What category is the 2018 Triumph Bonneville Bobber?

General information
Category	Classic
Model	Triumph Bonneville Bobber
Year	2018

Engine and Transmission Specifications
Exhaust system	Brushed stainless steel 2 into 2 twin-skin exhaust system with brushed stainless silencers.
Greenhouse gases	104.4 CO2 g/km. (CO2 - Carbon dioxide emission)
Fuel consumption	4.50 litres/100 km (22.2 km/l or 52.27 mpg)
Driveline	X ring chain. Primary drive: Gear.
Clutch	Wet, multi-plate assist clutch
Transmission type,final drive	Chain
Gearbox	6-speed
Cooling system	Air
Ignition	Digital-inductive type via engine management system
Fuel control	Single Overhead Cams (SOHC)
Fuel system	Injection. Multipoint sequential electronic fuel injection with SAI
Valves per cylinder	8
Bore x Stroke	97.6 x 80.0 mm (3.8 x 3.1 inches)
Compression	10.0:1
Torque	106.00 Nm (10.8 kgf-m or 78.2 ft.lbs) @ 4000 RPM
Power	77.00 HP (56.2 kW) @ 6550 RPM
Engine type	Twin, four-stroke

Brakes, suspension, Frame and wheels
Seat	Solo seat
Wheels	Wire 32-spoke, steel rims
Rear brakes diameter	255 mm (10.0 inches)
Rear brakes	Single disc. ABS. Nissin single piston floating caliper.
Front brakes diameter	310 mm (12.2 inches)
Front brakes	Single disc. ABS. Nissin 2-piston floating caliper
Rear tyre	150/80-16
Front tyre	100/90-19
Rear wheel travel	120 mm (4.7 inches)
Rear Suspension	Kayaba chromed spring twin shocks with adjustable preload
Front wheel travel	120 mm (4.7 inches)
Front Suspension	Kayaba 41mm forks
Trail	88 mm (3.5 inches)
Rake (fork angle)	25.8°
Frame type	Tubular steel cradle. Twin-sided, tubular steel swing arm.
Physical measures and capacities
Oil capacity	4.50 litres (0.30 quarts)
Fuel capacity	10.60 litres (2.80 gallons)
Wheelbase	1,510 mm (59.4 inches)
Overall width	800 mm (31.5 inches)
Overall height	1,025 mm (40.4 inches)
Seat height	690 mm (27.2 inches) If adjustable, lowest setting.
Weight incl. oil, gas, etc	228.0 kg (502.7 pounds)
Other specs
Maintenance	Find parts, fluids, filters, maintenance tools and service items on eBay
Factory warranty	24 months unlimited milage
Instruments	LCD multi-functional instrument pack
Starter	Electric
Color options	Black, dark red

Performance Profile & Rider Fit

77 hp

Peak Power

4.8s

0-60 mph

Best For

Track15%

City65%

Cornering55%

Daily Riding55%

Touring30%

Passenger20%

Rider Profile

Best For	Suits riders from confident beginners through experienced owners who want a characterful cruiser rather than outright performance.
Purpose	Built primarily for stylish, relaxed cruising and short-to-medium rides where looks and feel matter as much as outright capability.
Rider Fit	Low seat height and manageable weight make it accessible to shorter riders, though the low-slung bobber stance limits ground clearance and legroom for taller riders.
Character	A torquey, characterful parallel twin wrapped in classic bobber styling, delivering relaxed, satisfying low-rev performance rather than high-rev thrills.
Not Ideal For	Not suited to riders seeking sharp sport handling, long-distance touring comfort, 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

2018 Triumph Bonneville Bobber Rider Ergonomics Assessment

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Inseam (optional)

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Feet:

At 690mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2018 Triumph Bonneville Bobber, with a moderate knee angle of around 110 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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