2026Triumph Speed 400

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The 2026 Triumph Speed 400 is a modern middleweight roadster designed for riders seeking engaging everyday performance and nimble handling. Powered by a 398cc parallel-twin engine delivering 39.5 horsepower and 27.7 ft-lb of torque, it combines approachable power with excellent maneuverability. Known for its responsive suspension, dual ABS braking, and accessible ergonomics, the Speed 400 excels as an ideal daily commuter and weekend canyon carver.

Capacity: 398.0 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Wet weight: 170.0 kg
Seat height: 790 mm
Power: 39.4 HP (29.4 kW) @ 8000 RPM

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Other years 2025 2026 2027

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail15%

Cornering80%

City riding88%

Daily riding85%

Touring50%

Two-up55%

Track45%

Best for: Designed as a versatile single-cylinder roadster that excels at city commuting, weekend cornering fun, and learning the ropes of a bigger machine.
Built for: Feels like a modern, torquey single with a premium chassis feel, upside-down forks, and radial brakes giving it a sportier edge than typical entry-level bikes.
Not ideal for: Not the right choice for riders wanting serious long-distance touring comfort, high-speed motorway cruising, or genuine 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?

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Your height

Inseam (optional)

Units

At 790mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with both feet flat on the 2026 Triumph Speed 400, 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 751-820 mm — Middle Ground →

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Range and running costs

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Units

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Fuel per litre

Riding a year

Based on the published US (EPA-style) fuel economy estimate 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: 398.0 ccm
Power: 39.4 HP (29.4 kW) @ 8000 RPM
CO2 Emissions: 100 CO2 g/km
EPA Certificate No.: TTDXC.400IND-008-R01
EPA Est. Fuel Consumption: 4.24 L/100km (55.5 US mpg)
EPA CO Emissions: 2.0 CO g/km
Torque: 37.5 Nm (3.8 kgf-m) @ 6500 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.2318 HP/kg (wet)
Bore x stroke: 89.0 x 64.0 mm
Compression: 12.0:1
Fuel system: Injection
Aspiration: Naturally aspirated
Valves per cylinder: 4

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet, multi-plate, slip & assist

Dimensions & weight

Wheelbase: 1377 mm
Overall width: 814 mm
Overall height: 1084 mm
Seat height: 790 mm
Wet weight: 170.0 kg
Fuel capacity: 13.00 litres
Dry weight: Not on record - add it

Chassis & suspension

Frame: Hybrid spine/perimeter, tubular steel, bolt-on rear subframe
Front suspension: 43mm upside down Big Piston forks. 140mm wheel travel
Rear suspension: Gas monoshock RSU with external reservoir and pre-load adjustment. 130mm wheel travel
Rake (fork angle): 24.6°
Trail: 102 mm
Rake: 24.6 º