Triumph Speed T4 vs Triumph Speed 400: Differences Explained

The Triumph Speed T4 is not just a stripped down Speed 400; there's a lot more than what meets the eye

Triumph has launched the new Speed T4 and updated the Speed 400 recently. Both roadsters are based on the same 400cc platform but how do they differ from each other? Let’s have a look:

Design

The Triumph Speed T4 and Speed 400 get the same overall design with the round LED headlight, rounded tank and the sleek tail section. The T4 is available in three colour options: Metallic White, Phantom Black and Cocktail Red Wine. The Speed 400 gets four colour schemes: Racing Yellow / Pearl Metallic White, Phantom Black / Pewter Grey, Pearl Metallic White / Pewter Grey and Racing Red / Metallic White. 

The Speed T4 gets an additional “400” graphic on the tank along with a large Triumph logo, the latter of which is also seen on the Speed 400. The styling and font of the bike names on the side panels are also different. The exhaust system is the same on both bikes and gets a blacked-out finish. This is a change from the 2024 Speed 400, which had a brushed metal finish for the exhaust. Same goes for the engine components as well. The throttle body cover on the T4 has a matte black finish while on the Speed 400, it has a brushed metal finish.

The front fender on the T4 is painted in black while the Speed 400’s front fender gets a matte silver finish. The tail section of the Speed 400 also gets the same matte silver finish for all the colour schemes while in the T4, it is colour matched with the tank. The T4 gets a black steel headlight bracket instead of the aluminium unit on the Speed 400. The mirrors on the T4 are handlebar mounted units whereas the Speed 400 gets bar-end mirrors. The other changes include steel handlebar, brake pedal and gear shifter instead of the cast aluminium units of the Speed 400. 

Engine

The Triumph Speed T4 and the Speed 400 are both powered by the same 398.15cc liquid-cooled single-cylinder motor. The difference being the power and torque output from the motor in both bikes. In the Speed 400, the motor produces 40PS at 8,000rpm and 37.5Nm at 6,500rpm whereas in the Speed T4, it produces 31PS at 7,000rpm and 36Nm at 5,000rpm. 

The motor in the T4 revs lower than that of the Speed 400 and the flywheel is heavier as well. Also, the motor produces a higher torque output in the 3,000-5,500rpm range which means it should have better low and mid-range grunt than the Speed 400. Both get a 6-speed gearbox with a slipper clutch. The T4 gets a mechanical throttle whereas the Speed 400 gets a ride-by-wire throttle. While both bikes have the same 6-speed gearbox, the T4 gets a smaller 39-tooth rear sprocket (the Speed 400 gets a 43-tooth rear sprocket), making the overall gearing taller. This means that for the same speeds in the same gears, the T4’s engine will be running at a lower rpm. 

Suspension, Brake And Other Details

There are differences in the hardware and dimensions of both bikes as well. The Triumph Speed T4’s suspension setup consists of a 43mm conventional telescopic fork with 140mm wheel travel and a gas-charged monoshock with 120mm wheel travel. The Speed 400, on the other hand, gets a 43mm inverted fork with 130mm wheel travel (10mm less travel than that of the Speed T4) and a gas-charged monoshock with 120mm wheel travel. As a result, the front fender mounts on both bikes are different as well. The braking setup is the same – a 300mm front disc brake and a 230mm rear disc brake, with dual-channel ABS. The difference being that the T4 gets an axial calliper at the front while the Speed 400 gets a radial calliper. 

The Speed T4 gets 110-section front and 140-section rear MRF Zapper-FX2 bias-ply tyres with 17-inch wheels at both ends. The Speed 400 gets 110-section front and 150-section rear radial tyres from Vredestein with 17-inch wheels at both ends. The tyre height on the T4 is a bit shorter than that of the Speed 400. The T4 has a seat height of 806mm (3mm more than the Speed 400), wheelbase of 1,406mm (20mm longer than the Speed 400), kerb weight of 180kg (1kg more than the Speed 400), ground clearance of 170mm (6mm more than the 400). Both bikes get a fuel tank capacity of 13 litres.  

Features

Both bikes get a semi-digital instrument console with an analogue speedometer and an LCD screen that shows tachometer, odometer, trip meter and other regular readouts. They also get all-LED lighting. Additionally, the Speed 400 gets switchable traction control, engine immobiliser and adjustable brake and clutch levers, all of which the T4 does not get. 

Price

The Triumph Speed T4 is priced at Rs 2,17,000 while the 2025 Speed 400 costs Rs 2,40,000, which is a difference of Rs 23,000 between the two bikes. The Speed T4 is an entirely different bike altogether and not just a cheaper version of the Speed 400. It is the most affordable Triumph motorcycle now and its addition to the 400cc lineup provides more options for potential customers while reducing the entry point of owning a Triumph motorcycle even more in the process.