Aprilia RS 125 (1999-02)

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The Aprilia RS 125 motorcycle was produced between 1999 and 2002. It has a single cylinder, two stroke engine with reed valve induction and a capacity of 125cc. The bore and stroke measure at 54 x 54.5mm, with a compression ratio of 14.5:1. The bike is liquid cooled and features a Dell’Orto VHSB 34LD induction system alongside electronic ignition and electric starting. It has a maximum power of 24.8kW /34hp at 11000rpm and a maximum torque of 25Nm / 2.5 kgf-m / 18.4 lb-ft at 9000rpm. The transmission is 6-speed with final drive on a chain. The front suspension has upside-down forks, 40mm with a front wheel travel of 120mm / 4.7in. The rear suspension is a monoshock with a rear wheel travel of 120mm / 4.7in. The front brake consists of a single 320mm disc and a 4-piston caliper, while the rear brake features a single 240mm disc and a 2-piston caliper. The front tyre measures 110/70-17 and the rear tyre measures at 150/60-17. Finally, the dry weight of the bike is 115kg / 254lbs.

Technical specifications:

Make Model: Aprilia RS 125

Year: 1999 – 02


Engine: Single cylinder, two stroke, reed valves induction
Capacity: 125 cc / 7.6 cu in
Bore x Stroke: 54 x 54.5mm
Compression Ratio: 14.5:1
Cooling System: Liquid cooled
Induction: Dell’Orto VHSB 34LD
Ignition: Electronic
Starting: Electric
Max Power: 24.8 kW / 34 hp @ 11000 rpm
Max Torque: 25 Nm / 2.5 kgf-m / 18.4 lb-ft @ 9000 rpm
Transmission: 6 Speed
Final Drive: Chain
Front Suspension: Upside-down forks, 40mm
Front Wheel Travel: 120 mm / 4.7 in
Rear Suspension: Monoshock

Rear Wheel Travel: 120 mm / 4.7 in
Front Brakes: Single 320 mm discs, 4 piston caliper
Rear Brakes: Single 240 mm disc, 2 piston caliper
Front Tyre: 110/70-17
Rear Tyre: 150/60-17
Dry Weight: 115 kg / 254 lbs

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