Aprilia SX And RX 125

Dedicated to today’s demanding young sports riders, the Aprilia RX and SX 125 incorporate many of the features that have contributed to the success of the RXV and SXV. These two stylish, high performance motocycles set new standards for the 125 market.

Aprilia sX and RX 125

The SX 125 and RX 125 are the latest off-road machines from Aprilia. Specialist and refined, they are the obvious choice for young riders who want to stand out right from the very start.

The SX and RX share the same body, frame, engine and suspensions but have very different characters for very different passions.

With its 17” wheels and sports tyres, the SX is the obvious candidate for the prize of the meanest 125 over mixed routes. Nippy and lightweight, the SX delivers real ‘big bike’ performance without exceeding the power restrictions imposed by law. Its refined, sprightly engine never lets you down.

The RX and the SX 125 also share a clear Aprilia family look, obviously inspired by their bigger sisters, machines that have established a whole new trend in off-road design.

Styling

Aprilia was the first manufacturer to introduce dramatic innovations to the designs of essential enduro and motard motorcycles. In the same way in which the RXV and SXV have become style icons in their own right, the SX and RX are destined to leave their mark on young off-road riders.

As with all off road motorcycles worthy of respect, the SX and RX are built for maximum functionality and efficient riding and control. Their styling leaves no room for pointless frills and gadgets. The unmistakably pure lines of the SX and RX are simply unique among off-roaders.

Engine

The single cylinder unit that powers these Aprilia 125 cc motorcycles is a state-of-the-art two stroke engine. It is a classic example of how race-developed technology can deliver extremely low emissions as well as top performance. On the RX 125 and SX 125, Aprilia has succeeded in perfecting its two stroke design to bring it in line with the strict new Euro 3 standard without any loss of performance or riding satisfaction. This sparkling single cylinder engine easily develops the maximum permitted power for its class, with all the lightness and zippy acceleration typical of a high performance two stroke.

This engine has already established a place for itself in the hearts of 125 fans, thanks to its many advanced characteristics, including liquid cooling, and a balancer shaft. The cylinder has a nickel silicon carbide (Nikasil) liner for an ultra-reliable, extended life. Lubrication is provided by a separate mixer system.

Brakes & Suspension

Active safety on the Aprilia RX and SX is ensured by advanced suspension and a braking system that sets new standards for stopping power and progressive action. The front brakes feature a 260 mm disc and two-piston floating caliper while the back brake incorporates a 220 mm disc and another floating piston.

The robust, steel, double cradle frame is coupled to an over-sized suspension system. At the front is a mighty, 40 mm upside down telescopic fork offering wheel travel of 260 mm.

At the back, a long steel swingarm delivers maximum traction and a rear wheel travel of 270 mm.

Wheels

Specialist motorcycles like the RX and SX demand top level components, especially wheels, the strength and lightness of which are so important to handling. The Aprilia RX and SX are equipped with prestigious spoked wheels with new black anodised rims. Just like top sports motards, the SX boasts lightweight 17 inch, wide profile wheels and generous sports tyres, 110/70-17” and 150/60-17” for maximum grip under all conditions.

Instrumentation

To confirm its determination to build advanced motorcycles that are versatile and practical in everyday use, Aprilia has equipped the RX and SX with sophisticated digital instruments just like those on the bigger SXV and RXV.

Once again Aprilia motorcycles are going to feature in the dreams of young riders.

Aprilia SX125 Technical Specifications

Type	Rotax 122 single cylinder 2-stroke. Aluminium cylinder with Nikasil coated liner.
Displacement	124.8 cc
Cooling	Liquid cooling
Bore	54 mm
Stroke	54.5 mm
Compression ratio	12.5:1
Intake	Reed valve.
Fuel system	Dell’Orto VHST 28 carburettor.
Lubrication	Separate mixing with variable displacement volumetric pump.
Fuel	Unleaded petrol
Starting	Kick start.
Ignition	Electronic CDI ignition.
Alternator	12V-180 W
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. 16 tooth gearbox pinion, 45 tooth rear wheel sprocket (11 kW); 15 tooth gearbox pinion, 45 tooth rear wheel sprocket (16 kW).
Clutch	Multi-plate wet clutch.
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. 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	Aluminium, 3.00×17”
Rear wheel	Aluminium, 4.25×17”
Front tyre	Pirelli Diablo, 110/70×17”
Rear tyre	Pirelli Diablo, 150/60×17”
Overall length	2,165 mm
Overall width (at brake levers)	850 mm
Overall height (at mirrors)	1,390 mm
Seat height	870 mm
Wheelbase	1480 mm
Fuel tank capacity	10 litres (including 1.3 litres reserve).
Versions	11 kW and 16 kW
Emissions	Euro 3 (11 kW and 16 kW).
Other characteristics	Essential multifunctional instrument panel.
Colour schemes	Off Black