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Feature

- Pentagonal-shaped sleeve with Alum. Sleeve, Stainless Tailpipe & Carbon End-Cap
- Front muffler cap functions as a polyresonant chamber which helps reduce noise
- Two-stage stepped baffle
- Weight: 0.3 lbs lighter than stock configuration
Fits: 2014-2018 YAMAHA YZ250 / 2015-2016 YAMAHA YZ250FX / 2015-2016 YAMAHA WR250F

Description

231012D320 YOSHIMURA RS-4 Slip-on Exhaust SS-AL-CF, Fits: 2014-2018 YAMAHA YZ250 / 2015-2016 YAMAHA YZ250FX / 2015-2016 YAMAHA WR250F. The 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. Features: 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