Aprilia SX125

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2008 Aprilia SX 125
2009 aprilia sx125
2009 aprilia sx125-1

Dedicated to today’s demanding young sports riders, the Aprilia RX125 and SX 125 incorporate many of the features that have contributed to the amazing success of the RSV and SXV. these two stylish, high performance motorcycles set new standards for the 125 market.

It was inevitable that the innovative SXV and RXV would extend their influence to other members of the Aprilia range sooner or later. The world-beating styling, performance and technology of these fantastic machines was obviously destined to engender a family of eye-catching and modern off-road motorcycles. 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 from the crowd.

The SX and RX are both built to deliver total rider satisfaction. Though the technology is basically the same, it has been adapted to match the different specialties. The SX and RX 125 share the same body, frame, engine and suspensions but are designed for very different passions.

With its 17” wheels and sports tires, 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, even when ridden to the limit on a racetrack.

RX is a historical name for Aprilia. Over the years the RX designation has graced machines with amazing performance, real ‘schools on wheels’ for young enthusiasts learning the ropes in off-road riding and racing. The new RX is built with the same objectives in mind, as a real enduro, not extreme but perfectly able to tackle even the most advanced off-road circuits. The RX even has something of a split personality, because as soon as you get back on the road, it is equally happy as a daily commuter.

The RX and the SX 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[edit]

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 also destined to leave their mark on young off-road riders. Built as highly functional motorcycles, and for efficient riding and control, their styling leaves no room for pointless frills and gadgets. With unmistakable lines, the SX and RX are simply unique among off-roaders.


Engine[edit]

The single cylinder unit that powers these Aprilia’s 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 and Suspension[edit]

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, the long steel swingarm used to obtain maximum traction is damped by a prestigious hydraulic monoshock with piggy back cylinder. Rear wheel travel is 270 mm.


Wheels[edit]

Specialist machines like the RX and SX demand top quality components, and wheels play a specially important role in determining ride characteristics, having to combine the contrasting properties of strength and lightness. The RX and SX are equipped with aluminum wheels. The RX is fitted with a classic enduro racing front wheel of 21” in diameter and a 90/90-21 tire for fantastic grip on all sorts of surface. The 18” rear wheel is fitted with a 120/90 tire, again in keeping with the best off-road traditions.

Just like top sports motards, the SX boasts lightweight 17 inch, wide profile wheels and generous sports tires, 110/70-17” and 150/60-17” for maximum grip under all conditions.


Instrumentation[edit]

To confirm its determination to build advanced motorcycles that are also 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.

Specifications[edit]

Make Model Aprilia SX 125
Year 2008
Engine Liquid cooled, single cylinder two stroke. Aluminum cylinder with Nikasil coated liner. Read valve intake. Separate mixing. Homologated to Euro 3 standard.
Capacity 125
Bore x Stroke 54 x 54.5 mm
Compression Ratio 12.5:1
Induction Dell’Orto VHST 28
Ignition / Starting Electronic CDI / kick
Max Power
Max Torque
Transmission / Drive 6 Speed / chain
Gear Ratio 1st 10/30 2nd 14/29 3rd 17/27 4th 19/25 5th 21/23 6th 22/21
Frame High strength steel frame with double trellis beam and double cradle. Separate seat frame.
Front Suspension Upside down telescopic fork, Ø 40 mm. 260mm Wheel travel
Rear Suspension Steel swingarm. Hydraulic monoshock with piggy back cylinder. 270mm wheel travel
Front Brakes Single 260mm disc 2 piston caliper
Rear Brakes Single 220mm disc 1 piston caliper
Front Tyre 110/70 17
Rear Tyre 150/60 17
Dry-Weight
Fuel Capacity 10 Liters (1.3 li res)
2008 Aprilia SX 125.jpg
Aprilia SX125
Manufacturer
Also called SX 125
Production 2008 - 2018
Class Supermotard
Engine
single cylinder, four-stroke
Bore / Stroke 58.0mm x 47.0mm
Compression ratio 12.5:1
Top Speed 75 mph (120 km/h)
Horsepower 14.62 HP (10.9 KW) @ 10500RPM
Torque 8.04 ft/lbs (10.9 Nm) @ 8250RPM
Ignition electronic with cdi capacity discharge
Transmission Gear box: 6-speed

Final Drive: chain

Clutch: multi-plate in oil bath.
Suspension Front: ø 41 mm telescopic upside down fork
Rear: hydraulic monoshock absorber with progressive link system.
Brakes Front: single disc. floating caliper
Rear: single disc. floating caliper
Front Tire 100/80-17
Rear Tire 130/70-17
Wheelbase 53.15 inches (1350 mm)
Length 85.24 inches (2165 mm)
Width 33.46 inches (850 mm)
Height 54.72 inches (1390 mm)
Seat Height 34.65 inches (880 mm)
Weight 253.53 pounds (115.0 Kg) (dry), 120.0 kg (wet)
Fuel Capacity 1.98 Gallon (7.50 Liters)
Manuals Service Manual


The Aprilia SX125 was a single cylinder, four-stroke Supermotard motorcycle produced by Aprilia between 2008 and 2018. It could reach a top speed of 75 mph (120 km/h). Max torque was 8.04 ft/lbs (10.9 Nm) @ 8250 RPM. Claimed horsepower was 14.62 HP (10.9 KW) @ 10500 RPM.

Engine[edit]

The engine was a liquid cooled single cylinder, four-stroke. A 58.0mm bore x 47.0mm stroke result in a displacement of just 124.8 cubic centimeters. Fuel was supplied via a double overhead cams/twin cam (dohc).

Drive[edit]

The bike has a 6-speed transmission. Power was moderated via the multi-plate in oil bath..

Chassis[edit]

It came with a 100/80-17 front tire and a 130/70-17 rear tire. Stopping was achieved via single disc. floating caliper in the front and a single disc. floating caliper in the rear. The front suspension was a ø 41 mm telescopic upside down fork while the rear was equipped with a hydraulic monoshock absorber with progressive link system.. The SX125 was fitted with a 1.98 Gallon (7.50 Liters) fuel tank. The bike weighed just 253.53 pounds (115.0 Kg). The wheelbase was 53.15 inches (1350 mm) long.

2008 Aprilia SX 125[edit]

2008 Aprilia SX 125 2008 Aprilia SX 125

The 2008 MY Aprilia SX 125 has, at its heart, a liquid-cooled, two-stroke, 124cc, single cylinder powerplant mated to a six-speed manual transmission, and can produce a claimed 22 horsepower and 16 Nm of torque. This agile supermoto comes standard with features such as 40mm upside-down telescopic fork, a piggy-back monoshock as a rear suspension, front and rear disc brakes with Brembo calipers, laced wheels, a digital display on the instrument cluster and a race-like livery.


2009 Aprilia SX 125[edit]

The 2009 MY Aprilia SX 125 is an agile supermoto, suitable for younger and less-experienced riders, but can also be used by the more seasoned ones that want a more fuel-efficient machine. It comes standard with a 40mm upside-down telescopic fork, a piggy-back monoshock as a rear suspension, front and rear disc brakes with Brembo calipers, laced wheels, a digital display on the instrument cluster and a race-like livery.

At its heart lies a liquid-cooled, two-stroke, 124cc, single cylinder lump mated to a six-speed manual transmission, and can produce a claimed 22 horsepower and 16 Nm of torque.


2010 Aprilia SX 125[edit]

2010 Aprilia SX 125 2010 Aprilia SX 125

The 2010 MY Aprilia SX 125 sports a liquid-cooled, two-stroke, 124cc, single cylinder powerhouse mated to a six-speed manual transmission, and can produce a claimed 22 horsepower and 16 Nm of torque. It also comes standard with features such as a 40mm upside-down telescopic fork, a piggy-back monoshock as a rear suspension, front and rear disc brakes with Brembo calipers, laced wheels, a digital display on the instrument cluster and a race-like livery.


2011 Aprilia SX 125[edit]

The 2011 MY Aprilia SX 125 is an entry-level supermotard, suitable for both the young and inexperienced among Aprilia fans, as well as the more seasoned ones that prefer agility instead of raw power from their two-wheeler. It sports a liquid-cooled, two-stroke, 124cc, single cylinder powerhouse paired to a six-speed manual transmission, and can produce a claimed 22 horsepower and 16 Nm of torque.

It also boasts standard features such as a 40mm upside-down telescopic fork, a piggy-back monoshock as a rear suspension, front and rear disc brakes with Brembo calipers, laced wheels, a digital display on the instrument cluster and a race-like livery.


2012 Aprilia SX 125[edit]

2012 Aprilia SX 125 2012 Aprilia SX 125

The 2012 MY Aprilia SX 125 has, at its heart, a liquid-cooled, two-stroke, 124cc, single cylinder powerhouse paired to a six-speed manual transmission, and can produce a claimed 22 horsepower and 16 Nm of torque. It boasts features such as a race-derived livery, a digital instrumentation panel inspired from the RXV, front and rear disc brakes with Brembo calipers, a piggy-back monoshock as a rear suspension, plus a 40mm upside-down telescopic fork.