| General |
| Year | 2023 | 2024 |
| Make Model | - | Triumph Speed 400 |
| Dimensions |
| Seat Height | - | 790 mm / 31.1 in |
| Wheelbase | 1488 mm / 58.6 in | 1377 mm / 54.2 in |
| Height | - | 1075 mm / 42.3 in |
| Length | - | 2056 mm / 80.9 in |
| Width | - | 795 mm / 31.3 in |
| Weights & Capacities |
| Wet Weight (kg) | 196.8 | 170 |
| Fuel Capacity | 17 Litres / 4.49 US gal | 13 Litres / 3.43 US gal |
| Wet Weight | 196.8 kg / 434 lbs | 170 kg / 375 lbs |
| Performance |
| Max Power | - | 29.4 kW / 40hp @ 8000 rpm |
| Max Torque | - | 38 Nm / 28 ft-lbs @ 6500 rpm |
| Engine |
| Displacement | - | 398 cc / 24.3 cu-in |
| Engine Detail | - | Four stroke, DOHC, single cylinder, 4 valves |
| Bore x Stroke | - | 89.0 x 64.0mm |
| Compression Ratio | - | 12.1:1 |
| Cooling System | - | Liquid cooled |
| Emissions | Euro 5 | Euro 5 |
| Exhaust | 4-2-1-2 system, with 2 catalytic converters and 2 lambda probes | - |
| Fuel Induction | - | Bosch ride-by-wire EFI |
| Starter | - | Electric |
| Drivetrain |
| Clutch | Hydraulically controlled slipper and self-servo wet multiplate clutch. Self bleeding master cylinder | Wet multiplate with assist and slip functions |
| Final Drive | Chain 525, Front sprocket 15, Rear sprocket 42 | X-ring chain |
| Gear Ratios | 1st 38/14 2nd 36/17 3rd 33/19 4th 32/21 5th 30/22 6th 30/24 | - |
| Primary Drive | Straight cut gears, Ratio 1.80:1 | - |
| Transmission / Drive | 6 Speed with Ducati Quick Shift (DQS) up/down EVO 2 | 6-Speed |
| Chassis |
| Frame Type | - | Hybrid spine/perimeter, tubular steel, bolt-on rear subframe |
| Suspension - Front | - | 43mm Showa Big Piston, non-adjustable inverted fork |
| Suspension - Rear | Fully adjustable Öhlins TTX36 unit. Electronic compression and rebound damping adjustment with Öhlins Smart EC 2.0 event-based mode. Aluminium single-sided swingarm | Single shock, fixed damping with the shock adjustable piggy-back reservior |
| Rake | - | 26.6° |
| Swingarm | - | Twin-sided, cast aluminium alloy |
| Trail | 100 mm / 3.94 in | 101.6 mm / 4 in |
| Wheel Travel - Front | 120 mm / 4.7 in | 139.7 mm / 5.5 in |
| Wheel Travel - Rear | 130 mm / 5.1 in | 129.4 mm / 5.1 in |
| Electronics |
| Equipment / Features | Ducati Power Launch (DPL), Ducati Quick Shift (DQS) up/down EVO 2, Full LED lighting with Daytime Running Light (DRL), Ducati Electronic Suspension (DES) EVO with Ohlins suspension and steering damper, Quick adjustment buttons, Auto-off indicators, Marchesini aluminum forged wheels, Lithium-ion battery, Passenger seat cover | Passenger seat and footpegs | - |
| Safety Equipment | Riding Modes, Power Modes, Cornering ABS EVO, Ducati Traction Control (DTC) EVO 2, Ducati Wheelie Control (DWC) EVO, Ducati Slide Control (DSC), Engine Brake Control (EBC) EVO 2, Auto tire calibration | - |
| Electrical Systems |
| Instrumentation | - | Analogue speedometer with integrated multi-function LCD screen |
| Wheels & Brakes |
| Brakes - Front | - | Single 300 mm disc with radially mounted 4-piston caliper |
| Brakes - Rear | Single 245 mm disc, 2-piston calliper | Single 230 mm disc with floating caliper |
| ABS | Cornering ABS EVO | Bosch dual channel |
| Rims - Front | 3.50 x 17 | - |
| Rims - Rear | 6.00 x 17 | - |
| Tyres - Front | - | 110/70 x R17 |
| Tyres - Rear | - | 150/60 x R17 |
| Wheels | 3-spokes forged | - |
| Wheels - Front | - | 17 x 3 in with 10-spoke cast aluminium alloy rims |
| Wheels - Rear | - | 17 x 4 in with 10-spoke cast aluminium alloy rims |