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Cruisers

2012Triumph Rocket III Roadster

★ 3.3

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The 2012 Triumph Rocket III Roadster is a heavyweight cruiser powered by an exceptional 2294cc triple-cylinder engine delivering 148 horsepower and 221 Nm of torque, making it ideal for riders seeking raw power and commanding presence. Known for its unique three-cylinder character and shaft-driven reliability, this muscle cruiser excels at both highway cruising and commanding attention. Its responsive engine and composed handling make it approachable for experienced riders despite its imposing specifications.

Capacity: 2294.0 ccm
Engine: In-line three-cylinder, four-stroke
Gearbox: 5-speed
Dry weight: 327.0 kg
Seat height: 750 mm
Power: 148.0 HP (108.9 kW) @ 5750 RPM

⇄ Compare with another bike ＋ Add to garage All model years

What’s new for the 2012 Triumph Rocket III Roadster

vs the 2011

Spec	2011	2012
Power	146.0 HP (107.4 kW)	148.0 HP (108.9 kW) @ 5750 RPM
Front brakes	Double disc	Double disc. Nissin 4-piston fixed calipers, Nissin ABS system.
Rear brakes	Single disc	Single disc. Nissin 4-piston fixed calipers, Nissin ABS system.

Other years 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering45%

City riding45%

Daily riding65%

Touring65%

Two-up70%

Track25%

Best for: Built as a muscular power-cruiser, it delivers brutal straight-line acceleration and effortless overtaking rather than nimble cornering ability.
Built for: The Rocket III Roadster has a dominant, torque-drenched personality that rewards relaxed, throttle-driven riding over aggressive lean-angle attacks.
Not ideal for: This is not the right bike for new riders, tight urban commuting, or anyone seeking a light, flickable machine for twisty backroads.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 750mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2012 Triumph Rocket III Roadster, with a cramped knee angle of around 85 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 750 mm or under — Short Kings →

Find bikes that fit your height →

Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 2294.0 ccm
Power: 148.0 HP (108.9 kW) @ 5750 RPM
CO2 Emissions: 188 CO2 g/km
EPA Certificate No.: CTDXC2.30VJM-006
EPA CO Emissions: 7.9 CO g/km
Torque: 221.0 Nm (22.5 kgf-m) @ 2750 RPM
Engine type: In-line three-cylinder, four-stroke
Fuel consumption: 8.10 litres/100 km (12.3 km/l)
Power/weight ratio: 0.4526 HP/kg (dry)
Bore x stroke: 101.6 x 101.6 mm
Compression: 8.7:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: Digital-inductive type via engine management system
Aspiration: Naturally aspirated
Valves per cylinder: 4

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Shaft
Clutch: Wet. multi-plate

Dimensions & weight

Wheelbase: 1695 mm
Overall length: 2500 mm
Overall width: 970 mm
Overall height: 1165 mm
Seat height: 750 mm
Dry weight: 327.0 kg
Wet weight: 367.0 kg
Fuel capacity: 24.00 litres
Oil capacity: 5.90 litres

Chassis & suspension

Frame: Tubular steel. twin spine
Front suspension: Kayaba 43mm upside down forks. 120mm travel
Rear suspension: Kayaba black spring twin shocks with 5 position adjustable preload. 105mm wheel travel
Front wheel travel: 120 mm
Rear wheel travel: 105 mm
Rake (fork angle): 32.0°
Trail: 148 mm

Brakes & wheels

Front brakes: Double disc. Nissin 4-piston fixed calipers, Nissin ABS system.
Front brakes diameter: 320 mm
Rear brakes: Single disc. Nissin 4-piston fixed calipers, Nissin ABS system.
Rear brakes diameter: 316 mm
ABS: Yes
Front tyre: 150/80-R17
Rear tyre: 240/50-R16

Other

Color options: Phantom Black

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2010	2012	2015	2017	2019
Capacity	2294 cc	2294 cc	2294 cc	2294 cc	2294 cc
Dry weight	320 kg	327 kg	334 kg	334 kg	334 kg
Seat height	750 mm	750 mm	750 mm	750 mm	750 mm
Fuel capacity	24 L	24 L	24 L	24 L	24 L