The Aprilia Leonardo ST/SP 125 is a 2003 motorcycle with a four-stroke, horizontal single-cylinder, OHC, 4 valves engine and a capacity of 124.9 cc. It has a compression ratio of 12.5:1, liquid cooling, and wet crankcase lubrication with forced circulation using a lobe pump. The Tei Kei 4UC carburetor induces fuel and the ignition is electronic, with electric starting powered by a 12V, 12Ah battery. The transmission is a dry automatic centrifugal clutch with automatic transition through a V-belt final drive. The motorcycle has a front single beam with double superimposed rear cradle in high yield point tubular steel frame, with hydraulic telescopic fork with advanced wheel pin, ~A35 mm sleeves, 90mm wheel travel, and a rear suspension composed of the engine with the function of oscillating fork and attached to frame with double rod supported by silent-blocks, with two hydraulic shock absorbers with progressive elasticity, pre-load adjustable to 5 positions, and a travel distance of 90 mm / 3.5 in. The front brakes are composed of a single ~A220 mm disc with 2 pistons caliper ~A35 mm and the rear brakes consist of a single ~A190 mm disc and 2 pistons caliper ~A30 mm. The motorcycle rides on light alloy wheels with five tangential spokes.
Technical specifications:
Make Model: Aprilia Leonardo ST/SP 125
| Year | 2003 |
|---|---|
| Engine | Four stroke, horizontal single cylinder, OHC, 4 valves |
| Capacity | 124.9 cc / 7.6 cu in |
| Bore x Stroke | 62 x 50 mm |
| Compression Ratio | 12.5:1 |
| Cooling System | Liquid cooled |
| Lubrication | Wet crankcase, forced circulation with lobe pump |
| Induction | Tei Kei 4UC carburetor |
| Ignition | Electronic |
| Starting | Electric |
| Battery | 12V, 12Ah |
| Transmission Clutch | Dry automatic centrifugal |
| Transmission | Automatic |
| Final Drive | V-belt |
| Frame | Front single beam with double superimposed rear cradle in high yield point tubular steel |
| Front Suspension | Hydraulic telescopic fork with advanced wheel pin, ~A35 mm sleeves, 90mm wheel travel, |
| Front Wheel Travel | 90 mm / 3.5 in |
| Rear Suspension | Engine with function of oscillating fork, attached to frame with double rod supported by silent-blocks; two hydraulic shock absorbers with progressive elasticity, pre-load adjustable to 5 positions |
| Rear Suspension | 90 mm / 3.5 in |
| Front Brakes | Single ~A220 mm disc, 2 piston caliper ~A35 mm |
| Rear Brakes | Single ~A190 mm disc, 2 piston caliper ~A30 mm |
| Wheels | Light alloy with five tangential spokes |
