The Aprilia RS 125 is a race

motorcycle A motorcycle (motorbike, bike; uni (if one-wheeled); trike (if three-wheeled); quad (if four-wheeled)) is a lightweight private 1-to-2 passenger personal motor vehicle Steering, steered by a Motorcycle handlebar, handlebar from a saddle-style ...

manufactured by

Aprilia Aprilia is an Italian motorcycle and Scooter (motorcycle), scooter manufacturer in Noale, Italy, founded by Alberto Beggio. History Early days Aprilia, named after the Pre-war automobile, pre-war Lancia Aprilia, was founded after the Seco ...

to race in the Grand Prix motorcycle World Championship, built to replace the old

Aprilia AF1 The Aprilia AF1 is a sports motorcycle, designed, developed and built by Aprilia Aprilia is an Italian motorcycle and Scooter (motorcycle), scooter manufacturer in Noale, Italy, founded by Alberto Beggio. History Early days Aprilia, nam ...

. It was debuted in , and it had many upgrades since. The bike won ten World Championship (one rebranded as

Derbi Derbi is a manufacturer of motorcycles, scooters, mopeds and recreational all-terrain vehicles produced by Nacional Motor S.A.U., currently integrated into the Italian (2009) Piaggio Group. History Derbi's origins began with a little bicycle wo ...

and one as

Gilera Gilera is an Italian motorcycle manufacturer founded in Arcore in 1909 by Giuseppe Gilera (1887–1971). In 1969, the company was purchased by Piaggio. History Giuseppe Gilera founded his self-named motorcycle company in 1909 (aged 22) near M ...

). In 1991 the original tank was 12 liters, which became 13 in 1994 and 14 in 1995; the original carburetor was a Dell'Orto VHSB 39, which was upgraded to a Dell'Orto VHSD 41 in 1996 and to a Dell'Orto VHSG 42 in 2006. Since 1996 the brake specification has gone from a single front brake disc 300 mm in carbon steel to a single brake in carbon, with a diameter of 275 mm disc; in 2000 the bike returned to a double disc front braking system . Since 2007, the bike is available in a new version, called RSA 125, for some riders. The RSA has many new details than the previous model, including improvements in the intake system and the engine. The old version, with some updates from the RSA, is still used as a customer bike and it is called the RS 125 LE. The RSA (and the "evolution" version of the RS 125) are used not only by Aprilia, but also by

and

(rebranded as such), since all three brands belong to the

Piaggio Piaggio Group () is an Italian motor vehicle manufacturer, which produces a range of two-wheeled motor vehicles and compact commercial vehicles under five brands: Piaggio, Vespa, Aprilia, Moto Guzzi and Derbi. Its corporate headquarters are ...

group. {{Grand Prix motorcycles

See also