22 June. Monday 2026
Triumph Rocket III Roadster - 2012 Specifications and Reviews
The 2012 Triumph Rocket III Roadster is a heavyweight cruiser powered by an exceptional 2294cc triple-cylinder engine delivering 148 horsepower and 221 Nm of torque, making it ideal for riders seeking raw power and commanding presence. Known for its unique three-cylinder character and shaft-driven reliability, this muscle cruiser excels at both highway cruising and commanding attention. Its responsive engine and composed handling make it approachable for experienced riders despite its imposing specifications.
General information | |
| Category | Custom / cruiser |
| Year | 2012 |
| Model | Triumph Rocket III Roadster |
| | |
Engine and Transmission Specifications | |
| Exhaust system | Stainless steel 3 into 1 into 2. large volume catalysts in front of chrome-plated exhaust |
| Greenhouse gases | 188.2 CO |
| Fuel consumption | 8.11 litres/100 km (12.3 km/l or 29.00 mpg) |
| Clutch | Wet. multi-plate |
| Transmission type,final drive | Shaft drive (cardan) |
| Gearbox | 5-speed |
| Cooling system | Liquid |
| Ignition | Digital-inductive type via engine management system |
| Fuel control | DOHC |
| Fuel system | Injection. Multipoint sequential electronic fuel injection with twin butterflies and progressive linkage on primary butterflies |
| Bore x stroke | 101.6 x 101.6 mm (4.0 x 4.0 inches) |
| Compression | 8.7:1 |
| Torque | 221.00 Nm (22.5 kgf-m or 163.0 ft.lbs) @ 2750 |
| Power | 148.00 |
| Engine type | In-line three, four-stroke |
| Capacity: | 2294.00 ccm (139.98 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | Cast aluminum alloy 5 spoke |
| Rear brakes diameter | 316 mm (12.4 inches) |
| Rear brakes | Single disc. Nissin 4-piston fixed calipers, Nissin ABS system. |
| Front brakes diameter | 320 mm (12.6 inches) |
| Front brakes | Double disc. Nissin 4-piston fixed calipers, Nissin ABS system. |
| Rear tyre dimensions | 240/50-R16 |
| Front tyre dimensions | 150/80-R17 |
| Rear suspension | Kayaba black spring twin shocks with 5 position adjustable preload. 105mm wheel travel |
| Front suspension | Kayaba 43mm upside down forks. 120mm travel |
| Rake (fork angle) | 32.0° |
| Frame type | Tubular steel. twin spine |
Physical measures and capacities | |
| Oil capacity | 5.90 litres (0.39 quarts) |
| Fuel capacity | 24.00 litres (6.34 gallons) |
| Wheelbase | 1,695 mm (66.7 inches) |
| Overall width | 970 mm (38.2 inches) |
| Overall length | 2,500 mm (98.4 inches) |
| Overall height | 1,165 mm (45.9 inches) |
| Seat height | 750 mm (29.5 inches) If adjustable, lowest setting. |
| Weight incl. oil, gas, etc | 367.0 kg (809.1 pounds) |
Other specs | |
| Comments | 4W/2WD. Automatic Transmission with Hi/Lo Range and Reverse. Slip Limited Front Differential. DC 12V 10A 120W electric outlet. Made in Taiwan. |
| Wheelbase | 1,280 mm (50.4 inches) |
| Power/weight ratio | 0.0541 HP/kg |
| Dry weight | 364.0 kg (802.5 pounds) |
| Rear tyre | 25/10-12 |
| Front tyre | 25/8-12 |
| Rear Suspension | Double AArm |
| Front Suspension | Double AArm |
| Driveline | 4x4. Gear Selection L/H/N/R. CVT Automatic. |
| Bore x Stroke | 92.0 x 76.5 mm (3.6 x 3.0 inches) |
| Compression | 9.9:1 |
| Torque | 27.50 Nm (2.8 kgf-m or 20.3 ft.lbs) @ 3500 Revolutions">RPM |
| Capacity: | 503.00 ccm (30.69 cubic inches) |
| Color options | Phantom Black |
| Starter | Electric |
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