Aprilia RS 660 2021 vs. Yamaha R9 2025

Aprilia RS 660 2021

Yamaha R9 2025

Overview - Aprilia RS 660 2021 vs Yamaha R9 2025

Aprilia RS 660 2021

Yamaha R9 2025

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Technical Specifications Aprilia RS 660 2021 compared to Yamaha R9 2025

Aprilia RS 660 2021

Yamaha R9 2025

Aprilia RS 660 2021

Yamaha R9 2025

Engine and Drive Train

Engine type	Engine type	In line crankpin offset	Engine type	In line
Bore	Bore	81 mm	Bore	78 mm
Stroke	Stroke	63.93 mm	Stroke	62.1 mm
Engine power	Engine power	100 HP	Engine power	119 HP
Rpm at Max. Power	Rpm at Max. Power	10,500 rpm	Rpm at Max. Power	10,000 rpm
Torque	Torque	67 Nm	Torque	93 Nm
Rpm at Torque	Rpm at Torque	8,500 rpm	Rpm at Torque	7,000 rpm
Compression Ratio	Compression Ratio	13.5	Compression Ratio	11.5
Fuel system	Fuel system	Injection	Fuel system	Injection
Starter	Starter	Electric	Starter	Electric
Clutch Type	Clutch Type	Multiplate in oil-bath, Antihopping	Clutch Type	Multiplate in oil-bath
Transmission	Transmission	Chain	Transmission	Chain
Transmission Type	Transmission Type	Gearshift	Transmission Type	Gearshift
Number of gears	Number of gears	6	Number of gears	6
Cylinders	Cylinders	2	Cylinders	3
Strokes	Strokes	4-Stroke	Strokes	4-Stroke
Valves per cylinder	Valves per cylinder	4	Valves per cylinder	4
Valves	Valves	DOHC	Valves	DOHC
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	659 ccm	Displacement	890 ccm

Suspension Front

Front suspension	Front suspension	Upside-Down telescopic fork	Front suspension	Upside-Down telescopic fork
Diameter	Diameter	41 mm	Diameter	43 mm
Travel	Travel	120 mm	Travel	120 mm
Adjustment	Adjustment	Compression, Preload, Rebound	Adjustment	Compression, Preload, Rebound

Suspension Rear

Suspension	Suspension	Swing arm	Suspension	Swing arm
Shock absorber	Shock absorber	Monoshock	Shock absorber	Monoshock
Travel	Travel	130 mm	Travel	118 mm
Adjustment	Adjustment	Preload, Rebound	Adjustment	Preload, Rebound

Chassis

Frame	Frame	Aluminium	Frame	Aluminium
Frame type	Frame type	Load-bearing engine	Frame type	Twin Tube
Rake	Rake	65.9 degree	Rake	68 degree
Trail	Trail	104.6 mm	Trail	94 mm

Brakes Front

Type	Type	Double disk	Type	Double disk
Diameter	Diameter	320 mm	Diameter	320 mm

Brakes Rear

Type	Type	Disc	Type	Disc
Diameter	Diameter	220 mm	Diameter	220 mm

Assistance Systems

Advanced Rider Assistance Systems	Advanced Rider Assistance Systems	ABS, Riding modes, Launch-Control, Ride by Wire, Quickshifter, Traction control, Anti-wheelie	Advanced Rider Assistance Systems	ABS, Riding modes, Cornering ABS, Ride by Wire, Quickshifter, Shift assistant with blipper, Cruise control, Traction control, Anti-wheelie

Dimensions and Weights

Front tyre width	Front tyre width	120 mm	Front tyre width	120 mm
Front tyre height	Front tyre height	70 %	Front tyre height	70 %
Front tyre diameter	Front tyre diameter	17 inch	Front tyre diameter	17 inch
Rear tyre width	Rear tyre width	180 mm	Rear tyre width	180 mm
Rear tyre height	Rear tyre height	55 %	Rear tyre height	55 %
Rear tyre diameter	Rear tyre diameter	17 inch	Rear tyre diameter	17 inch
Length	Length	1,995 mm	Length	2,070 mm
Width	Width	745 mm	Width	705 mm
Wheelbase	Wheelbase	1,370 mm	Wheelbase	1,420 mm
Seat Height	Seat Height	820 mm	Seat Height	830 mm
Kerb Weight (with ABS)	Kerb Weight (with ABS)	183 kg	Kerb Weight (with ABS)	195 kg
Fuel Tank Capacity	Fuel Tank Capacity	15 l	Fuel Tank Capacity	14 l
License compliancy	License compliancy	A	License compliancy	A2, A

Equipment

Equipment	Equipment	LED-Headlights	Equipment	Connectivity, LED daytime running lights, LED-Headlights, TFT display

Pros and Cons in comparison

Aprilia RS 660 2021

In 2021, the Aprilia RS 660 can be seen as the last true 600cc supersport, because with its sporty seating position and high-quality chassis components, it hits the sweet spot between suitability for everyday use and trackday potential. Thanks to the comprehensive electronics package, nothing is left to be desired on the road or on the track - and you can't complain about the powerful two-cylinder anyway. A great package for all those for whom 200+ hp superbikes are too much for everyday use.

powerful engine

extensive electronics package

sporty chassis

nice sound

low weight

sporty look

poorly readable rev counter

Yamaha R9 2025

The Yamaha R9 is not a feel-good motorbike for leisurely country road tours - and that's a good thing. It appeals to ambitious riders who are looking for a sporty machine that also excites off the race track. The engine is outstanding, the suspension is top-notch and the brakes are excellent. Only the demanding ergonomics make the Yamaha R9 less attractive for long-distance riders or pleasure bikers. However, if you are looking for a sharp country road weapon with trackday potential, the R9 is an extremely well-rounded and affordable overall package. Be sure to test ride it! This is the only way to find out whether you are the type for the physical and direct nature of the Yamaha R9.

Large usable power range

good automatic gearshift with extended functionality

suitable for road and race track use

extensive electronics

good suspension, good brakes

Low-mounted handlebar ends, which makes for strenuous ergonomics for the wrists and neck