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Triumph Rocket III

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Triumph Rocket III review

The Triumph Rocket III initially began as a project back in 1998. At that time, Triumph was trying to find a way to break into the American big cruiser market that was dominated by Harley-Davidson. After years of development, the Rocket III was launched in 2004, signifying a move by Triumph to become a major player in a segment that featured big bikes with big engines. Despite initially struggling to find its own niche, the Rocket III eventually settled in as a street fighter with the Rocket III Roadster eventually becoming the most powerful bike in the entire lineup.

Triumph Rocket III

Climb on the Rocket III, and there’s no way around it – it’s a beast of a bike. The engine looks like it’s been ripped from a small block muscle car and there’s no ignoring the mondo radiator bolted in front of the downtubes. Big pipes and bug-eyed lights, it is distinctively Triumph. The gargantuan 6.3-gallon gas tank is almost two feet wide and the bike tips the scales at just over 800 pounds ready-to-ride. Its size can be intimidating at first, but the more you ride the Rocket III Roadster the more comfortable you become with it.

Notice also how the Rocket III has twin headlamps that sit side-by-side from each other? That’s a trademark of the Rocket III. Same with the prevalent amount of chrome details throughout the bike that’s offset by blackened components, specifically the radiator cowls, the rear mudguard rails, the airbox cover, fork protectors, and mirrors. All these details were carefully added to give the Rocket III a menacing appearance, not that it needed to because it’s already pretty intimidating to look at on its own.

Triumph Rocket III specifications

General information
Model: Triumph Rocket
Category: Cruiser

Engine and transmission
Displacement: 2294ccm (139.98 cubic inches)
Engine type: In-line 3
Stroke: 4
Power: 142hp (103.6 kW) @5760RPM
Torque: 200Nm @2500RPM
Compression: 8.7:1
Bore x stroke: 101.6x94.3 mm (4.0 x 3.7 inches)
Fuel system: Injection. Multipoint sequential electronic fuel injection
Fuel control: DOHC
Ignition: Digital, via electronic engine management system
Starter: Electric
Cooling system: Liquid
Gearbox: 5-speed

Triumph Rocket III

Transmission type
final drive: Shaft drive (cardan)
Clutch: Wet, multi-plate

Physical measures
Dry weight: 320kg (705.5 pounds)
Seat height: 740 mm (29.1 inches) If adjustable, lowest setting.
Overall height: 1165 mm (45.9 inches)
Overall length: 2500mm
Overall width: 970mm
Wheelbase: 1695mm

Chassis and dimensions
Frame type: Tubular steel, twin spine
Front suspension: 43mm upside down forks
Rear suspension: Chromed spring twin shocks with adjustable preload
Front brakes: Single disc
Front brakes diameter: 320mm
Rear brakes: Single disc
Rear brakes diameter: 316mm
Power/weight ratio: 0.4438 HP/kg

Triumph Rocket III

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