.9 pounds)Power/weight ratio;0.3827 HP/kgSeat height;835 mm (32.9 inches) If adjustable, lowest setting.Alternate seat height;845 mm (33.3 inches) If adjustable, highest setting.Overall height;1097 mm (43.2 inches)Overall length;2170 mm (85.4 inches)Overall width;920 mm (36.2 inches)Wheelbase;1486 mm (58.5 inches)Fuel capacity;20.50 litres (5.42 US gallons)Reserve fuel capacity;4.00 litres (1.06 US gallons)