The Aprilia RS125 is a GP derived replica sport production motorcycle. It is powered by a single cylinder 2-stroke,Nikasil coated aluminium cylinder block, liquid cooled 124.8 cc Rotax engine.
Aprillia has had many Grand Prix victories in the 125 cc and 250 cc2-Stroke classes. This racing experience has been used by Aprilia to produce updated and improved versions of the RS125.