Aprilia RS 660 Extrema 2023 vs. Kawasaki Z900 RS 2020

Technical Specifications Aprilia RS 660 Extrema 2023 compared to Kawasaki Z900 RS 2020

Aprilia RS 660 Extrema 2023

Kawasaki Z900 RS 2020

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Differences

Aprilia RS 660 Extrema 2023

Kawasaki Z900 RS 2020

Engine and Drive Train

Engine type	Engine type	In line crankpin offset	Engine type	In line
Bore	Bore	81 mm	Bore	73.4 mm
Stroke	Stroke	63.93 mm	Stroke	56 mm
Engine power	Engine power	100 HP	Engine power	111 HP
Rpm at Max. Power	Rpm at Max. Power	10,500 rpm	Rpm at Max. Power	8,500 rpm
Torque	Torque	67 Nm	Torque	98.6 Nm
Rpm at Torque	Rpm at Torque	8,500 rpm	Rpm at Torque	6,500 rpm
Compression Ratio	Compression Ratio	13.5	Compression Ratio	10.8
Fuel system	Fuel system	Injection	Fuel system	Injection
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 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	948 ccm

Suspension Front

Front suspension	Front suspension	Upside-Down telescopic fork	Front suspension	Upside-Down telescopic fork
Diameter	Diameter	41 mm	Diameter	41 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	140 mm
Adjustment	Adjustment	Preload, Rebound	Adjustment	Preload, Rebound
Material	Material	Aluminium	Material	Aluminium

Chassis

Frame	Frame	Aluminium	Frame	Steel
Frame type	Frame type	Load-bearing engine	Frame type	Tubular
Rake	Rake	65.9 degree	Rake	65 degree
Trail	Trail	104.6 mm	Trail	98 mm

Brakes Front

Type	Type	Double disk	Type	Double disk
Diameter	Diameter	320 mm	Diameter	300 mm
Piston	Piston	Four pistons	Piston	Four pistons

Brakes Rear

Type	Type	Disc	Type	Disc
Diameter	Diameter	220 mm	Diameter	250 mm
Piston	Piston	Double piston	Piston	Single piston

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, Traction control

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	2,100 mm
Width	Width	745 mm	Width	865 mm
Wheelbase	Wheelbase	1,370 mm	Wheelbase	1,470 mm
Seat Height	Seat Height	820 mm	Seat Height	835 mm
Fuel Tank Capacity	Fuel Tank Capacity	15 l	Fuel Tank Capacity	17 l
License compliancy	License compliancy	A	License compliancy	A