Aprilia RS 660 2025 vs. KTM 450 SMR 2023

Technical Specifications Aprilia RS 660 2025 compared to KTM 450 SMR 2023

Aprilia RS 660 2025

KTM 450 SMR 2023

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Differences

Aprilia RS 660 2025

KTM 450 SMR 2023

Engine and Drive Train

Bore	Bore	81 mm	Bore	95 mm
Stroke	Stroke	63.93 mm	Stroke	63.4 mm
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, Antihopping
Transmission	Transmission	Chain	Transmission	Chain
Transmission Type	Transmission Type	Gearshift	Transmission Type	Gearshift
Number of gears	Number of gears	6	Number of gears	5
Cylinders	Cylinders	2	Cylinders	1
Strokes	Strokes	4-Stroke	Strokes	4-Stroke
Valves per cylinder	Valves per cylinder	4	Valves per cylinder	4
Valves	Valves	DOHC	Valves	OHC
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	659 ccm	Displacement	449.9 ccm

Suspension Front

Front suspension	Front suspension	Upside-Down telescopic fork	Front suspension	Upside-Down telescopic fork
Brand	Brand	Kayaba	Brand	WP
Diameter	Diameter	41 mm	Diameter	48 mm
Travel	Travel	120 mm	Travel	285 mm

Suspension Rear

Suspension	Suspension	Swing arm	Suspension	Swing arm
Shock absorber	Shock absorber	Monoshock	Shock absorber	Monoshock
Travel	Travel	130 mm	Travel	266 mm

Chassis

Frame	Frame	Aluminium	Frame	Steel
Frame type	Frame type	Load-bearing engine	Frame type	Double cradle, Central tube
Rake	Rake	65.9 degree	Rake	63.9 degree

Brakes Front

Type	Type	Double disk	Type	Single disk
Diameter	Diameter	320 mm	Diameter	310 mm
Piston	Piston	Four pistons	Piston	Four pistons
Technology	Technology	radial	Technology	radial
Brand	Brand	Brembo	Brand	Brembo

Brakes Rear

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

Dimensions and Weights

Front tyre width	Front tyre width	120 mm	Front tyre width	125 mm
Front tyre height	Front tyre height	70 %	Front tyre height	75 %
Front tyre diameter	Front tyre diameter	17 inch	Front tyre diameter	16.5 inch
Rear tyre width	Rear tyre width	180 mm	Rear tyre width	165 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
Seat Height	Seat Height	820 mm	Seat Height	890 mm
Fuel Tank Capacity	Fuel Tank Capacity	15 l	Fuel Tank Capacity	7.2 l