APRILIA SX 50

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: 300 mm stainless steel disc; floating caliper
Rear: 180 mm stainless steel disc; caliper with two opposing pistons

Wheels
Spoked wheels with aluminium rim.
Front: 2.50 X 17”
Rear: 3.50 x 17”

Tyres
Front: 110/80 - 17”
Rear: 130/70 -17”

Dimensions
Overall length: 2045 mm
Overall width: 825 mm
Seat height: 830 mm
Wheelbase: 1406 mm

Tank capacity
7 litres

Exhaust system
Catalytic converter