Yamaha WR250R 2008 - 2021 Yoshimura Race RS-4S Slip-On Exhaust w/Stainless Muffler

Yoshimura Race RS-4S Slip-On Exhaust w/Stainless Muffler

Championship winning RS-4 Slip-On exhaust. If you're looking for serious performance, you came to the right place.
A unique design that provides an unrivaled combination of power and a quiet exhaust note. The RS-4 features a Polyresonant duplex chamber, a two-staged stepped baffle and an innovative carbon cone end cap.
Pentagonal-shaped sleeve
Front muffler cap functions as a polyresonant chamber which helps reduce noise
Two-stage stepped baffle
Turn-out carbon fiber end-cap
Pre-installed spark arrester insert
Stainless steel tail-pipe
Sound Insert/Spark Arrester Options                 
Sound Level
Volume Insert
Spark Arrestor
Included
SA-13-K
Yes
INS-18-K
No
  

Fitment Details

• Yamaha WR250R 2008
• Yamaha WR250R 2009
• Yamaha WR250R 2010
• Yamaha WR250R 2011
• Yamaha WR250R 2012
• Yamaha WR250R 2013
• Yamaha WR250R 2014
• Yamaha WR250R 2015
• Yamaha WR250R 2016
• Yamaha WR250R 2017
• Yamaha WR250R 2018
• Yamaha WR250R 2019
• Yamaha WR250R 2020
• Yamaha WR250R 2021