Naked Motorcycles
2021Triumph Bonneville T100
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The 2021 Triumph Bonneville T100 is a versatile 900cc naked bike suited to riders seeking classic styling with modern performance. Its liquid-cooled parallel-twin engine delivers accessible power and torque, making it equally at home for commuting, weekend rides, or casual touring. Known for its retro aesthetics combined with contemporary electronics and fuel injection, it appeals to both purists and practical riders.
- Capacity
- 900.0 ccm
- Engine
- Parallel Twin, four-stroke
- Gearbox
- 5-speed
- Dry weight
- 213.0 kg
- Seat height
- 790 mm
- Power
- 64.1 HP (46.8 kW) @ 7400 RPM
What’s new for the 2021 Triumph Bonneville T100
vs the 2020| Spec | 2020 | 2021 |
|---|---|---|
| Power | 55.0 HP (40.1 kW) @ 5900 RPM | 64.1 HP (46.8 kW) @ 7400 RPM |
| Torque | 80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3230 RPM | 80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3750 RPM |
| Wet weight | — | 228.2 kg (503.1 pounds) |
| Front suspension | KYB 41mm forks | 41mm cartridge forks |
| Rear suspension | KYB chromed spring twin shocks with adjustable preload | Twin RSU’s, with pre-load adjustment |
| Front brakes | Single disc. ABS. Nissin 2-piston floating caliper. | Single disc. ABS. Brembo 2-piston floating caliper. |
| Cooling | Air | Liquid |
| Compression | 10.6:1 | 11.0:1 |
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
- 900.0 ccm
- Power
- 64.1 HP (46.8 kW) @ 7400 RPM
- CO2 Emissions
- 89 CO2 g/km
- Torque
- 80.0 Nm (8.2 kgf-m) @ 3750 RPM
- Engine type
- Parallel Twin, four-stroke
- Fuel consumption
- 3.80 litres/100 km (26.3 km/l)
- Power/weight ratio
- 0.3009 HP/kg
- Bore x stroke
- 84.6 x 80.0 mm
- Compression
- 11.0:1
- Cooling system
- Liquid
- Fuel system
- Injection
- Starting
- Electric
- Ignition
- Digital-inductive type via engine management system
- Valves per cylinder
- 4
- Lubrication system
- Wet sump
Transmission
- Gearbox
- 5-speed
- Transmission type
- Manual
- Final drive
- Chain
- Clutch
- Wet, multi-plate assist clutch
Dimensions & weight
- Wheelbase
- 1450 mm
- Overall length
- 2230 mm
- Overall width
- 715 mm
- Overall height
- 1100 mm
- Seat height
- 790 mm
- Dry weight
- 213.0 kg
- Wet weight
- 228.2 kg
- Fuel capacity
- 14.50 litres
- Oil capacity
- 4.50 litres
Chassis & suspension
- Frame
- Tubular steel twin cradle. Twin-sided, tubular steel swing arm.
- Front suspension
- 41mm cartridge forks
- Rear suspension
- Twin RSU’s, with pre-load adjustment
- Front wheel travel
- 120 mm
- Rear wheel travel
- 120 mm
- Rake (fork angle)
- 25.5°
- Trail
- 104 mm
Brakes & wheels
- Front brakes
- Single disc. ABS. Brembo 2-piston floating caliper.
- Front brakes diameter
- 310 mm
- Rear brakes
- Single disc. ABS. Nissin 2-piston floating caliper.
- ABS
- Yes
- Front tyre
- 100/90-18
- Rear tyre
- 150/70-R17
Other
- Color options
- Jet black, Carnival Red/Fusion White, Fusion White/Lucern Blue
- Warranty
- 24
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 cc | 865 cc | 865 cc | 900 cc | 900 cc |
| Dry weight | 205 kg | 205 kg | 205 kg | 213 kg | — |
| Seat height | 775 mm | 775 mm | 775 mm | 790 mm | 790 mm |
| Fuel capacity | 16 L | 16 L | 15.9 L | 14.5 L | — |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Safety Recalls
⚠ 2 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.
Source: NHTSA. View all Triumph recalls →
Rider Reviews
Common questions
What is the engine size of the Triumph Bonneville T100?
The 2021 Triumph Bonneville T100 has a Capacity of 900.0 ccm (54.92 cubic inches).
What engine power does the Triumph Bonneville T100 have?
The 2021 Triumph Bonneville T100 has a Power of 64.1 HP (46.8 kW) @ 7400 RPM.
How many gears does the Triumph Bonneville T100 have?
The 2021 Triumph Bonneville T100 has a Gearbox of 5-speed.
What is the torque of the Triumph Bonneville T100?
The 2021 Triumph Bonneville T100 has a Torque of 80.0 Nm (8.2 kgf-m or 59.0 ft.lbs) @ 3750 RPM.
How much does the Triumph Bonneville T100 weigh?
The 2021 Triumph Bonneville T100 has a Dry weight of 213.0 kg (469.6 pounds).
Shop this bike
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The 2021 Triumph Bonneville T100 is a stunning motorcycle that offers a perfect blend of classic design and modern performance. Its iconic look harkens back to the golden age of motorcycling, with its timeless lines and vintage-inspired details. The T100 is powered by a smooth and responsive 900cc parallel-twin engine, delivering strong and reliable performance on the road. With its comfortable riding position and agile handling, this bike is perfect for both city commuting and long weekend rides.
In addition to its beautiful aesthetics, the 2021 Triumph Bonneville T100 is also packed with advanced technology features. It comes equipped with ride-by-wire throttle for precise control, as well as ABS braking for added safety on the road. The T100 also offers a range of accessories to customize the bike to your personal style. Whether you're a seasoned rider or a novice looking for a classic ride, the Triumph Bonneville T100 is a motorcycle that delivers on both style and performance.
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