Cruisers
2008Triumph Rocket III Classic
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The 2008 Triumph Rocket III Classic is a cruiser designed for riders seeking raw power and distinctive character. Its massive 2294cc triple engine delivers 140 horsepower and 147 Nm of torque, making it one of the most powerful cruisers available. Best known for its unconventional three-cylinder engine and commanding presence, it appeals to experienced riders wanting something truly unique.
- Capacity
- 2294.0 ccm
- Engine
- In-line three-cylinder, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 319.3 kg
- Seat height
- 736 mm
- Power
- 140.0 HP (103.0 kW)
What’s new for the 2008 Triumph Rocket III Classic
vs the 2007| Spec | 2007 | 2008 |
|---|---|---|
| Power | 142.0 HP (104.4 kW) @ 6000 RPM | 140.0 HP (103.0 kW) |
| Torque | 200.0 Nm (20.4 kgf-m or 147.5 ft.lbs) | 147.0 Nm (15.0 kgf-m or 108.4 ft.lbs) |
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built as a torque-monster cruiser for relaxed highway cruising and effortless roll-on acceleration rather than for cornering or track work.
- Built for
- The huge 2.3-liter inline-triple gives it a unique character, dominated by massive torque delivery, a deep exhaust growl, and a stately, unhurried demeanor.
- Not ideal for
- This is not the bike for riders seeking agility, off-road capability, or a lightweight, flickable ride through twisty roads.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Will it fit you?
Worked out in your browser - nothing is sent to usEngine
- Capacity
- 2294.0 ccm
- Power
- 140.0 HP (103.0 kW)
- EPA Certificate No.
- 8TDXC2.30BAT-002
- EPA CO Emissions
- 8.2 CO g/km
- Torque
- 147.0 Nm (15.0 kgf-m)
- Engine type
- In-line three-cylinder, four-stroke
- Power/weight ratio
- 0.4385 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
- 1694 mm
- Overall length
- 2499 mm
- Overall width
- 970 mm
- Overall height
- 1166 mm
- Seat height
- 736 mm
- Dry weight
- 319.3 kg
- Fuel capacity
- 23.80 litres
Chassis & suspension
- Frame
- Tubular steel. twin spine
- Front suspension
- 43mm upside down forks
- Rear suspension
- Chromed spring twin shocks with adjustable preload
- Rake (fork angle)
- 32.0°
- Trail
- 152 mm
Brakes & wheels
- Front brakes
- Double disc
- Front brakes diameter
- 320 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 316 mm
- Front tyre
- 150/80-17
- Rear tyre
- 240/50-R16
Other
- Color options
- Cherry Red/New England White. Pacific Blue/Aluminum
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 | 2006 | 2007 | 2008 | 2009 |
|---|---|---|---|---|
| Capacity | 2294 cc | 2294 cc | 2294 cc | 2294 cc |
| Dry weight | 320 kg | 319 kg | 319 kg | 320 kg |
| Seat height | 740 mm | 740 mm | 736 mm | 740 mm |
| Fuel capacity | 24 L | 23.8 L | 23.8 L | 24 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Safety Recalls
⚠ 1 recall may applyFUEL SYSTEM, GASOLINE:FUEL INJECTION SYSTEMSep 2007 · 07V455000
ON CERTAIN MOTORCYCLES, WHEN THE ENGINE IS RETURNING TO IDLE IT MAY STALL.
Risk: IF THE MOTORCYCLE STALLS, THE RIDER WILL HAVE TO RESTART THE ENGINE INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT AND DOWNLOAD NEW ENGINE MANAGEMENT SOFTWARE FREE OF CHARGE. THE RECALL BEGAN ON OCTOBER 17, 2007. OWNERS MAY CONTACT TRIUMPH AT 678-854-2010.
These recalls cover some 2008 bikes of this model. Whether one applies to a specific bike, and whether the repair has already been done, depends on its VIN — check your VIN with NHTSA or ask a dealer.
Source: NHTSA. View all Triumph recalls →
Rider Reviews
Common questions
What is the engine size of the Triumph Rocket III Classic?
The 2008 Triumph Rocket III Classic has a Capacity of 2294.0 ccm (139.99 cubic inches).
What engine power does the Triumph Rocket III Classic have?
The 2008 Triumph Rocket III Classic has a Power of 140.0 HP (103.0 kW).
How many gears does the Triumph Rocket III Classic have?
The 2008 Triumph Rocket III Classic has a Gearbox of 5-speed.
What is the torque of the Triumph Rocket III Classic?
The 2008 Triumph Rocket III Classic has a Torque of 147.0 Nm (15.0 kgf-m or 108.4 ft.lbs).
How much does the Triumph Rocket III Classic weigh?
The 2008 Triumph Rocket III Classic has a Dry weight of 319.3 kg (703.9 pounds).
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