Sportbikes

2026Aprilia RS 660 Extrema

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The 2026 Aprilia RS 660 Extrema is a lightweight middleweight sport bike designed for riders seeking accessible performance and agility. Powered by a 659cc parallel-twin engine producing 100 horsepower, it delivers sharp handling and a top speed of 235 km/h, making it ideal for both track enthusiasts and spirited road riding. Known for its Italian engineering and responsive twin-cam mechanics, the RS 660 Extrema bridges the gap between beginner-friendly and serious sportbike performance.

Capacity: 659.0 ccm
Engine: Parallel Twin, four-stroke
Gearbox: 6-speed
Dry weight: 166.0 kg
Seat height: 820 mm
Power: 100.0 HP (73.0 kW) @ 10500 RPM

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How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail5%

Cornering93%

City riding45%

Daily riding40%

Touring30%

Two-up10%

Track90%

Best for: Built as a sharpened, single-seat special edition of the RS 660, it exists primarily for spirited cornering, trackday laps, and showcasing lightweight sportbike engineering.
Built for: It behaves like a scalpel rather than a hammer, favoring quick direction changes, high-revving mid-capacity twin punch, and confidence-inspiring feedback over outright brute power.
Not ideal for: It is not a good fit for new riders, those seeking upright comfort, passenger-friendly touring, or anyone planning to ride off paved roads.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 820mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with balls of both feet on the 2026 Aprilia RS 660 Extrema, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 751-820 mm — Middle Ground →

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Range and running costs

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Units

Currency

Fuel per litre

Riding a year

Based on the maker's published fuel consumption and tank size. Real-world figures depend on how and where you ride, and the last litres of a tank are reserve. Prices shown greyed are examples - type your own.

Full specifications

Engine

Capacity: 659.0 ccm
Power: 100.0 HP (73.0 kW) @ 10500 RPM
Torque: 67.0 Nm (6.8 kgf-m) @ 8500 RPM
Engine type: Parallel Twin, four-stroke
Fuel consumption: 4.10 litres/100 km (24.4 km/l)
Power/weight ratio: 0.6024 HP/kg (dry)
Bore x stroke: 81.0 x 63.9 mm
Compression: 13.5:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Ignition: Electric
Valves per cylinder: 4
Lubrication system: Wet Sump

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Multi-plate wet clutch with mechanical slip system

Performance

Top speed: 235.0 km/h (146.0 mph)
0-60 mph: 3.60 seconds
0-100 km/h (0-62 mph): 3.90 seconds

Dimensions & weight

Wheelbase: 1370 mm
Seat height: 820 mm
Dry weight: 166.0 kg
Wet weight: 180.0 kg
Fuel capacity: 15.00 litres

Chassis & suspension

Frame: Aluminium dual beam chassis with removable seat support subframe
Front suspension: Kayaba 41-mm stanchion fork, aluminium radial calliper mounting bracket. Adjustable spring preload and rebound damping.
Rear suspension: Aluminium asymmetric swingarm. Adjustable monoshock in spring reload, rebound braking
Front wheel travel: 120 mm
Rear wheel travel: 130 mm
Rake (fork angle): 24.1°
Trail: 104 mm