YOSHIMURA RS-4 Signature Series Silencer - KTM 450SX-F/Husqvarna FC450 Remove this split pin and

Remove this split pin and the locating dowel

Triple layer construction (as opposed to a single thick layer) allows layers to move relative to one another further improving impact performance

this has been calculated to balance and dampen against the effects of handlebar vibration

Full wrap-around (2-point mount)

HDR: Standard reinforced chain for 50cc and Trail/Cross smaller engine

YOSHIMURA RS-4 Signature Series Silencer - KTM 450SX-F/Husqvarna FC450 Remove this split pin andKTM and Husqvarna have introduced LE and Rockstar Editions for 2018 and now Yoshimura is ready to add to the experience of these awesome dirt bikes. Yoshimura developed the RS 4 in the R&D lab called the Motocross track. The RS 4 boasts its own resonance chamber and utilizes its volume and a unique baffling system to create the sound and power that is purely Yoshimura. With 450's it's not all about creating more power, it's about creating more usable