Triumph Bonneville - 2008 Specifications and Reviews

The 2008 Triumph Bonneville is a classic air-cooled twin that appeals to riders seeking retro styling with modern reliability. Known for its distinctive British character and manageable 66 horsepower, this 865cc motorcycle excels as an accessible middleweight for enthusiasts valuing heritage and everyday practicality over raw performance.

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General information

CategoryClassic
Year2008
ModelTriumph Bonneville

Engine and Transmission Specifications

ClutchWet. multi-plate
Transmission typefinal driveChain
Gearbox5-speed
Cooling systemAir
StarterElectric
IgnitionDigital - inductive type
Fuel controlDOHC
Fuel systemCarburettor. Multipoint sequential electronic fuel injection
Bore x stroke90.0 x 68.0 mm (3.5 x 2.7 inches)
Compression9.2:1
Torque52.00
Power66.00
Stroke4
Engine typeTwin
Capacity:865.00 ccm (52.78 cubic inches)

Physical measures and capacities

Wheelbase1,501 mm (59.1 inches)
Overall width841 mm (33.1 inches)
Overall length2,230 mm (87.8 inches)
Overall height1,100 mm (43.3 inches)
Seat height775 mm (30.5 inches) If adjustable, lowest setting.
Dry weight204.6 kg (451.0 pounds)
 
 

Triumph Bonneville dimensions and frame

Rear brakes diameter255 mm (10.0 inches)
Rear brakesSingle disc
Front brakes diameter310 mm (12.2 inches)
Front brakesSingle disc
Rear tyre dimensions130/80-17
Front tyre dimensions100/90-19
Rear suspensionChromed spring twin shocks with adjustable preload
Front suspension41mm forks
Trail110 mm (4.3 inches)
Rake (fork angle)28.0°
Frame typeTubular steel cradle
 
 

Speed and acceleration

Power/weight ratio0.3226 HP/kg

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsAluminium Silver. Fusion White. Claret
Fuel capacity16.65 litres (4.40 gallons)

Performance Profile & Rider Fit

68 hp
Peak Power
5.8s
0-60 mph

Best For

Track20%
City65%
Cornering55%
Daily Riding68%
Touring45%
Passenger40%

Rider Profile

Best ForSuits new-to-intermediate riders thanks to modest power delivery and forgiving, predictable handling.
PurposeBest suited to relaxed street riding, café-racer style cruising, and short scenic rides rather than outright performance.
Rider FitA moderate curb weight and low, accessible seat height make it manageable for riders of average build and shorter inseams.
CharacterA classic-styled retro roadster that prioritizes timeless looks, mellow torque, and easygoing manners over speed or sharpness.
Not Ideal ForNot a good fit for riders wanting high-speed touring, aggressive cornering performance, or any off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

Calculated in your browser only - your height/inseam are never sent to our servers.

Feet:

At 775mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2008 Triumph Bonneville, with a relaxed knee angle of around 120 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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