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Yoshimura WR450F 12-15 RS-4 Stainless Full Exhaust, W/ Aluminum Muffler

The RS-4 offers a unique design that provides an unrivaled combination of power and a quiet exhaust note.

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
  • Turn-out carbon fiber end-cap
  • Stainless steel header and tail-pipe
  • Repack 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 2012
          • Yamaha WR450F 2013
          • Yamaha WR450F 2014
          • Yamaha WR450F 2015
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          Yoshimura WR450F 12-15 RS-4 Stainless Full Exhaust, W/ Aluminum Muffler

          SKU: YO-234700D320
          Regular price $1,999.99 $1,899.99 5% off
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          Yoshimura WR450F 12-15 RS-4 Stainless Full Exhaust, W/ Aluminum Muffler

          The RS-4 offers a unique design that provides an unrivaled combination of power and a quiet exhaust note.

          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
          • Turn-out carbon fiber end-cap
          • Stainless steel header and tail-pipe
          • Repack 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 2012
                  • Yamaha WR450F 2013
                  • Yamaha WR450F 2014
                  • Yamaha WR450F 2015