Yoshimura YZ450F 14-17/FX 16-17/WR450F 16-18 RS-4 Stainless Slip-On Exhaust, w/ Aluminum Muffler

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.

• 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-pipeRepack Kits, optional Inserts and Spark Arresters are available for all models

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.

Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

Fitment:

• Yamaha WR450F 2016
• Yamaha WR450F 2017
• Yamaha WR450F 2018
• Yamaha YZ450F 2014
• Yamaha YZ450F 2015
• Yamaha YZ450F 2016
• Yamaha YZ450F 2017
• Yamaha YZ450FX 2016
• Yamaha YZ450FX 2017