Tags: Motorcycle.
The Aprilia RS4 125 is a 125cc class sportbike manufactured by Italian motorcycle firm Aprilia. The RS4 125 is a four-stroke variant of the extremely popular RS125 two-stroke race replica. It is marketed as a tamer more practical option to the more aggressive track-oriented RS125. The bike is based on the four-stroke version of the Derbi GPR125. A race kit is available from the manufacturer that boosts power from the standard 15bhp to 25bhp.
