2021 Triumph Street Triple RS Specifications

Name: 2021 Triumph Street Triple RS
Brand: Triumph

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2021 Triumph Street Triple RS Overview

The 2021 Triumph Street Triple RS is a sport motorcycle built around 765 cc of displacement. Under the tank sits a Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder engine, a compression ratio of 12.54:1. 2021 Triumph Street Triple RS delivers 121.3 hp @ 11,750 rpm of peak power and 79 Nm @ 9,350 rpm of torque. From a practical standpoint, the 2021 Street Triple RS tips the scales at 166 kg, carries a 17.4-litre fuel tank, offers a seat height of 825 mm and spans a 1405 mm wheelbase. Scroll down for the complete 2021 Triumph Street Triple RS spec sheet covering every technical detail from suspension travel to tyre sizes.

2021 Street Triple RS - Pros & Cons

Strengths

Strong power output: 2021 Triumph Street Triple RS makes 121.3 hp @ 11,750 rpm with 79 Nm @ 9,350 rpm of torque - competitive figures for its class.

Considerations

Tall seat height: The 825 mm seat height will challenge shorter riders - tiptoeing at low speeds is something to factor into your decision.

Owner Experiences & Common Issues

General ownership notes

The 2021 Triumph Street Triple RS has built a reputation for solid everyday reliability when serviced to schedule. As with any motorcycle of this era, documented service history is the single biggest indicator of long-term reliability when buying used.

Street Triple RS - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2021 Triumph Street Triple RS, 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 Street Triple RS 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 Street Triple RS. 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.

2021 Triumph Street Triple RS - Frequently Asked Questions

What engine does the 2021 Triumph Street Triple RS have?

The 2021 Triumph Street Triple RS uses a Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder engine with 765 cc of displacement. It is liquid-cooled.

How much does the 2021 Triumph Street Triple RS weigh?

The 2021 Triumph Street Triple RS weighs 166 kg. This is the manufacturer's dry figure.

How much power does the 2021 Triumph Street Triple RS make?

The 2021 Triumph Street Triple RS produces 121.3 hp @ 11,750 rpm of power and 79 Nm @ 9,350 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2021 Triumph Street Triple RS?

The 2021 Triumph Street Triple RS has a 17.4-litre fuel tank.

Is the 2021 Triumph Street Triple RS suitable for shorter riders?

The 2021 Triumph Street Triple RS has a seat height of 825 mm. This is towards the tall end of the spectrum and will require most riders under 175 cm to tiptoe at stops.

What brakes does the 2021 Triumph Street Triple RS have?

The 2021 Triumph Street Triple RS uses 2 x 310mm floating discs, Brembo M50 4-piston monobloc calipers at the front and Single 220mm disc, Brembo single-piston caliper at the rear.

What tyre sizes does the 2021 Triumph Street Triple RS use?

The 2021 Triumph Street Triple RS runs 120/70 ZR17 Pirelli Diablo Supercorsa SP V3 front and 180/55 ZR17 Pirelli Diablo Supercorsa SP V3 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2021 Triumph Street Triple RS have?

The 2021 Triumph Street Triple RS is fitted with a 6 Speed with Triumph Shift Assist transmission.

Triumph Street Triple RS Spec Evolution

The Triumph Street Triple RS was produced across 4 model years (2020-2023). 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	2021	2022	2023
Max Power	121.3 hp / 123 PS / 90 kW @ 11,750 rpm	121.3 hp / 123 PS / 90 kW @ 11,750 rpm	121.3 hp / 90 kW @ 11750 rpm	128.2 hp / 95.6 kW @ 12000 rpm
Dry Weight	166 kg / 366 lbs	166 kg / 366 lbs	168 kg / 370.3 lbs	-
Engine Detail	Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder	Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder	Four stroke, in-line 3-cylinder, DOHC, 4 valve per cylinder	Four stroke, In-line 3-cylinder, DOHC, 4 valve per cylinder
Seat Height	825 mm / 32.5 in	825 mm / 32.5 in	825 mm / 32.5 in	836 mm / 32.9 in
Fuel Capacity	17.4 Litres / 4.6 US gal / 3.8 Imp gal	17.4 Litres / 4.6 US gal / 3.8 Imp gal	17.4 Litres / 4.6 US gal	15 Litres / 309 US gal
Frame Type	Front - Aluminum beam twin spar Rear - 2 piece high pressure die cast	Front - Aluminum beam twin spar Rear - 2 piece high pressure die cast	Front - Aluminum beam twin spar Rear - 2 piece high pressure die cast	Aluminium beam twin spar frame with 2 piece high pressure die cast rear subframe
Wheelbase	1405 mm / 55.3 in	1405 mm / 55.3 in	1405 mm / 55.3 in	1399 mm / 55.0 in
Brakes - Front	2 x 310mm floating discs, Brembo M50 4-piston monobloc calipers	2 x 310mm floating discs, Brembo M50 4-piston monobloc calipers	2 x 310mm floating discs, Brembo M50 4-piston radial monoblock calipers	2 x 310 mm floating discs, Brembo Stylema 4-piston radial monobloc calipers, OC-ABS, Brembo MCS radial master cylinder