Yoshimura RS-4 Stainless Exhaust System

R 13 499.00



Yoshimura RS-4 Stainless Exhaust System

The Yoshimura RS-4 full exhaust system has been put to the test and has proven its capabilities at the highest level of competition. In 2010 the RS-4 helped Ryan Dungey claim the AMA 450 Supercross and Motocross championships in his rookie season. The Yoshimura-backed GEICO Honda team also took home both East and West Coast Supercross Lites titles in 2012 using the Yoshimura RS-4 exhaust.

Utilizing the same R&D that helped bring success at the national level has resulted in a unique exhaust design that provides an unrivaled combination of power and quiet exhaust note. The Yoshimura RS-4 Pipe features an innovative carbon cone end cap, a two staged stepped baffle, and a polyresonant duplex chamber which acts as a muffler within a muffler to help save weight and centralize mass.

Nearly all Yoshimura exhaust systems that have won Motocross or Supercross championships are members of the Yoshimura Signature Series. All Signature Series pipes have been tested, documented, and marked as required by federal and state regulations. Working in conjunction with factory race teams has allowed Yoshimura to increase performance, keep sound levels to a minimum and centralize mass. The end result is a exhaust system that gives you an unparalleled competitive advantage.


  • Pentagonal-shaped sleeve
  • Polyresonant front muffler chamber which helps reduce noise
  • Two-stage stepped baffle
  • Yoshimura Signature Series muffler
  • Carbon fiber end-cap
  • Stainless Steel or Titanium Head pipe
  • CARB/EPA tailpipe emissions compliant
  • 100% Made in the USA

Additional information


CRF250L 2013–2016, CRF250L 2017, CRF250L Rally 2017, CRF250R 2010, CRF250R 2011–2013, CRF450R 2009–2010, CRF450R 2011–2012, FC450 2016, 250 SX-F 2016–2017, 250 SX-F 2012, 250 SX-F 2013–2015, 250 SX-F Factory Edition 2015, 250 XC-F 2016–2017, 350 EXC-F 2012, 350 SX-F 2016, 350 SX-F 2013–2015, 350 SX-F 2011–2012, 350 XC-F 2016, 350 XC-F 2014–2015, 450 SX-F 2016, 450 SX-F 2013–2015, 450 SX-F Factory Edition 2012–2014, 450 XC-F 2013–2015, KX250F 2010–2016, KX250F 2017, KX450F 2009–2015, KX450F 2016–2017, DR-Z400S 2000–2017, DR-Z400SM 2000–2017, RMX 450Z 2010–2011, RMZ250 2010–2016, RMZ450 2008–2016, WR450F 2012–2015, YZ250F 2007–2013, YZ250F 2014–2016, YZ250FX 2015–2016, YZ450F 2010–2013, YZ450F 2014–2017


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