This product has been discontinued

Yoshimura RS-4 Off-Road Full Exhaust Aluminum Muffler - 228400D320


  • Manufacturer: Yoshimura


Yoshimura RS-4 Comp-Series Full System - Aluminum Muffler

  • The RS-4 not only increases power and is light, but it also has a lower centralized mass coefficient to provide better handling.
  • The RS-4 is pentagonal shaped muffler that features a carbon fiber cone end cap, two staged stepped baffle and striking good looks. A tapered header pipe design is used for optimal flow and performance. The RS-4 muffler features a new front cap design that functions as a polyresonant chamber. This design makes for a quieter muffler with improved mid to top end power.
  • Stainless Systems come with a USFS approved Spark Arrested insert installed in the muffler.
  • This Full System comes with a stainless steel header and mid-pipe, aluminum muffler sleeve, installation hardware, and detailed instructions to get you moving!

Installation Instructions

Manufacturer Part Number: 228400D320