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Naked Motorcycles

2018Triumph Street Twin

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The 2018 Triumph Street Twin is a lightweight, accessible modern classic that appeals to beginner and experienced riders alike. Known for its minimalist retro styling, manageable 900cc twin-cylinder engine, and user-friendly ergonomics, it delivers authentic motorcycle character without intimidating performance. Its low seat height, composed handling, and traction control make it ideal for everyday commuting and weekend rides.

Capacity: 900.0 ccm
Engine: Parallel Twin, four-stroke
Gearbox: 5-speed
Dry weight: 198.0 kg
Seat height: 750 mm
Power: 54.2 HP (40.4 kW) @ 5900 RPM

⇄ Compare with another bike All model years

What’s new for the 2018 Triumph Street Twin

vs the 2017

Spec	2017	2018
Front brakes	Single disc. ABS. Floating discs. Two-piston calipers.	Single disc. ABS. Floating discs. Nissin two-piston calipers.
Rear brakes	Single disc. ABS. Floating disc. Two-piston calipers.	Single disc. ABS. Floating disc. Nissin two-piston calipers.

Other years 2016 2017 2018 2019 2020 2021 2022

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering72%

City riding88%

Daily riding85%

Touring45%

Two-up50%

Track25%

Best for: Built primarily as a stylish, easygoing modern classic for commuting and weekend rides rather than outright performance or long-distance touring.
Built for: A torquey, characterful parallel-twin roadster that prioritizes smooth, tractable real-world power and classic British styling over outright speed.
Not ideal for: Not the right choice for riders chasing high-speed thrills, serious off-road capability, or a dedicated long-haul touring setup with passenger comfort and wind protection.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 750mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2018 Triumph Street Twin, with a moderate knee angle of around 115 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 750 mm or under — Short Kings →

Find bikes that fit your height →

Full specifications

Engine

Capacity: 900.0 ccm
Power: 54.2 HP (40.4 kW) @ 5900 RPM
CO2 Emissions: 86 CO2 g/km
EPA Certificate No.: JTDXC.900BBF-006
EPA Est. Fuel Consumption: 3.67 L/100km (863.2 mpg)
EPA CO Emissions: 2.7 CO g/km
Torque: 80.0 Nm (8.2 kgf-m) @ 3230 RPM
Engine type: Parallel Twin, four-stroke
Fuel consumption: 3.90 litres/100 km (25.6 km/l)
Power/weight ratio: 0.2737 HP/kg
Bore x stroke: 84.6 x 80.0 mm
Compression: 10.6:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Aspiration: Naturally aspirated
Valves per cylinder: 4

Transmission

Gearbox: 5-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet. multi-plate assist

Dimensions & weight

Wheelbase: 1415 mm
Overall width: 785 mm
Overall height: 1115 mm
Seat height: 750 mm
Dry weight: 198.0 kg
Wet weight: 215.9 kg
Fuel capacity: 12.10 litres
Oil capacity: 3.80 litres

Chassis & suspension

Frame: Tubular steel cradle
Front suspension: KYB 41mm forks.
Rear suspension: KYB twin shocks with adjustable preload.
Front wheel travel: 120 mm
Rear wheel travel: 120 mm
Rake (fork angle): 25.1°
Trail: 102 mm

Brakes & wheels

Front brakes: Single disc. ABS. Floating discs. Nissin two-piston calipers.
Front brakes diameter: 310 mm
Rear brakes: Single disc. ABS. Floating disc. Nissin two-piston calipers.
Rear brakes diameter: 255 mm
ABS: Yes
Front tyre: 100/90-18
Rear tyre: 150/70-R17

Other

Color options: Jet Black, Cranberry Red, Aluminum Silver, Matt Black, Matt Black
Comments: Traction control

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	2016	2018	2019	2021	2022
Capacity	—	—	900.0 ccm (54.92 cubic inches)	900.0 ccm (54.92 cubic inches)	900.0 ccm (54.92 cubic inches)
Dry weight	198.2 kg (437.0 pounds)	198.0 kg (436.5 pounds)	198.0 kg (436.5 pounds)	—	—
Seat height	749 mm (29.5 inches)	750 mm (29.5 inches)	759 mm (29.9 inches)	765 mm (30.1 inches)	765 mm (30.1 inches)
Fuel capacity	12.11 litres (3.20 gallons)	12.11 litres (3.20 gallons)	12.11 litres (3.20 US gallons)	12.11 litres (3.20 US gallons)	12.11 litres (3.20 US gallons)
Color options	Black, Red, Silver, Matt Black	Jet Black, Cranberry Red, Aluminum Silver, Matt Black, Matt Black	Korosi Red, Jet Black, Matt Ironstone	Cobalt Blue, Jet Black, Matt Ironstone	Cobalt Blue, Jet Black, Matt Ironstone

Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.

Rider Reviews

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MotorcycleDB Review

The 2018 Triumph Street Twin is a versatile and stylish motorcycle that offers a smooth and enjoyable riding experience. With 900cc of power and a responsive throttle, this bike is great for both city commuting and highway cruising. The sleek design and comfortable seating make it a popular choice for riders of all experience levels.

One of the standout features of the 2018 Triumph Street Twin is its modern technology, including ride-by-wire throttle and ABS brakes. These features enhance safety and control, making it a reliable option for daily use. Additionally, its customizable options for accessories and features, such as heated grips and LED lighting, allow for a personalized riding experience. Overall, the 2018 Triumph Street Twin is a well-rounded motorcycle that offers both performance and style for riders looking for a versatile and enjoyable ride.