Aprilia RS4 50 2019 vs. Aprilia SR 50 Street 2018

Technical Specifications Aprilia RS4 50 2019 compared to Aprilia SR 50 Street 2018

Aprilia RS4 50 2019

Aprilia SR 50 Street 2018

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Differences

Aprilia RS4 50 2019

Aprilia SR 50 Street 2018

Engine and Drive Train

Bore	Bore	39.9 mm	Bore	40 mm
Stroke	Stroke	40 mm	Stroke	39.3 mm
Engine power	Engine power	2.7 HP	Engine power	3.6 HP
Rpm at Max. Power	Rpm at Max. Power	5,250 rpm	Rpm at Max. Power	6,500 rpm
Torque	Torque	3.5 Nm	Torque	4.3 Nm
Rpm at Torque	Rpm at Torque	5,500 rpm	Rpm at Torque	6,000 rpm
Starter	Starter	Electric	Starter	Electric, Kick
Clutch Type	Clutch Type	Multiplate in oil-bath	Clutch Type	Centrifugal force
Transmission	Transmission	Chain	Transmission	Belt
Cylinders	Cylinders	1	Cylinders	1
Strokes	Strokes	2-Stroke	Strokes	2-Stroke
Cooling	Cooling	liquid	Cooling	liquid
Displacement	Displacement	50 ccm	Displacement	49.4 ccm

Brakes Front

Piston	Piston	Four pistons	Piston	Double piston

Brakes Rear

Type	Type	Disc	Type	Disc
Piston	Piston	Single piston	Piston	Double piston

Dimensions and Weights

Front tyre width	Front tyre width	100 mm	Front tyre width	130 mm
Front tyre height	Front tyre height	80 %	Front tyre height	60 %
Front tyre diameter	Front tyre diameter	17 inch	Front tyre diameter	13 inch
Rear tyre width	Rear tyre width	130 mm	Rear tyre width	130 mm
Rear tyre height	Rear tyre height	70 %	Rear tyre height	60 %
Rear tyre diameter	Rear tyre diameter	17 inch	Rear tyre diameter	13 inch
Length	Length	1,968 mm	Length	1,775 mm
Width	Width	760 mm	Width	720 mm
Wheelbase	Wheelbase	1,353 mm	Wheelbase	1,265 mm
Seat Height	Seat Height	810 mm	Seat Height	815 mm
Kerb Weight	Kerb Weight	132 kg	Kerb Weight	106 kg
Fuel Tank Capacity	Fuel Tank Capacity	14 l	Fuel Tank Capacity	8 l
Top Speed	Top Speed	45 km/h	Top Speed	45 km/h
License compliancy	License compliancy	AM	License compliancy	AM