2020 Triumph Rocket 3 GT Specifications

Name: 2020 Triumph Rocket 3 GT
Brand: Triumph

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2020 Triumph Rocket 3 GT Overview

The 2020 Triumph Rocket 3 GT is a custom / cruiser motorcycle built around 2458 cc of displacement. Under the tank sits a Four stroke, inline 3-cylinder, DOHC engine, a compression ratio of 10.8:1. 2020 Triumph Rocket 3 GT delivers 123 kW @ 6000 rpm of peak power and 221 Nm @ 4000 rpm of torque. From a practical standpoint, the 2020 Rocket 3 GT tips the scales at 294 kg, carries a 18-litre fuel tank, offers a seat height of 750 mm and spans a 1677 mm wheelbase. Scroll down for the complete 2020 Triumph Rocket 3 GT spec sheet covering every technical detail from suspension travel to tyre sizes.

2020 Rocket 3 GT - Pros & Cons

Strengths

Strong power output: 2020 Triumph Rocket 3 GT makes 123 kW @ 6000 rpm with 221 Nm @ 4000 rpm of torque - competitive figures for its class.
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 18-litre tank is generously sized, translating to extended range between stops - ideal for touring or longer commutes.

Considerations

Age-related wear: As with any used Rocket 3 GT, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.

Owner Experiences & Common Issues

Low-speed confidence

At 294 kg, the Rocket 3 GT is a substantial machine. New owners occasionally mention that slow-speed manoeuvring in car parks takes a little getting used to. Once moving, the weight disappears - but practising slow-speed exercises builds confidence quickly.

Rocket 3 GT - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2020 Triumph Rocket 3 GT, start with the basics: check the service book for oil change frequency, inspect the chain and sprockets for wear, and look for oil seepage around the engine casings and rocker covers. A cold start test is invaluable - a well-maintained Rocket 3 GT 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 on any Rocket 3 GT. Stick to the manufacturer's interval - typically every 6,000 km or once a year, whichever comes first. Always use the correct viscosity grade as specified in the owner's manual.

2020 Triumph Rocket 3 GT - Frequently Asked Questions

What engine does the 2020 Triumph Rocket 3 GT have?

The 2020 Triumph Rocket 3 GT uses a Four stroke, inline 3-cylinder, DOHC engine with 2458 cc of displacement. It is liquid cooled.

How much does the 2020 Triumph Rocket 3 GT weigh?

The 2020 Triumph Rocket 3 GT weighs 294 kg. This is the manufacturer's dry figure.

How much power does the 2020 Triumph Rocket 3 GT make?

The 2020 Triumph Rocket 3 GT produces 123 kW @ 6000 rpm of power and 221 Nm @ 4000 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2020 Triumph Rocket 3 GT?

The 2020 Triumph Rocket 3 GT has a 18-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 300-360 km between stops.

Is the 2020 Triumph Rocket 3 GT suitable for shorter riders?

The 2020 Triumph Rocket 3 GT has a seat height of 750 mm. This is a comfortable, accessible height for most riders.

What brakes does the 2020 Triumph Rocket 3 GT have?

The 2020 Triumph Rocket 3 GT uses 2x 320 mm discs w/ Brembo M4.30 Stylema 4-piston radial monobloc calipers, Cornering ABS at the front and Single 300mm disc, Brembo M4.32 4-piston monobloc caliper, Cornering ABS at the rear.

What tyre sizes does the 2020 Triumph Rocket 3 GT use?

The 2020 Triumph Rocket 3 GT runs 150/80 R17 V front and 240/50 R16 V rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2020 Triumph Rocket 3 GT have?

The 2020 Triumph Rocket 3 GT is fitted with a 6 Speed transmission.

Triumph Rocket 3 GT Spec Evolution

The Triumph Rocket 3 GT was produced across 2 model years (2020-2024). 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	2020	2024
Max Power	123 kW / 167 PS / 165 hp @ 6000 rpm	134 kW / 180 hp @ 7000 rpm
Seat Height	750 mm / 29.7 in	750 mm / 29.5 in
Fuel Capacity	18 Litres / 4.7 US gal	18 Litres / 4.76 US gal
Displacement	2458 cc / 150 cub in	2458 cc / 150 cu-in
Brakes - Front	2x 320 mm discs w/ Brembo M4.30 Stylema 4-piston radial monobloc calipers, Cornering ABS	2x 320 mm discs with Brembo M4.30 Stylema 4-piston radial monobloc calipers
Brakes - Rear	Single 300mm disc, Brembo M4.32 4-piston monobloc caliper, Cornering ABS	Single 300mm disc, Brembo M4.32 4-piston monobloc caliper
Suspension - Front	Showa 47mm upside-down 1+1 cartridge front forks, compression and rebound adjuster.	Showa 47mm upside-down 1+1 cartridge front forks, compression and rebound adjustement
Suspension - Rear	Fully adjustable Showa piggyback reservoir RSU with remote hydraulic preload adjuster	Fully adjustable Showa piggyback reservoir RSU with remote hydraulic preload adjustement