Aprilia's RS4 125 is a very capable 125cc machine. Our development engineers decided they could improve it, and have developed this discrete style silencer. The silencer and tailpipe are available as a Stainless finish only.
Developed to use the bikes original fuelling settings the exhaust not only makes the bike look and sound better but also improves the power delivery and reduces the weight.
This is not a true Factory style silencer, it is a discrete style silencer developed specifically for the RS4 125.