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  • Brand:Yoshimura
  • Model:123410D520

Price : $683.16 $649.00

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

*** Available for back order - Do not order if you can not wait for restock to arrive ***

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 Full System for the all-new Honda CRF300L and Rally edition, the results were fantastic! The full system gives the new CRF 5.9% max HP while improving the power across the entire spectrum enabling the 286cc engine to optimize performance while saving significant weight.

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

Proudly made in the USA!

  • 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
  • RS-4 Stainless Full System weight 9.5lbs vs Stock full system weight 12.3lbs.

. . . . .

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