Yoshimura RS-4 Signature Series Dual Muffler Full Exhaust System

Item Number: 339278


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Product Description


Yoshimura RS-4 Signature Series Dual Muffler Full Exhaust System

Yoshimura Signature Series exhaust components are the answer for riders faced with ever-tightening noise and emissions regulations at the federal level. All Signature Series components are independently tested, documented, and marked as required by state and federal regulations as CARB/EPA-compliant.

Yoshimura's RS-4 twin pipe exhaust is completely fabricated by hand and TIG-welded to perfection. Each kit starts with a stainless steel header and Y pipe mated to twin RS-4 mufflers for incredible looks and performance. The kit also comes with a custom Yoshimura kick-stand.

  • RS-4 twin pipe exhaust
  • Kevin Schwantz supermotard design
  • Pentagonal-shaped sleeves
  • Front muffler cap functions as a polyresonant chamber which helps reduce noise
  • Two-stage stepped baffles
  • Carbon fiber end-caps
  • Stainless steel header, Y-pipe, and tail pipes
  • Includes instructions and all required installation hardware

Spec Details
CARB Approved Yes
Country of Origin USA
Header Construction 304-L Stainless Steel
Muffler End Cap Carbon Fiber
Muffler Sleeve Varies (make selection above)
USFS Spark Arrestor No

Vehicle Fitment

Fitment is guaranteed or your money back plus free return shipping. Don't waste time installing a product that doesn't fit. We worked hard ensuring that this product is an exact fit on the vehicles listed below.


  • DR-Z400S 2000-2015
  • DR-Z400SM 2005-2009, 2013-2015

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