BMW R90Sback 1976

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Air cooled, 898cc, Boxer, OHV

Power: 59.96 HP (44.1 kW) @ 7000 rpm
Torque: 76 Nm (56.05 lb-ft) @ 5500 rpm
Final drive: Shaft
Top speed: 124.27 mph
Curb weight: 474 lbs
Category: Touring
Tags: All-rounder, Classic bike, Touring
Engine and transmission
Engine type: 2 cylinders, 4-stroke, Boxer
Displacement: 898 cc (54.87 cubic inches)
Bore × stroke: 3.54 inch × 2.78 inch (oversquare - shortstroke)
Cooling system: Air cooled
Power: 59.96 HP (44.1 kW) @ 7000 rpm
Torque: 76 Nm (56.05 lb-ft) @ 5500 rpm
Throttle: Cable operated
Valves
Valve train: OHV, variable
Valves per cylinder: 2
Fuel and ignition
Sparks per cylinder: 1
Fuel supply system: Carburetor
Funnel diameter: 1.5 inch
Compression: 9.5:1
Engine mounting: Longitudinal
Lubrication system: Wet sump
Gear box: Manual 5-speed
Clutch: Dry, single plate, cable operated
Final drive: Shaft
Spark plug pipe type: Bosch, W 200 T30
Starter: Electric
Dimensions
Physical measures
Length: 85.8 inch
Width: 29.1 inch
Height: 47.6 inch
Wheel base: 57.7 inch
Ground clearance: 6.5 inch
Seat height: 32.3 inch
Weight
Curb weight: 474 lbs
Chassis and suspension
Frame type: steel, Double cradle frame
Front
Suspension: Cartridge
Suspension travel: 8.19 inch
Brake: Single Disk, Ø10.24 inch
Tire: 3.27 × 19
Rear
Suspension: twin shock, Swingarm
Suspension travel: 4.92 inch
Brake: Drum, Ø7.87 inch
Tire: 4.02 × 18
Other
ABS available: No
Power-to-weight ratio: 0.21 KW/lbs (4.88 lbs/HP)
Acceleration (0-60 mph): 4.8 sec
Top speed: 124.27 mph
Fuel capacity: 4.76 gals
Number of riders: 2 persons

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