2010 Triumph Rocket III Roadster Specifications

Name: 2010 Triumph Rocket III Roadster
Brand: Triumph

Custom / cruiser • Specs last verified 13 July 2026

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2010 Triumph Rocket III Roadster Overview

The 2010 Triumph Rocket III Roadster is a custom / cruiser motorcycle built around 2294 cc of displacement. Under the tank sits a Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder engine, a compression ratio of 8.7:1. 2010 Triumph Rocket III Roadster delivers 109 kW 146 hp @ 5750rpm of peak power and 221Nm @ 2750rpm of torque. From a practical standpoint, the 2010 Rocket III Roadster tips the scales at 367 kg, carries a 24-litre fuel tank, offers a seat height of 750 mm and spans a 1695 mm wheelbase. That's roughly 86.3 kg heavier than the average custom / cruiser motorcycle in our database. Scroll down for the complete 2010 Triumph Rocket III Roadster spec sheet covering every technical detail from suspension travel to tyre sizes.

2010 Triumph Rocket III Roadster compared with other bikes in the Custom / cruiser category

Here is how the 2010 Triumph Rocket III Roadster stacks up against other bikes in the Custom / cruiser category in our database. Each model counts once, using the model year closest to this one, and the comparison covers up to 1569 models.

Torque of 221 Nm is higher than that of 1035 of the other 1052 bikes in the Custom / cruiser category.
Only 15 of the other 1568 bikes in the Custom / cruiser category have a larger engine displacement than the 2294 cc of the Rocket III Roadster.
With 109 kW, the Rocket III Roadster has the 51st highest power output of 615 bikes in the Custom / cruiser category, 85% above the category average of 58.8 kW.
Narrowing the field to the 540 models within five model years of it, the torque of 221 Nm is higher than that of 536 of the other 539.

2010 Rocket III Roadster - Pros & Cons

Strengths

Strong power output: 2010 Triumph Rocket III Roadster makes 109 kW 146 hp @ 5750rpm with 221Nm @ 2750rpm of torque - competitive figures for its class.
Fuel injection: The Multipoint sequential electronic fuel injection system delivers crisp throttle response and reliable cold starts regardless of altitude or temperature.
Strong front braking: The disc front brake gives excellent stopping power and responds well to aftermarket braided lines.
Accessible seat height: At 750 mm, the seat height is approachable for a wide range of rider heights and builds confidence in low-speed manoeuvring.
Large fuel range: The 24-litre tank is generously sized, translating to extended range between stops - ideal for touring or longer commutes.
Low-maintenance final drive: Shaft final drive means no chain to clean, lube or adjust - meaningfully less routine maintenance than a chain-driven equivalent.

Considerations

Age-related wear: As with any used Rocket III Roadster, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.

Wear Points & Servicing Notes

Cooling system servicing

The Liquid cooled system on the Rocket III Roadster needs a coolant change roughly every two years (or per the service schedule) - skipping it lets the coolant turn acidic and corrode the aluminium water passages over time.

Fuelling & injector care

Fuelling comes from Multipoint sequential electronic fuel injection. Systems like this are largely maintenance-free beyond keeping fuel quality decent and injectors clear - a fuel-system cleaner every service interval is cheap insurance.

Brake disc and pad wear

The disc front brake gives strong, progressive stopping power. Disc thickness and pad depth are worth checking at every tyre change, since worn pads can score the disc surface.

Suspension condition on used examples

Up front, the Rocket III Roadster runs Kayaba 43 mm upside down forks and Kayaba black spring twin shocks with 5 position adjustable preload at the rear. On a used example, check fork seals for weeping oil and test the rear linkage for play - seals are a relatively cheap fix but useful when negotiating price.

Final drive maintenance

Final drive is by shaft - no chain or belt maintenance at all, though the drive-shaft oil should be changed on the manufacturer's interval.

Frame & chassis check

The frame is Tubular steel, twin spine - worth a visual check for corrosion or impact damage around the head-stock and swingarm pivot on any used example, since frame damage is far costlier to fix than any service item.

Handling the weight at a standstill

At 367 kg, the Rocket III Roadster is a substantial machine - low-speed manoeuvring in car parks takes more physical effort than on a lighter bike, though the weight disappears once rolling.

Rocket III Roadster - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2010 Triumph Rocket III Roadster with its 2294 cc custom / cruiser, start with the basics: check the service book for oil change frequency, inspect the drivetrain for wear, and look for oil seepage around the engine casings and rocker covers. This model runs shaft final drive, so ask for proof the shaft-drive gear oil has been changed on schedule - it's easy to overlook since there's no chain to draw attention to it. Now 16 years old, this custom / cruiser is as likely to show age-related wear (perished rubber, seized fasteners, degraded seals) as mileage-related wear. A cold start test is invaluable - a well-maintained Rocket III Roadster should fire up cleanly and settle to a smooth idle within a few seconds.

Oil and filter changes

Regular oil changes are the single most important maintenance task for the Rocket III Roadster's 2294 cc four stroke, longitudinal three cylinder, dohc, 4 valves per cylinder.. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. With an 8.7:1 compression ratio, running the octane grade specified in the manual matters more than on a lower-compression engine. Always use the correct viscosity grade as specified in the owner's manual.

Fuel system care

The Rocket III Roadster's fuel injection system is durable but benefits from quality fuel and the occasional use of a fuel-system cleaner additive. If the bike has been stored for more than three months, drain and replace the fuel to prevent varnish deposits in the injectors.

2010 Triumph Rocket III Roadster - Frequently Asked Questions

What engine does the 2010 Triumph Rocket III Roadster have?

The 2010 Triumph Rocket III Roadster uses a Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder. engine with 2294 cc of displacement. It is liquid cooled.

How much does the 2010 Triumph Rocket III Roadster weigh?

The 2010 Triumph Rocket III Roadster weighs 367 kg. This is the manufacturer's wet figure.

How much power does the 2010 Triumph Rocket III Roadster make?

The 2010 Triumph Rocket III Roadster produces 109 kW 146 hp @ 5750rpm of power and 221Nm @ 2750rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2010 Triumph Rocket III Roadster?

The 2010 Triumph Rocket III Roadster has a 24-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 400-480 km between stops.

Is the 2010 Triumph Rocket III Roadster suitable for shorter riders?

The 2010 Triumph Rocket III Roadster has a seat height of 750 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2010 Triumph Rocket III Roadster have?

The 2010 Triumph Rocket III Roadster uses 2 x 320 mm Discs, 4 piston calipers at the front and single 316 mm disc, 2 piston caliper at the rear.

What tyre sizes does the 2010 Triumph Rocket III Roadster use?

The 2010 Triumph Rocket III Roadster runs 150/80 V17 front and 250/50 V16 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2010 Triumph Rocket III Roadster have?

The 2010 Triumph Rocket III Roadster is fitted with a 5 Speed, constant mesh transmission.

Triumph Rocket III Roadster Spec Evolution

The Triumph Rocket III Roadster was produced across 7 model years (2010-2019). The table below highlights the key specifications that changed across the production run - useful whether you are comparing years or tracking down a specific variant.

Specification	2010	2011	2012	2013	2014	2016	2019
Max Power	109 kW 146 hp @ 5750rpm	109 kW 146 hp @ 5750rpm	109 kW 146 hp @ 5750rpm	109 kW 146 hp @ 5750rpm	109 kW 146 hp @ 5750rpm	109 kW / 146 hp @ 5750 rpm	109 kW / 146 hp @ 5750 rpm
Engine Detail	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.	Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.	Four stroke, 3-cylinder, DOHC	Four stroke, 3-cylinder, DOHC
Fuel Capacity	24 Litres / 6.3 US gal / 5.3 Imp gal	24 Litres / 6.3 US gal / 5.3 Imp gal	24 Litres / 6.3 US gal / 5.3 Imp gal	24 Litres / 6.3 US gal / 5.3 Imp gal	24 Litres / 6.3 US gal / 5.3 Imp gal	24 Litres / 6.3 US gal	24 Litres / 6.3 US gal
Frame Type	Tubular steel, twin spine	Tubular steel, twin spine	Tubular steel, twin spine	Tubular steel, twin spine	Tubular steel, twin spine	Tubular steel, twin spine, swingarm twin-sided, steel	Tubular steel, twin spine, swingarm twin-sided, steel
Displacement	2294 cc / 140 cu in	2294 cc / 140 cu in	2294 cc / 140 cu in	2294 cc / 140 cu in	2294 cc / 140 cu in	2294 cc / 140 cub in	2294 cc / 140 cub in
Brakes - Front	2 x 320 mm Discs, 4 piston calipers	2 x 320 mm Discs, 4 piston calipers	2 x 320 mm Discs, 4 piston calipers	2 x 320 mm Discs, 4 piston calipers, Nissen, ABS	2 x 320 mm Discs, 4 piston calipers	2 x 320 mm Floating discs, Nissin 4-piston fixed caliper, ABS	2 x 320 mm Floating discs, Nissin 4-piston fixed caliper, ABS
Brakes - Rear	Single 316 mm disc, 2 piston caliper	Single 316 mm disc, 2 piston caliper	Single 316 mm disc, 2 piston caliper	Single 316 mm disc, 2 piston caliper, Nissen, ABS	Single 316 mm disc, 2 piston caliper	Single 316 mm disc, Brembo 2 piston floating caliper, ABS	Single 316 mm disc, Brembo 2 piston floating caliper, ABS
Suspension - Front	Kayaba 43 mm upside down forks	Kayaba 43 mm upside down forks	Kayaba 43 mm upside down forks	Kayaba 43 mm upside down forks	Kayaba 43 mm upside down forks	Kayaba 43mm upside down forks	Kayaba 43mm upside down forks

Key Specifications

Engine

Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.

Power

109 kW 146 hp @ 5750rpm

Torque

221Nm / 22.5 kgf-m / 163 ft.lbs @ 2750rpm

Top Speed

Not recorded

Weight

367 kg / 807 lbs

Fuel Capacity

24 Litres / 6.3 US gal / 5.3 Imp gal

Full 2010 Triumph Rocket III Roadster Specifications

Year 2010

Make Model Triumph Rocket III Roadster

Seat Height 750 mm / 29.5 in

Wheelbase 1695 mm / 66.7 in

Height 1165 mm / 45.8 in

Length 2500 mm / 98.3 in

Width 970 mm / 38.2 in (Handlebars)

Dry Weight 320 kg / 704 lbs

Fuel Capacity 24 Litres / 6.3 US gal / 5.3 Imp gal

Wet Weight 367 kg / 807 lbs

Max Power 109 kW 146 hp @ 5750rpm

Max Torque 221Nm / 22.5 kgf-m / 163 ft.lbs @ 2750rpm

Displacement 2294 cc / 140 cu in

Engine Detail Four stroke, longitudinal three cylinder, DOHC, 4 valves per cylinder.

Bore x Stroke 101.6 x 94.3 mm

Compression Ratio 8.7:1

Cooling System Liquid cooled

Fuel Induction Multipoint sequential electronic fuel injection

Ignition Digital inductive type via electronic engine management

Starter Electric

Clutch Wet, multi-plate

Final Drive Shaft

Gear Ratios 1st: 41/14 / 2nd: 37/19 / 3rd: 33/23 / 4th: 29/25 / 5th: 27/28

Transmission / Drive 5 Speed, constant mesh

Frame Type Tubular steel, twin spine

Suspension - Front Kayaba 43 mm upside down forks

Suspension - Rear Kayaba black spring twin shocks with 5 position adjustable preload

Rake 32°

Trail 148 mm / 5.8 in

Wheel Travel - Front 120 mm / 4.7 in

Wheel Travel - Rear 105 mm / 4.1 in

Brakes - Front 2 x 320 mm Discs, 4 piston calipers

Brakes - Rear Single 316 mm disc, 2 piston caliper

Tyres - Front 150/80 V17

Tyres - Rear 250/50 V16

Wheels - Front Alloy 5-spoke, 17 x 3.5in

Wheels - Rear Alloy 5-spoke, 16 x 7.5in

Specifications are compiled from manufacturer documentation and cross-referenced technical sources, and corrected on an ongoing basis. Spot an error? Let us know.