| MODEL | TRIUMPH BONNEVILLE T40 AND T40 BLACK 2027 |
| Year | 2027 |
| Engine Type | 4-stroke, single cylinder, DOHC, 4 valves |
| Displacement / Capacity | 398 cc / 24.3 cu in |
| Bore X Stroke | 89.0 x 64.0 mm |
| Compression Ratio | 12.0:1 |
| Cooling System | Liquid cooled |
| Max Power | 22.8 kW / 30 hp @ 7000 rpm |
| Max Torque | 36 Nm / 26.6 lb-ft @ 5000 rpm |
| Ignition | — |
| Induction | Bosch electronic fuel injection with electronic throttle control |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 6-speed |
| Clutch | Wet, multi-plate, assist and slip |
| Final Drive | X-ring chain |
| CHASSIS SPECS | |
| Frame | Hybrid spine/perimeter, tubular steel, bolt-on rear subframe |
| Front Suspension | 43 mm telescopic fork, 130 mm / 5.1 in travel |
| Rear Suspension | Twin shocks, preload adjustable, 130 mm / 5.1 in travel |
| Front Brakes | Single 310 mm fixed disc, twin-piston axial caliper, ABS |
| Rear Brakes | Single 255 mm fixed disc, single floating caliper, ABS |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | 818 mm / 32.2 in |
| Overall Height | 1081 mm / 42.6 in |
| Seat Height | 790 mm / 31.1 in |
| Wheelbase | 1418 mm / 55.8 in |
| Ground Clearance | — |
| Dry Weight | — |
| Wet Weight | 191 kg / 421 lbs |
| WHEEL SPECS | |
| Front Tyre | 100/90 R18 |
| Rear Tyre | 150/70 R17 |
| FUEL SYSTEM | |
| Fuel Capacity | 14.5 Litres / 3.8 US gal |
| Fuel Consumption | — |
| Top Speed | — |
The T40 and its blacked-out T40 Black variant are Bonneville-styled additions to Triumph's 400 cc single-cylinder range. They pair a modern liquid-cooled single with spoked wheels, twin rear shocks and a round TFT display with navigation. Cruise control and cornering-aware ABS and traction control are fitted, and the bike is A2-licence friendly.
