2021 Aprilia RS 660 Specifications

Name: 2021 Aprilia RS 660
Brand: Aprilia

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2021 Aprilia RS 660 Overview

The 2021 Aprilia RS 660 is a sport motorcycle built around 659 cc of displacement. Under the tank sits a Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder engine, a compression ratio of 13.5: 1. 2021 Aprilia RS 660 delivers 100 hp @ 10,500 rpm of peak power and 67 Nm @ 8,500 rpm of torque. From a practical standpoint, the 2021 RS 660 tips the scales at 183 kg, carries a 15-litre fuel tank, offers a seat height of 815 mm and spans a 1370 mm wheelbase. Scroll down for the complete 2021 Aprilia RS 660 spec sheet covering every technical detail from suspension travel to tyre sizes.

2021 RS 660 - Pros & Cons

Strengths

Strong power output: 2021 Aprilia RS 660 makes 100 hp @ 10,500 rpm with 67 Nm @ 8,500 rpm of torque - competitive figures for its class.

Considerations

Age-related wear: As with any used RS 660, a thorough pre-purchase inspection covering consumables, service history and tyres is always recommended.

Owner Experiences & Common Issues

General ownership notes

The 2021 Aprilia RS 660 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.

RS 660 - Buying & Maintenance Guide

What to check before buying

When inspecting a used 2021 Aprilia RS 660, 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 RS 660 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 RS 660. 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 Aprilia RS 660 - Frequently Asked Questions

What engine does the 2021 Aprilia RS 660 have?

The 2021 Aprilia RS 660 uses a Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder engine with 659 cc of displacement. It is liquid cooled with radiator and water-oil heat exchanger.

How much does the 2021 Aprilia RS 660 weigh?

The 2021 Aprilia RS 660 weighs 183 kg. This is the manufacturer's wet figure.

How much power does the 2021 Aprilia RS 660 make?

The 2021 Aprilia RS 660 produces 100 hp @ 10,500 rpm of power and 67 Nm @ 8,500 rpm of torque. These are peak figures.

What is the fuel tank capacity of the 2021 Aprilia RS 660?

The 2021 Aprilia RS 660 has a 15-litre fuel tank. At around 5-6 litres per 100 km, that is roughly 250-300 km between stops.

Is the 2021 Aprilia RS 660 suitable for shorter riders?

The 2021 Aprilia RS 660 has a seat height of 815 mm. This is a moderate seat height that suits a wide range of rider heights.

What brakes does the 2021 Aprilia RS 660 have?

The 2021 Aprilia RS 660 uses 2x 320mm Brembo radial calipers with 4 32mm opposing pistons. Radial pump and metal braided brake hose at the front and Single 220mm disc; Brembo calliper with 2 isolated ∅ 34mm pistons. Pump with integrated tank and metal braided hos at the rear.

What tyre sizes does the 2021 Aprilia RS 660 use?

The 2021 Aprilia RS 660 runs 120/70 ZR 17 Tubeless radials front and 180/55 ZR 17 rear tyres. A good selection of sport, touring and all-weather rubber is available in these sizes.

What gearbox does the 2021 Aprilia RS 660 have?

The 2021 Aprilia RS 660 is fitted with a 6 Speed, AQS Aprilia Quick Shift transmission.

Aprilia RS 660 Spec Evolution

The Aprilia RS 660 was produced across 2 model years (2020-2021). 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
Engine Detail	Four stroke, Forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder.	Four stroke, forward facing parallel twin, DOHC with silent chain drive on the right side, four valves per cylinder
Electronics Package	6-axis inertial platform, APRC suite which includes ATC (traction control, AWC (wheelie control), AEB (engine brake), AEM (engine map), ACC (cruise control) 5 Riding modes - (Road and Track, 3 fixed and 2 customizable)	6-axis inertial platform, APRC suite which includes ATC (traction control, AWC (wheelie control), AEB (engine brake), AEM (engine map), ACC (cruise control) 5 Riding modes - (Road and Track, 3 fixed and 2 customizable)
Final Drive	Chain	Chain, with drive ratio: 17/43
Rake	24.1.0°	24.1°