2008 Bonneville Speedmaster Specification
Engine  
Type: Air-cooled, DOHC, parallel twin, 270º firing intervall
Capacity: 865cc
Bore/Stroke: 90 x 68mm
Compression Ratio: 9.2:1
Fuel System: Twin carburettors, with throttle position sensor and electric carburettor heaters
Ignition:

Digital - inductive type
Transmission  
Primary Drive: Gear
Final Drive: X ring chain
Clutch: Wet, multi-plate
Gearbox:

5-speed
Cycle Parts  
Frame: Tubular steel cradle
Swingarm: Twin-sided, tubular steel
Wheels: Front: Spoked 18 x 2.5in
Rear: Spoked 15 x 3.5in
Tires: Front: 110/80 R18
Rear: 170/80 R15
Suspension: Front: 41mm forks
Rear: Chromed spring twin shocks with adjustable pre-load
Brakes:

Front: Twin 310mm disc, 2 piston caliper
Rear: Single 285mm disc, 2 piston caliper
Dimensions  
Length: 2420mm (95.3in)
Width (handlebars): 830mm (32.7in)
Height: 1160mm (45.7in)
Seat Height: 720mm (28.3in)
Wheelbase: 1655mm (65.2in)
Rake / Trail: 33.3º / 153mm
Weight (Dry): 229kg (504lb)
Fuel Tank Capacity:

16.6 litres (4.4 gal US)
Performance (measured at crankshaft to DIN 70020)
Maximum Power: 54bhp at 6,750 rpm
Maximum Torque:

51ft.lbf at 4,800 rpm
Colors: Pacific Blue/Aluminum Silver, Phantom Black/Tornado Red, Phantom Black,
Warranty: 2 years; unlimited mileage
Service Intervals: 6000 miles or one year, whichever comes first