Replacement Low-Volume Insert Kit for RS-4D silencers. Non-Spark Arrested. Available as optional kit on applications requiring different sound restrictions. Decibel reduction depends on application.

Replacement Low-Volume Insert Kit for RS-4 silencers. Non-Spark Arrested. Available as optional kit on applications requiring different sound restrictions. Decibel reduction depends on application.

This kit contains the correct end cap(s), rivets and stickers/decals for replacing the end cap on your bike.

Yoshimura R&D has developed the RS4 for Off-Road Bikes a design that provides an unrivalled combination of power and a quiet exhaust note. The RS4 features a Pentagonal aluminium silencer sleeve with a carbon fibre end-cap and a two staged baffle.

The Akrapovic slip-on exhaust is simple to install and a direct replacement. The unique shape muffler dramatically improves your bike's visual appearance, whilst the exhaust itself gives more power, more torque, and less weight.

Yoshimura R&D has developed the RS4 for Off-Road Bikes a design that provides an unrivalled combination of power and a quiet exhaust note. The RS4 features a Pentagonal aluminium silencer sleeve with a carbon fibre end-cap and a two staged baffle.