| MODEL | TRIUMPH SPEEDMASTER ROADSTER 2005 - 2006 |
| Year | 2005 - 2006 |
| Engine Type | Four-stroke, parallel twin, DOHC, 4 valves per cylinder |
| Displacement / Capacity | 865 cc / 52.8 cu in |
| Bore X Stroke | 90 x 68 mm |
| Compression Ratio | 9.2:1 |
| Cooling System | Air cooled |
| Max Power | 40.3 kW / 54 hp @ 6750 rpm |
| Max Torque | 69 Nm / 51 lb-ft @ 4800 rpm |
| Ignition | Digital inductive |
| Induction | 2 x carburettors with throttle position sensor and electric carburettor heaters |
| Start System | Electric |
| TRANSMISSION SPECS | |
| Lubrication | — |
| Gear Box | 5 speed |
| Clutch | Wet, multi-plate |
| Final Drive | Chain |
| CHASSIS SPECS | |
| Frame | Tubular steel cradle; twin-sided tubular steel swingarm |
| Front Suspension | 41 mm telescopic forks |
| Rear Suspension | Chromed spring twin shocks with adjustable preload |
| Front Brakes | 2 x 310 mm discs, 2-piston calipers |
| Rear Brakes | Single 285 mm disc, 2-piston caliper |
| DIMENSION SPECS | |
| Overall Length | — |
| Overall Width | — |
| Overall Height | — |
| Seat Height | 719 mm / 28.3 in |
| Wheelbase | — |
| Ground Clearance | — |
| Dry Weight | 229 kg / 504 lbs |
| Wet Weight | — |
| WHEEL SPECS | |
| Front Tyre | 110/80-18 |
| Rear Tyre | 170/80-15 |
| FUEL SYSTEM | |
| Fuel Capacity | 16.6 Litres / 4.4 US gal |
| Fuel Consumption | — |
| Top Speed | — |
For 2005 the Speedmaster's twin grew from 790 to 865 cc, adding low-down torque while keeping carburettors. Styling stayed retro street-rod with chrome pipes and a five-spoke front wheel. Its main weakness was a firm, bump-sensitive rear end.
