The Aprilia RS125 is a GP derived replica sport production motorcycle. It is powered by a

Rotax Rotax is the brand name for a range of internal combustion engines developed and manufactured by the Austrian company BRP-Rotax GmbH & Co KG (until 2016 BRP-Powertrain GmbH & Co. KG), in turn owned by the Canadian Bombardier Recreational Product ...

single cylinder 124.8 cc

two-stroke engine A two-stroke (or two-stroke cycle) engine is a type of internal combustion engine that completes a power cycle with two strokes (up and down movements) of the piston during one power cycle, this power cycle being completed in one revolution of t ...

with

Nikasil Nikasil is a trademarked electrodeposited lipophilic nickel matrix silicon carbide coating for engine components, mainly piston engine cylinder liners. Development Nikasil was introduced by Mahle in 1967, and initially developed to allow Wankel ...

coated aluminium cylinder block, and

liquid cooling Liquid cooling refers to cooling by means of the convection or circulation of a liquid. Examples of liquid cooling technologies include: * Cooling by convection or circulation of coolant, including water cooling * Liquid cooling and ventilatio ...

Generations

RS125 Extrema/Replica 1992 to 1995

Aprilia introduced the first RS125 in 1992. It has an angular tail section and swept front fairing, square cut headlight unit, three spoke rims, air scoops on the upper front middle fairing,

Electric starter A starter (also self-starter, cranking motor, or starter motor) is a device used to rotate (crank) an internal-combustion engine so as to initiate the engine's operation under its own power. Starters can be electric, pneumatic, or hydraulic. ...

kick start Kick start is a method of starting an internal combustion engine (usually that of a motorcycle) by pushing a ratcheting lever with one's foot. Kick start mechanisms were almost universally a part of motorcycle engines before the mid-1970s, and w ...

on the left hand side and analogue gauges. There was only one model variant in this year range which denoted RS 125 R on the tank and was red and black in colour. Production was late 1993/94

RS125 1996 to 1998

The RS125 is revised and the Extrema wording is dropped. The RS retains a lot of the appearances of the previous RS but there are some notable differences. The first one is a new engine, the Rotax 122, a new improved version to the previous one. The front air intakes are integrated into the front upper portion of the middle fairing. The

headlight A headlamp is a lamp (electrical component), lamp attached to the front of a vehicle to illuminate the road ahead. Headlamps are also often called headlights, but in the most precise usage (language), usage, ''headlamp'' is the term for the ...

unit is rounded and the lip is introduced to the top centre. A

digital Digital usually refers to something using discrete digits, often binary digits. Technology and computing Hardware *Digital electronics, electronic circuits which operate using digital signals **Digital camera, which captures and stores digital i ...

gauge is added in place of the temperature gauge.

RS125 1999 to 2005

The RS125 was revised again in 1999 with more rounded and bulbous fairings, five spoke rims and a single air duct on the driver's right hand side. The lip on the headlight unit is increased in size.

RS125 2006 to 2012

The RS125 was given completely new fairing styling similar to the RSV 1000R. It has angular fairings, two headlight bulbs, a digital gauge, and multispoke Marchesini-styled rims. Aprilia changed to radial four-piston brake calipers and added braided brake lines. In 2008, Aprilia changed the electronics from Nippon-Denso to Piaggio/EFI Technolog electronics, and changed to a new ECU to meet the more stringent EURO3 emissions standards. Rs125alitalia

The bike also has a vacuum fuel tap on the tank and a new Dell'orto 28 mm VHST

carburetor A carburetor (also spelled carburettor) is a device used by an internal combustion engine to control and mix air and fuel entering the engine. The primary method of adding fuel to the intake air is through the venturi tube in the main meteri ...

that has the vacuum pipe extension. The line was dropped in 2012 to make way for the new RS4 125, going from a two-stroke to a single-cylinder four-stroke fuel injected system.

Tuono 2003 to 2005

The RS125 Tuono was introduced in 2003 as a semi naked version of the RS125. Production ran until 2005 and was subsequently dropped from the line-up. The Tuono was essentially an RS125 with the middle and lower portions of the fairings absent and a handlebar fitted on the top yoke.

Notes

External links

RS 125
Official site. {{Aprilia motorcycles RS125 Sport bikes Motorcycles introduced in 1992 Two-stroke motorcycles