Aprilia SX50
ENDURO EMOTIONS
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.
TECHNICAL CHART
Engine type: Liquid cooled, single cylinder two stroke with light
alloy cylinder
Fuel: Lead-free petrol
Bore and stroke: 39.88 x 40 mm
Displacement: 49.9 cc
Compression ratio: 11.5:1
Fuel system: DELL’ORTO PVHA 17.5 carburettor
Fuel shut-off on tank
Ignition: Electronic C.D.I
Starting: Kick start
Alternator: 85 W (120 W optional)
Lubrication: Automatic mixer
Gearbox : 6 speed.
Ratios:
1st 11/34
2nd 15/30
3rd 18/27
4th 20/24
5th 22/23
6th 23/22
Clutch: Multi-plate
Primary drive: Gears.
Ratio: 21/78
Final drive: Chain.
Ratio: 11/53
Frame: Steel beam
Front suspension: 40 mm hydraulic fork with leading axle, wheel
travel 195 mm.
Rear suspension: High strength steel swingarm; hydraulic
monoshock; wheel travel 180 mm.
Brakes:
Front: 260 mm stainless steel disc; floating calliper.
Rear: 180 mm stainless steel disc; caliper with two opposing
pistons
Wheels: Spoked wheels with aluminium rim.
Front: 1.85 x 21”
Rear: 2.15 x 18”
Tyres:
Front: 90/90 - 21”
Rear: 110/80 -18”
Dimensions:
Overall length: 2100 mm
Overall width: 825 mm
Seat height: 880 mm
Wheelbase: 1412 mm
Tank capacity: 7 litres
Exhaust system: Catalytic converter
