2009Triumph Rocket III

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The 2009 Triumph Rocket III is a muscle cruiser built for riders seeking raw power and distinctive character. Its massive 2294cc three-cylinder engine delivers commanding low-end torque, making it best suited for cruising and attention-grabbing presence rather than sportiness. Known for unconventional styling and the mechanical drama of its unique triple engine configuration.

Capacity: 2294.0 ccm
Engine: In-line three-cylinder, four-stroke
Gearbox: 5-speed
Dry weight: 320.0 kg
Seat height: 740 mm
Power: 139.5 HP (104.0 kW) @ 5750 RPM

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What’s new for the 2009 Triumph Rocket III

vs the 2008

Spec	2008	2009
Front suspension	43mm upside down forks	43mm upside down forks. 120mm travel
Rear suspension	Chromed spring twin shocks with adjustable preload	Chromed spring twin shocks with 5 position adjustable preload. 105mm wheel travel

Other years 2004 2005 2006 2007 2008 2009

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering30%

City riding35%

Daily riding55%

Touring62%

Two-up65%

Track15%

Best for: Built as a muscle cruiser that delivers massive straight-line thrust and effortless overtaking power rather than nimble cornering.
Built for: A brawny, torque-dominant cruiser whose enormous inline-triple engine defines the riding experience with relentless low-end pull.
Not ideal for: Not a good fit for riders seeking a lightweight, flickable bike for tight twisties or off-road adventures.

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 740mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2009 Triumph Rocket III, with a cramped knee angle of around 80 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 →

Full specifications

Engine

Capacity: 2294.0 ccm
Power: 139.5 HP (104.0 kW) @ 5750 RPM
EPA Certificate No.: 9TDXC2.30BAT-003
EPA CO Emissions: 8.2 CO g/km
Torque: 200.0 Nm (20.4 kgf-m)
Engine type: In-line three-cylinder, four-stroke
Power/weight ratio: 0.4359 HP/kg (dry)
Bore x stroke: 101.6 x 94.3 mm
Compression: 8.7:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: Digital - inductive type - via electronic 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: 740 mm
Dry weight: 320.0 kg
Fuel capacity: 24.00 litres

Chassis & suspension

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

Brakes & wheels

Front brakes: Double disc
Front brakes diameter: 320 mm
Rear brakes: Single disc
Rear brakes diameter: 316 mm
Front tyre: 150/80-R17
Rear tyre: 240/50-R16

Other

Color options: Claret, Phantom Black
Fuel Tank Material: Metal

Specs last verified against published sources: October 2026.

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	2004	2005	2007	2008	2009
Capacity	2294 cc	2294 cc	2294 cc	2294 cc	2294 cc
Dry weight	320 kg	320 kg	319 kg	319 kg	320 kg
Seat height	740 mm	740 mm	740 mm	739 mm	740 mm
Fuel capacity	25 L	24.5 L	23.8 L	23.8 L	24 L