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Aprilia SX 50

Make Model	Aprilia SX 50
Year	2013
Engine	Single cylinder, two stroke
Capacity	49.9 cc / 3.04 cu in
Bore x Stroke	39.9 x 40 mm
Cooling System	Liquid cooled
Compression Ratio	11.5:1
Lubrication	Automatic mixer
Exhaust	Single, hich under seat
Induction	Dell'Orto PVHA 17.5 carburetor
Ignition	Electronic CDI
Starting	Kick
Clutch	Wet, multi plate
Transmission	6 speed
Gear Ratios	1st 11:34 2nd 15:30 3rd 18:27 4th 20:24 5th 22:23 6th 23:22
Final Drive	Chain
Primary Drive Ratio	21/87
Final Drive Ratio	11/53
Frame	Steel beam
Front Suspension	40mm Hydraulic fork
Front Wheel Travel	195 mm / 7.7 in
Rear Suspension	High strength steel swingarm, hydraulic monoshock
Rear Wheel Travel	180 mm / 7.1 in
Front Brakes	Single 260mm stainless steel disc,floating caliper
Rear Brakes	Single 180mm disc, floating caliper
Wheels	Aluminium and alloy rims and spokes
Front Tyre	100/80 ZR17
Rear Tyre	130/70 ZR17
Dimensions	Length: 2045 mm / 80.5 in Width: 835 mm / 32.5 in
Wheelbase	1400 mm / 55.1 in
Seat Height	835 mm / 32.9 in
Dry Weight	98 kg / 216 lbs
Fuel Capacity	7 Litres / 1.85 US gal

The Aprilia RXV and SXV were the first bikes in the world to break the ‘single cylinder’ taboo and install a high performance twin in enduro and supermotard motorcycles. At the time it was seen as an almost impossible challenge to develop an off-road twin that would still be accessible to the riding public. But Aprilia’s R&D had the conviction, determination and experience for the job, and victories in top level competitions soon came flooding in, followed by the world supermotard championship title.

But at Aprilia, we have never been satisfied to rest on our laurels. We see racing as the most effective method of testing new ideas and solutions that we can then introduce across the range, from our flagship model to our 50 cc machines.

The RX 50 enduro and SX 50 supermotard are high performance 50 cc machines. They are both powered by an engine of the latest generation and feature the sort of chassis that many big can only envy.

Don’t be fooled by the size of the 50 cc engine. The RX and SX are real motorcycles, and just at home on tough racing circuits as they are on the daily trip from home to school or college.
Their design speaks for itself. Their sharp, clear-cut lines derive directly from the RXV/SXV off-road style icons. Just as their bigger sisters before them, the RX and SX are on their way to create a whole new fashion in 50 cc styling.

The new perimeter frame forms a direct connection between the steering head and the swingarm pivot, in line with the latest off-road developments. The frame is made from high strength steel to absorb all the stress that hard off-road riding can transmit. This synthesis of strength and lightness is the perfect match for the characteristics of the RX/SX 50. The suspensions are another one of the strong points of these exceptional motorcycles. At the front there is a mighty fork with 40 mm stanchions giving a wheel travel of 195 mm, more than enough to absorb even the hardest knocks. At the back, the high strength steel swingarm is damped by an advanced hydraulic monoshock giving a generous 180 mm of rear wheel travel to ensure that the RX/SX 50 can tackle even the toughest terrains.