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  • Brand:Yoshimura
  • Model:123412D520

Price : $577.89 $549.00

CRF300L\'21-22 - Yoshimura RS-4 Slip On Exhaust System 1CRF300L\'21-22 - Yoshimura RS-4 Slip On Exhaust System 2CRF300L\'21-22 - Yoshimura RS-4 Slip On Exhaust System 3CRF300L\'21-22 - Yoshimura RS-4 Slip On Exhaust System 4

Introducing the RS-4 for 2021 Honda CRF300L and Rally dual-sport motorcycles.

One of the fastest growing segments of the motorcycle market is the Dual Sport segment and we love the smaller bore dual sport bikes as they are an entry level to get more riders into the sport.

We stepped up to the plate and developed our RS-4 Slip-on for the all-new Honda CRF300L and Rally edition, the results were fantastic! Our slip-on provides 14.2% more max power on the bottom end of the spectrum paired with equal top end power as the stock unit.

The sound of the RS-4 is unmistakable, on idle and under load the exhaust note is music to ones ears. Also available is our USFS approved spark arrestor for those riders wishing to take to the trails in the great outdoors. Part # SA-13-K-1

  • 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 tail-pipe
  • RS-4 Stainless Slip-on weight 7.6lbs vs Stock muffler weight 10.0lbs.

. . . . .

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.


If you're looking for that competitive edge, look no further than our Race Series. These exhaust systems are designed with nothing but power in mind. Each Race Series system is developed in accordance with noise compliance regulations imposed by most racing sanctioning bodies worldwide.

NOTE: To ship to California addresses a signed waiver for off-road use only is required

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