GoogleCustom Search

2008 Triumph Rocket III

Triumph Rocket III

Updates for 2008:

  • New 2008 colour: Claret

The Triumph Rocket III has defined a unique niche in the clone-like performance cruiser market where it sits in a class of its own thanks to its striking looks, stunning performance and incredible specification.

The Rocket III, with its fuel injected, three cylinder, twelve-valve 2,294cc powerplant giving 147ftlbs of torque at 2,500rpm, is officially the world’s largest capacity production motorcycle. The incredible engine means that even two-up the Rocket III accelerates incredibly hard without obvious effort, and relentless forward motion is just a slight twist of throttle away. But, despite the huge capacity of this amazing machine, it was designed first and foremost to be ridden. A good turning circle, seamless fuel injection and a low centre of gravity combine to make manoeuvring at low speed surprisingly easy, whilst the steering geometry and overall length give a securely planted and confident feel. Added to this is a generous ground clearance, making the Rocket III a truly useable machine that can cruise streets or hustle turns with equal and effortless ability.

Twin butterfly valves for each throttle body are used to give precise control over the engine and this set-up allows the ECU to vary the mixture flow and ignition map dependent on gear selected and road speed. The torque curve is thus tailored specifically for each gear ratio. And the result is impressive – over 90% of the engine’s prodigious torque output is available at just 2,000rpm, giving incredible levels of flexibility and making the five-speed gearbox (nearly) redundant.

The Rocket III’s chassis is something quite special and centres on a large tubular steel twin-spine frame, which houses the motor. Maintenance-free shaft drive lays power to the massive 240/50-section rear tyre while 43mm upside down forks and spring preload adjustable twin rear shocks, built specifically for the Rocket III, add control, composure and supple compliance. The front brakes - twin four-piston calipers mated with 320mm floating discs – are built to sports bike specification and provide awesome stopping power. The rear brake, developed especially by Brembo, is a single twin piston caliper and 316mm disc.

The ability to personalise the Rocket III was integral to the original design philosophy of the bike. Developed and tested in-house by accessories engineers in collaboration with the same Triumph design team and test riders responsible for the bike, the Rocket III’s Accessory range reflects the same close attention to detail and finish as the bike itself. The choices a Rocket III owner can make to customise and enhance their bike are huge and for 2008 the accessory range has increased to include adjustable chrome highway pegs and stylish chrome teardrop shaped mirrors. The new patented adjustable rider backrest can be used in conjunction with the classic touring seat to allow the Rocket III to be ridden for longer periods of time, reducing rider fatigue and enhancing comfort.

For 2008, a new luxurious Claret colour option joins Phantom Black.

The word ‘awesome’ is often overused in connection with motorcycles. Except when it’s used in connection with the Rocket III. Then it’s barely adequate.

Colour Options:
Phantom Black

Triumph Accessories:

Accessory Silencers
Silencer End Caps
Silencer Upgrade
Exhaust Flange Covers - Chrome
Leather Panniers
Pannier Dresser Rails
Pannier Embellisher - Side
Pannier Embellisher - Top
Leather Tank Cover
Pannier Inner Bags
Knee Pads
Leather Embellisher - Chrome
Embellisher - Chrome
Fly Screen, Colour Coordinated
Roadster Screen
Summer Screen
Lower Air Deflectors
Front End Fixing Kit
Tall Sissy Bar/Luggage Rack
Short Sissy Bar/Luggage Rack
Sissy Bar Badge
Sissy Bar Backrests  
Roadster Gel Seat - Dual
Touring Gel Seats
Lowrider Seat - Pillion
Dual Seat Kit - Classic
Classic Touring Seat - Dual
Adjustable Rider Backrest
Classic Handlebar Kit
Classic Footboard Kit
Fog Lamp Kit
Chrome Frame Covers
Oil Tank Embellishers
Oil Tank - Chrome
Oil Tank Embellisher – Chrome
Adjustable Highway Peg Mount
Short Highway Peg Mount
Highway Pegs, Logo - Chrome
Dresser Bars, Engine
Rear Dresser Bars - Chrome
License Plate Frame - Chrome
Oval Style Mirrors
Teardrop Style Mirrors
Oil Temperature Gauge
Clock Kit
Fuel Gauge Kit
Top Yoke – Chrome
Engine Bolt Finisher Kit - Chrome
Cam Chain Tensioner Finisher - Chrome
Chrome Master Cylinder Cap
Chrome Side Panels
Gearchange Actuator - Chrome
Axle Nut Covers - Chrome
Radiator End Caps, Colour Coordinated
Tank Pad
Aux Power Socket
Water Pump Cover - Chrome
Inspection Cover - Chrome
Alarm Immobiliser
Dust Cover
Auxiliary Power Connector
Optimate Adaptor
Heated Grip Kit
Chrome Cam Cover

Rocket III Specification:




Liquid-cooled, DOHC, in-line 3-cylinder






101.6 x 94.3mm

Fuel System


Multipoint sequential electronic fuel injection twin butterflies, progressive linkage on primary butterflies


Final Drive





Wet, multi-plate




Gear Ratios


1st 2.929:1
2nd 1.947:1
3rd 1.435:1
4th 1.160:1
5th 0.964:1




Tubular steel, twin spine



Twin-sided, steel (houses drive shaft)



Cast alluminium alloy 5-spoke 17 x 3.5in



Cast alluminium alloy 5-spoke 16 x 7.5in



150/80 R 17



240/50 R 16



Kayaba 43mm upside down forks 120mm travel



Kayaba chromed spring twin shocks with 5 position adjustable preload. 105mm wheel travel



Twin 320mm floating discs, Nissin 4 piston fixed calipers



Single 316mm fixed disc, Brembo 2 piston floating caliper

Instrument display/functions


Analogue speedometer featuring LCD odometer, trip information and analogue tachometer




2,500mm (98.4in)

Width (Handlebars)


970mm (38.2in)



1,165mm (45.9in)

Seat Height


740mm (29.1in)



1,695mm (66.7in)




Weight (Dry)


320kg (704lbs)

Fuel Tank Capacity


24 litres (5.3 gal)

Maximum Power


142PS (140bhp/104kW) at 6,000rpm

Maximum Torque


200Nm (147ft.lbf) at 2,500rpm