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Yoshimura RS-4 Signature Series Slip-On - Aluminum Muffler - XF-1-190741



Stainless Steel Tailpipe/Aluminum Muffler/Carbon Fiber End Cap
Delivers huge power at a very light weight
Offers better handling thanks to a lower centralized mass coefficient
Uniquely-styled pentagonal muffler body with a carbon fiber cone end cap
Front cap design functions as a polyresonant chamber to lower dB output while improving mid- to top-end power
Two-staged, stepped baffle
Tapered headpipe delivers optimal flow and performance
Titanium systems include non-spark-arrested 99 dB motocross insert (unless noted)
Mufflers available with glossy carbon fiber, satin titanium or brushed aluminum sleeve
Stainless systems come with 94 dB insert installed (meets AMA competition requirements), 2 meter Max insert in the box

Product Series

Application List

2018 - 2019KTM250 EXC-F
2016 - 2018KTM250 XC-F
2016 - 2018KTM350 SX-F
2016 - 2018HusqvarnaFC350
2016 - 2018HusqvarnaFC250
2016 - 2018KTM250 SX-F
2017 - 2018HusqvarnaFX350

Shipping Information

  • Item Requires Shipping
  • Free Ground Shipping (1 - 5 Days)