Naked Motorcycles
2004Triumph Bonneville T100
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The 2004 Triumph Bonneville T100 is a modern classic that appeals to riders seeking authentic British styling with accessible performance. Its 790cc air-cooled twin delivers smooth, manageable power ideal for both commuting and weekend rides. The bike is celebrated for reviving the iconic Bonneville nameplate with retro charm and reliable, user-friendly character.
- Capacity
- 790.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 205.0 kg
- Seat height
- 775 mm
- Power
- 61.0 HP (44.9 kW)
Other years
2004
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
How it rides
Editorial estimate from the spec sheet - not lab tested- Best for
- Built primarily as a classic-styled roadster for relaxed commuting, weekend rides, and casual cruising rather than outright performance.
- Built for
- Offers a timeless, retro British roadster feel with smooth, torquey power delivery and easygoing, confidence-inspiring manners.
- Not ideal for
- Not the right choice for riders seeking aggressive sportbike speed, track-day performance, or serious off-road capability.
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
- 790.0 ccm
- Power
- 61.0 HP (44.9 kW)
- Torque
- 60.0 Nm (6.1 kgf-m)
- Engine type
- Parallel Twin, four-stroke
- Power/weight ratio
- 0.2976 HP/kg
- Bore x stroke
- 86.0 x 68.0 mm
- Compression
- 9.2:1
- Cooling system
- Air
- Fuel system
- Carburettor
- Starting
- Electric
- Ignition
- Digital - inductive type
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multi-plate
Dimensions & weight
- Wheelbase
- 1493 mm
- Overall length
- 2250 mm
- Overall width
- 860 mm
- Overall height
- 1105 mm
- Seat height
- 775 mm
- Dry weight
- 205.0 kg
- Fuel capacity
- 16.00 litres
Chassis & suspension
- Frame
- Tubular steel cradle
- Front suspension
- 41mm forks
- Rear suspension
- Chromed spring twin shocks with adjustable preloads
- Rake (fork angle)
- 28.0°
Brakes & wheels
- Front brakes
- Single disc
- Front brakes diameter
- 310 mm
- Rear brakes
- Single disc
- Rear brakes diameter
- 255 mm
- Front tyre
- 100/90-R 19
- Rear tyre
- 130/80-R 17
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 | 2010 | 2016 | 2021 | 2026 |
|---|---|---|---|---|---|
| Capacity | 790.00 ccm (48.21 cubic inches) | 865.00 ccm (52.78 cubic inches) | — | 900.0 ccm (54.92 cubic inches) | — |
| Dry weight | 205.0 kg (451.9 pounds) | — | — | — | — |
| Seat height | 775 mm (30.5 inches) | 775 mm (30.5 inches) | 775 mm (30.5 inches) | 790 mm (31.1 inches) | — |
| Fuel capacity | 16.00 litres (4.23 gallons) | 16.00 litres (4.23 gallons) | 15.90 litres (4.20 gallons) | 14.50 litres (3.83 US gallons) | — |
| Color options | — | Forest Green/New England White, Jet Black/Fusion White | Fusion White/Aurum Gold, Jet Black/Cranberry Red | Jet black, Carnival Red/Fusion White, Fusion White/Lucern Blue | — |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Safety Recalls
⚠ 3 open recallsELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATORFeb 2026 · 26V078000
Triumph Motorcycles America, Ltd. is recalling certain 2022-2024 Bonneville T100, Bonneville T120, Bonneville T120 Black, 2024 Bonneville T120 DGR, 2022 Street Twin, Street Scrambler, Street Twin Goldline, Street Scrambler Sandstor, 2023-2024 Speed Twin 900, and Scrambler 900 motorcycles. The wiring between the alternator and main harness connector may short circuit and overheat.
Risk: Overheated wiring increases the risk of a crash or fire.
Remedy: Dealers will replace the current 2-piece connector body with a single in-line crimped connector solution for each of the three wires from the alternator assembly, free of charge. Owner notification letters were mailed March 19, 2026. Owners may contact Triumph customer service at 1-678-854-2010. Triumph's number for this recall is SRAN 641. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov February 18, 2026. Motorcycles included in this recall that were previously repaired under recall 24V785 will need to have the new remedy performed.
ELECTRICAL SYSTEM:WIRING:CONNECTORS/PLUGS/RECEPTACLESOct 2024 · 24V785000
Triumph Motorcycles America, Ltd. (Triumph) is recalling certain 2022-2024 Bonneville T100, T120, T120 Black, 2022 Triumph Street Scrambler, Street Scrambler Sandstorm, Street Twin, Street Twin Goldline, 2023-2024 Scrambler 900, and Speed Twin 900 motorcycles. The wiring between the alternator and main harness connector may short circuit and overheat.
Risk: Overheated wiring increases the risk of a fire or crash.
Remedy: Dealers will install a new wire alignment clip, free of charge. Owner notification letters were mailed November 18, 2024. Owners may contact Triumph customer service at 1-678-854-2010. Triumph's number for this recall is SRAN 627.
SUSPENSION:REAROct 2004 · 04V496000
ON CERTAIN MOTORCYCLES, THERE MAY BE A POOR WELD ON THE REAR SUSPENSION UNIT BODY.
Risk: FAILURE OF THE REAR SUSPENSION UNIT MAY COMPROMISE THE STABILITY OF THE MOTORCYCLE WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL REPLACE THE REAR SUSPENSION UNITS. THE RECALL BEGAN ON DECEMBER 20, 2004. OWNERS SHOULD CONTACT TRIUMPH AT 1-678-854-2010.
Source: NHTSA. View all Triumph recalls →
Rider Reviews
Common questions
What is the engine size of the Triumph Bonneville T100?
The 2004 Triumph Bonneville T100 has a Capacity of 790.0 ccm (48.21 cubic inches).
What engine power does the Triumph Bonneville T100 have?
The 2004 Triumph Bonneville T100 has a Power of 61.0 HP (44.9 kW).
How many gears does the Triumph Bonneville T100 have?
The 2004 Triumph Bonneville T100 has a Gearbox of 5-speed.
What is the torque of the Triumph Bonneville T100?
The 2004 Triumph Bonneville T100 has a Torque of 60.0 Nm (6.1 kgf-m or 44.3 ft.lbs).
How much does the Triumph Bonneville T100 weigh?
The 2004 Triumph Bonneville T100 has a Dry weight of 205.0 kg (451.9 pounds).
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