Triumph Speed 400
- Production years
- 2025–2026
- Brand
- Triumph
Choose model year
Model year
1 / 5
Selected year: 2026
Technical specifications
- Engine capacity
- 398 cm³
- Power
- 39 hp (29 kW) at 8,000 rpm
- Wet weight
- 170 kg
- Seat height
- 790 mm
Specifications
Engine
Engine
- Aspiration
- Naturally aspirated
- Bore x stroke
- 89.0 x 64.0 mm
- Engine capacity
- 398 cm³
- Compression ratio
- 12.0:1
- Engine type
- Single, four-stroke
- Fuel system
- Injection
- Valves per cylinder
- 4
Performance and transmission
Performance and transmission
- Co2 emissions
- 100 g/km CO₂
- Epa co emissions
- 2.0 CO g/km
- Epa est fuel consumption
- 4.24 L/100 km
- Power
- 39 hp (29 kW) at 8,000 rpm
- Power weight ratio
- 0.2318 HP/kg (wet)
- Torque
- 37.5 Nm at 6,500 rpm
- Top speed
- 148.9 km/h (93 mph) · measured
- Clutch
- Wet, multi-plate, slip & assist
- Final drive
- Chain
- Gearbox
- Manual 6-speed
- Transmission type
- Manual
Dimensions and weight
Dimensions and weight
- Fuel capacity
- 13 L
- Fuel tank material
- Metal
- Overall height
- 1,084 mm
- Overall width
- 814 mm
- Seat height
- 790 mm
- Wet weight
- 170 kg
- Wheelbase
- 1,377 mm
Chassis and suspension
Chassis and suspension
- Frame
- Hybrid spine/perimeter, tubular steel, bolt-on rear subframe
- Front suspension
- 43mm upside down Big Piston forks. 140mm wheel travel
- Rake
- 24.6 º
- Rear suspension
- Gas monoshock RSU with external reservoir and pre-load adjustment. 130mm wheel travel
- Trail
- 102 mm
Brakes and wheels
Brakes and wheels
- Abs
- Yes
- Front brakes
- 300mm fixed disc, four-piston radial caliper, ABS
- Front tyre
- 110/70 R17
- Rear brakes
- 230mm fixed disc, floating caliper, ABS
- Rear tyre
- 150/60 R17
Model years
No recorded specification changes between model years.
| Specification | ||
|---|---|---|
| Engine capacity | 398 cm³ | 398 cm³ |
| Power | 39 hp (29 kW) | 39 hp (29 kW) |
| Torque | 37.5 Nm | 37.5 Nm |
| Wet weight | 170 kg | 170 kg |
| Seat height | 790 mm | 790 mm |
| Fuel capacity | 13 L | 13 L |
| Top speed | 148.9 km/h (93 mph) · measured | 148.9 km/h (93 mph) · measured |
Rider fit
Rider fit calculator
Calculated in your browser
Don't know it? Leave this empty and we'll estimate it from your height.
Estimated from your height: 79 cm
How to measure
Stand barefoot with your back to a wall. Hold a book firmly between your legs, then measure from the floor to the top edge of the book.
Estimated ground reach
Both feet likely flat
You should have a stable stance at a stop, although seat width and suspension setup still matter.
Seat height
790 mm
Approx. loaded height
760 mm
Estimate assumes about 30 mm of suspension sag. Seat width, footwear, luggage and suspension settings can change real reach. Always sit on the motorcycle before buying.
Fuel range calculator
Enter your expected fuel consumption to estimate the distance on a full tank, with or without a fuel reserve.
Tank 13 L at 5.5 L/100 km
Lower consumption = longer range.
Estimated range
236 km
With 10% reserve
213 km
This is a planning estimate, not a measured result. Speed, route, weather, load and riding style can change real consumption.
FAQ
What is the top speed of Triumph Speed 400?
The Triumph Speed 400 has a top speed of 148.9 km/h (93 mph) (measured figure). For model year 2026.
What is the weight of Triumph Speed 400?
The Triumph Speed 400 weighs 170 kg (wet weight). For model year 2026.
What are the specs of Triumph Speed 400?
The Triumph Speed 400 has the following key specifications (specs) for model year 2026: 398 cc; 39 hp (29 kW); 37.5 Nm; 170 kg (wet weight); seat height 790 mm; fuel tank 13 L. Specification table
How much horsepower does Triumph Speed 400 have?
The Triumph Speed 400 makes 39 hp (29 kW) at 8,000 rpm, with a torque of 37.5 Nm at 6,500 rpm. For model year 2026.
What is the seat height of Triumph Speed 400?
The Triumph Speed 400 has a seat height of 790 mm. For model year 2026.
What is the fuel tank capacity of Triumph Speed 400?
The Triumph Speed 400 has a fuel tank capacity of 13 L. Its calculated range is approximately 307 km; actual range varies. For model year 2026.
What is the fuel consumption of Triumph Speed 400?
The Triumph Speed 400 has a fuel consumption of 4.2 L/100 km (55.5 mpg US; 66.6 mpg UK). For model year 2026.
Does the Triumph Speed 400 meet the numerical A2 limits?
The Triumph Speed 400 meets the numerical A2 limits: 29.4 kW, 0.17 kW/kg. This does not confirm licence eligibility for every version and market. For model year 2026.
