Naked Motorcycles
2027Triumph Speed 400
37 fields on record
The Triumph Speed 400 continues as the naked-roadster sibling to the Scrambler 400X for 2027, sharing the same 398cc single-cylinder engine and its claimed 39.5 hp at 8,000 rpm and 27.7 ft-lb at 6,500 rpm through a 6-speed gearbox. At a lower 790mm seat height and a claimed 170 kg wet weight, it trades the Scrambler's off-road stance for a lower, more street-focused riding position while keeping the same 43mm upside-down forks and radial four-piston front brake.
- 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
How it rides
Editorial estimate from the spec sheet - not lab tested- 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?
Worked out in your browser - nothing is sent to usRange and running costs
Worked out in your browser - nothing is sent to usBased 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.
Engine
- Capacity
- 398.0 ccm
- Power
- 39.4 HP (29.4 kW) @ 8000 RPM
- CO2 Emissions
- 100 CO2 g/km
- EPA Certificate No.
- VTDXC.400IND-009
- 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
Brakes & wheels
- Front brakes
- 300mm fixed disc, four-piston radial caliper, ABS
- Rear brakes
- 230mm fixed disc, floating caliper, ABS
- ABS
- Yes
- Front tyre
- 110/70 R17
- Rear tyre
- 150/60 R17
Other
- Fuel Tank Material
- Metal
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 | 2025 | 2026 | 2027 |
|---|---|---|---|
| Capacity | 398 cc | 398 cc | 398 cc |
| Seat height | 790 mm | 790 mm | 790 mm |
| Fuel capacity | 13 L | 13 L | 13 L |
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
Rider Reviews
Common questions
What is the engine size of the Triumph Speed 400?
The 2027 Triumph Speed 400 has a Capacity of 398.0 ccm (24.29 cubic inches).
What engine power does the Triumph Speed 400 have?
The 2027 Triumph Speed 400 has a Power of 39.4 HP (29.4 kW) @ 8000 RPM.
How many gears does the Triumph Speed 400 have?
The 2027 Triumph Speed 400 has a Gearbox of 6-speed.
What is the torque of the Triumph Speed 400?
The 2027 Triumph Speed 400 has a Torque of 37.5 Nm (3.8 kgf-m or 27.7 ft.lbs) @ 6500 RPM.
How much does the Triumph Speed 400 weigh?
The 2027 Triumph Speed 400 has a Wet weight of 170.0 kg (374.8 pounds).
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