[3] 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 or kick start on the left hand side and analogue gauges.

[7] 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.

It has angular fairings, two headlight bulbs, a digital gauge, and multispoke Marchesini-styled[clarification needed] rims.

In 2008, Aprilia changed the electronics from Nippon-Denso to a EFI Technology ECU and introduced the new Dell'Orto 28 mm VHST CD carburetor to meet the more stringent EURO3 emissions standards.

The Tuono was essentially an RS125 with the middle and lower portions of the fairings absent and a handlebar fitted on the top yoke.