2026 Triumph Speed 400

Description

The 2026 Triumph Speed 400 is a modern-classic roadster that distills Triumph’s style, build quality, and rideability into a compact, accessible package. With a 398cc single-cylinder engine, nimble handling, and premium components, it’s a perfect entry for new riders — without compromising on the soul or finesse that Triumph is known for. New for 2026 are fresh color options, while the core engineering remains sharp, balanced, and ready to ride.

Features

398cc Single-Cylinder Engine — Liquid-cooled, 4-valve DOHC unit producing 39.5 hp @ 8,000 rpm and 27.7 lb-ft @ 6,500 rpm. 

High-Spec Chassis & Suspension — 43mm Big Piston inverted front forks, rear mono-shock with preload adjustment, and a hybrid spine/perimeter steel frame. 

Premium Braking & Safety — 300mm front disc with 4-piston radial caliper and 230mm rear disc with ABS; braided brake lines for sharp lever feel.

Classic Styling — Iconic Triumph silhouette, stripped-back custom cues, ten-spoke cast-aluminum wheels, and refined finishes that echo Triumph’s heritage. 

Rider-Focused Controls — Analogue speedometer with integrated multi-function LCD, ride-by-wire throttle, traction control, and a torque-assist slip & assist clutch. 

Technical Specifications

Type: Liquid-cooled, 4-valve, DOHC, single-cylinder
Displacement: 398.15 cc 
Bore × Stroke: 89.0 mm × 64.0 mm
Compression Ratio: 12:1
Max Power: 39.5 hp (40 PS) @ 8,000 rpm
Max Torque: 27.7 lb-ft @ 6,500 rpm
Clutch: Wet multi-plate, slip & assist
Gearbox: 6-speed 
Frame: Hybrid spine/perimeter, tubular steel with bolt-on rear subframe
Swingarm: Twin-sided cast aluminum alloy 
Front Suspension: 43mm Big Piston inverted forks, 140 mm travel 
Rear Suspension: Gas monoshock RSU with external reservoir, preload adjustable, 130 mm travel
Front Brake: 300 mm fixed disc, 4-piston radial caliper, ABS 
Rear Brake: 230 mm fixed disc, floating caliper, ABS
Front Wheel: 17 × 3 in cast aluminum, 110/70 R17 tire 
Rear Wheel: 17 × 4 in cast aluminum, 150/60 R17 tire 
Seat Height: 31.1 in (790 mm) 
Wheelbase: 54.21 in (1,377 mm) 
Fuel Tank Capacity: 3.43 US gal (13 L) 
Wet Weight: 375 lb (170 kg)