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2019Triumph Bonneville T120 Diamond Edition

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The 2019 Triumph Bonneville T120 Diamond Edition is a limited-production retro-modern cruiser designed for riders seeking classic styling with contemporary performance. This numbered collector's bike combines its iconic air-cooled parallel-twin engine with heritage aesthetics and modern conveniences like an LCD instrument display. Best suited to enthusiasts valuing exclusivity and timeless design, it delivers authentic British motorcycle character for both spirited riding and weekend cruises.

Capacity
1200.0 ccm
Engine
Parallel Twin, four-stroke
Gearbox
6-speed
Dry weight
224.0 kg
Seat height
790 mm
Power
80.0 HP (58.4 kW) @ 6550 RPM
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How it rides

Editorial estimate from the spec sheet - not lab tested
Speed 55Agility 60Comfort 78Off-road 15Touring 65Road manners 80
Off-road & trail15%
Cornering60%
City riding70%
Daily riding78%
Touring65%
Two-up65%
Track20%
Best for
Built for relaxed retro-styled cruising, weekend rides, and everyday commuting rather than outright performance.
Built for
A refined, torque-rich classic parallel-twin that delivers smooth, gentlemanly power with timeless British styling and limited-edition exclusivity.
Not ideal for
Not suited to riders seeking sharp sportbike performance, aggressive cornering ability, or any 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 us
At 790mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2019 Triumph Bonneville T120 Diamond Edition, with a relaxed knee angle of around 120 degrees and a forward-leaning 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 751-820 mm — Middle Ground →

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Range and running costs

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Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine
Capacity
1200.0 ccm
Power
80.0 HP (58.4 kW) @ 6550 RPM
CO2 Emissions
104 CO2 g/km
Torque
105.0 Nm (10.7 kgf-m) @ 3100 RPM
Engine type
Parallel Twin, four-stroke
Fuel consumption
4.50 litres/100 km (22.2 km/l)
Power/weight ratio
0.3571 HP/kg (dry)
Bore x stroke
97.6 x 80.0 mm
Compression
10.0:1
Cooling system
Liquid
Fuel system
Injection
Starting
Electric
Ignition
Digital-inductive type via engine management system
Valves per cylinder
4
Transmission
Gearbox
6-speed
Transmission type
Manual
Final drive
Chain
Clutch
Wet, multi-plate assist clutch
Dimensions & weight
Wheelbase
1450 mm
Overall length
2230 mm
Overall width
785 mm
Overall height
1100 mm
Seat height
790 mm
Dry weight
224.0 kg
Fuel capacity
14.50 litres
Oil capacity
4.50 litres
Chassis & suspension
Frame
Tubular steel cradle. Twin-sided, tubular steel swing arm.
Front suspension
Kyb 41mm cartidge forks,
Rear suspension
Kyb twin shocks with adjustable preload,
Front wheel travel
120 mm
Rear wheel travel
120 mm
Rake (fork angle)
25.5°
Trail
105 mm
Brakes & wheels
Front brakes
Single disc. ABS. Nissin 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
White/Silver
Warranty
24
Modifications compared to previous model
The production run for the Bonneville T120 Diamond Edition is limited to 900, and comes with a numbered certificate, signed by Triumph Motorcycles CEO Nick Bloor; a collector’s item in itself.

Specs last verified against published sources: .

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

Rider Reviews

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MotorcycleDB

The 2019 Triumph Bonneville T120 Diamond Edition motorcycle is a stunning and refined machine that combines classic style with modern performance. The diamond-inspired paint scheme and unique badging give this bike a luxurious and exclusive feel. The 1200cc engine delivers plenty of power and torque, making for a smooth and exhilarating ride. Whether you're cruising around town or hitting the open road, the T120 Diamond Edition offers a comfortable and enjoyable experience.

With its premium features and elegant design, the 2019 Triumph Bonneville T120 Diamond Edition motorcycle is a standout in the modern classic motorcycle market. The attention to detail and craftsmanship is evident in every aspect of this bike, from the chrome accents to the leather seat. The T120 Diamond Edition is a true collector's item that will turn heads wherever you go. If you're in the market for a motorcycle that offers both style and substance, the T120 Diamond Edition is definitely worth considering.

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Common questions

What is the engine size of the Triumph Bonneville T120 Diamond Edition?

The 2019 Triumph Bonneville T120 Diamond Edition has a Capacity of 1200.0 ccm (73.23 cubic inches).

What engine power does the Triumph Bonneville T120 Diamond Edition have?

The 2019 Triumph Bonneville T120 Diamond Edition has a Power of 80.0 HP (58.4 kW) @ 6550 RPM.

How many gears does the Triumph Bonneville T120 Diamond Edition have?

The 2019 Triumph Bonneville T120 Diamond Edition has a Gearbox of 6-speed.

What is the torque of the Triumph Bonneville T120 Diamond Edition?

The 2019 Triumph Bonneville T120 Diamond Edition has a Torque of 105.0 Nm (10.7 kgf-m or 77.4 ft.lbs) @ 3100 RPM.

How much does the Triumph Bonneville T120 Diamond Edition weigh?

The 2019 Triumph Bonneville T120 Diamond Edition has a Dry weight of 224.0 kg (493.8 pounds).

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