MADE IN THE UNITED STATES OF AMERICA

YAMAHA YZ250F 2014-18/ YZ250FX/WR250F 2015-18 Sig. RS-4 SO SS-AL-CF

Signature SeriesThe work that went into developing the RS-4 muffler has paid big dividends in Off-road Racing; winning multiple Supercross and Motocross titles since it's inception. We've developed the current generation RS-4 based on that research & development, and the result is a unique design that provides an unrivaled combination of power and quiet exhaust tone. The RS-4 features a Polyresonant duplex chamber and two-staged stepped baffle for increased performance, while a carbon cone end cap finishes off its innovative styling.


  • Pentagonal-shaped sleeve
  • Front muffler cap functions as a polyresonant chamber which helps reduce noise
  • Two-stage stepped baffle
  • Carbon fiber end-cap
  • Stainless steel tail-pipe
  • Weight: 0.3 lbs lighter than stock configuration
  • Repack Kits, optional Inserts are available for all models
  • SKU: 231012D320
  • Category: Signature Series Exhaust Systems
  • Emissions Compliance Declaration: QUALIFIED MANUFACTURER DECLARED "REPLACEMENT PART"
    425
  • $425.00

In Stock

Compatible With These Models

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