Aprilia RS 660 2025 vs. Kawasaki Ninja ZX-4RR 2027

Technical Specifications Aprilia RS 660 2025 compared to Kawasaki Ninja ZX-4RR 2027

Aprilia RS 660 2025

Kawasaki Ninja ZX-4RR 2027

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Differences

Aprilia RS 660 2025

Kawasaki Ninja ZX-4RR 2027

Engine and Drive Train

Engine type	Engine type	In line crankpin offset	Engine type	In line
Bore	Bore	81 mm	Bore	57 mm
Stroke	Stroke	63.93 mm	Stroke	39.1 mm
Engine power	Engine power	105 HP	Engine power	77 HP
Rpm at Max. Power	Rpm at Max. Power	10,500 rpm	Rpm at Max. Power	14,500 rpm
Torque	Torque	67 Nm	Torque	39 Nm
Rpm at Torque	Rpm at Torque	8,500 rpm	Rpm at Torque	13,000 rpm
Compression Ratio	Compression Ratio	13.5	Compression Ratio	12.3
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	4
Strokes	Strokes	4-Stroke	Strokes	4-Stroke
Valves	Valves	DOHC	Valves	DOHC
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	659 ccm	Displacement	399 ccm

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, Ride by Wire, Quickshifter, Shift assistant with blipper, Traction control, Modern electronics

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	160 mm
Rear tyre height	Rear tyre height	55 %	Rear tyre height	60 %
Rear tyre diameter	Rear tyre diameter	17 inch	Rear tyre diameter	17 inch
Length	Length	1,995 mm	Length	1,990 mm
Width	Width	745 mm	Width	765 mm
Height	Height	1,150 mm	Height	1,110 mm
Wheelbase	Wheelbase	1,370 mm	Wheelbase	1,380 mm
Seat Height	Seat Height	820 mm	Seat Height	800 mm
Kerb Weight (with ABS)	Kerb Weight (with ABS)	183 kg	Kerb Weight (with ABS)	189 kg
Fuel Tank Capacity	Fuel Tank Capacity	15 l	Fuel Tank Capacity	15 l
License compliancy	License compliancy	A	License compliancy	A

Equipment

Equipment	Equipment	LED-Headlights	Equipment	Bluetooth, Connectivity, LED-Headlights, TFT display, Modern electronics, Lighting