Yoshimura 500/450/350/250 Sx F Rs-4 Stainless Slip-On Exhaust 263502d321

The work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current generation RS-4 based on that research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance, while a carbon cone end cap finishes off its innovative styling.

• Pentagonal-shaped sleeve
• Front muffler cap functions as a polyresonant chamber which helps reduce noise
• Two-stage stepped baffle
• Carbon fiber end-cap
• Stainless steel tail-pipe

KTM 250SX F 2011

KTM 250SX F 2012

KTM 250SX F 2013

KTM 250SX F 2014

KTM 250SX F 2015

KTM 350EXC F 2011

KTM 350EXC F 2012

KTM 350EXC F 2013

KTM 350EXC F 2014

KTM 350EXC F 2015

KTM 350SX F 2011

KTM 350SX F 2012

KTM 350SX F 2013

KTM 350SX F 2014

KTM 350SX F 2015

KTM 350XC F 2014

KTM 350XC F 2015

KTM 450SX F 2011

KTM 450SX F 2012

KTM 450SX F 2013

KTM 450SX F 2014

KTM 450SX F 2015

KTM 450SX F FACTORY EDITION 2012

KTM 450XC F 2013

KTM 450XC F 2014

KTM 450XC F 2015

KTM 450XC W 2012

KTM 450XC W 2013

KTM 450XC W 2014

KTM 450XC W 2015

KTM 500EXC 2012

KTM 500EXC 2013

KTM 500EXC 2014

KTM 500EXC 2015

KTM 500XC W 2012

KTM 500XC W 2013

KTM 500XC W 2014

KTM 500XC W 2015