The Speed 400 brings Triumph’s unmistakeable stripped back custom style, agile handling, responsive performance and category-defining build quality to a new class of rider.
| Engine Type | Liquid-cooled, 4 valve, DOHC, single-cylinder |
| Capacity | 398.15 cc |
| Bore | 3.5 in |
| Stroke | 2.5 in |
| Compression | 12:1 |
| Max Power | 29.4 kW / 8000 rpm |
| Max Torque | 27.7 ft-lb / 6500 rpm |
| System | Bosch electronic fuel injection with electronic throttle control |
| Exhaust | Stainless twin-skin header system with stainless steel silencer |
| Final Drive | X-ring chain |
| Clutch | Wet, multi-plate, slip |
| Gearbox | 6 speed |
| Frame | Hybrid spine/perimeter, tubular steel, bolt-on rear subframe |
| Swingarm | Twin-sided, cast aluminium alloy |
| Front Wheel | Cast aluminium alloy 10 spoke, 17 x 3 in |
| Rear Wheel | Cast aluminium alloy 10 spoke, 17 x 4 in |
| Front Tyre | 110/70 R17 |
| Rear Tyre | 150/60 R17 |
| 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 |
| Front Brake | 300mm flixed disc, four-piston radial caliper, ABS |
| Rear Brake | 230mm fixed disc, floating caliper, ABS |
| Width Handlebars | 31.3 in |
| Height Without Mirror | 42.3 in |
| Seat Height | 31.1 in |
| Wheelbase | 54.2 in |
| Rake | 24.6 º |
| Trail | 4 in |
| Tank Capacity | 3.4 gal |
| Wet Weight | 170 kg |
| Phantom Black / Storm Grey |
| Caspian Blue / Storm Grey |
| Carnival Red / Phantom Black |