2008 Aprilia SX 125/RX 125 Preview

SPECIFICATIONS

Engine and Transmission

2008 Aprilia RX 125

Type: Rotax 122 single cylinder 2-stroke. Aluminium cylinder with Nikasil liner.

Displacement: 124.8 cc

Cooling: Liquid cooled.

Bore: 54 mm

Stroke: 54.5 mm

Compression ratio: 12.5:1

Intake: Reed valve.

Fuel system: Dell’Orto VHST 28 carburetor.

Lubrication: Separate mixing with variable displacement, volumetric pump.

Fuel: Unleaded petrol.

Starting: Kick start.

Ignition: Electronic CDI ignition.

Alternator: 12 V – 180 W.

Max. power at crank: 11 kW; 16 kW.

Max torque: 12.2 Nm @ 8000 rpm (11 kW); 16 Nm @ 9750 rpm (16 kW).

Gearbox: 6 speed.

Ratios:

1st 10/30

2nd 14/29

3rd 17/27

4th 19/25

5th 21/23

6th 22/21

Primary drive: Helical gears. Ratio: 19/63.

Final drive: Chain. Z 16 gearbox pinion, Z 45 rear wheel sprocket (11 kW); Z 15 gearbox pinion, Z 45 rear wheel sprocket (16 kW).

Clutch: Multi-plate wet clutch.

Chassis and Dimensions

2008 Aprilia RX 125

Frame: High strength steel frame with double trellis beam and double cradle. Detachable seat frame.

Front suspension: 40 mm upside down hydraulic fork. Wheel travel 260 mm.

Rear suspension: Steel swingarm. Hydraulic monoshock with piggy back cylinder. Wheel travel 270 mm.

Front brake: 260 mm disc. Floating caliper with two parallel pistons.

Rear brake: 220 mm disc. Floating caliper with single piston.

Front wheel: Aluminum, 1.6x21”.

Rear wheel: Aluminum, 2.15x18”.

Front tyre: Pirelli MT21, 90/90x21”.

Rear tyre: Pirelli MT21, 120/90x18”.

Overall length: 2,255 mm.

Overall width (at brake levers): 850 mm.

Overall height (at mirrors): 1,415 mm.

Seat height: 925 mm.

Wheelbase: 1,480 mm.

Dry weight: 116 Kg.

Fuel tank capacity: 10 liters (including 1.3 liters reserve).

Other

Top speed: 115 kph (11 kW); 120 kph (16 kW).

Versions: 11 kW and 16 kW.

Emissions: Euro 3 (11 kW and 16 kW).

Instrumentation: Essential multifunctional panel.

Colour schemes: Red Lion 08.

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