CRF250L / Rally Yoshimura RS-4 Full Exhaust System
CRF250L / Rally Yoshimura RS-4 Full Exhaust System

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Everything you need to unleash the full potential of your Honda CRF250L or CRF250L Rally! The Yoshimura RS-4 Muffler is a unique design with predicated power and a quiet earthy exhaust note that speaks volumes for performance. This RS-4 features all the benefits of Yoshi's original RS-4 muffler, but with a unique turned-out end-cap, designed to direct exhaust heat and gases away from the bike's components. To top-it-off, they embossed the Yoshimura "347" logo in the carbon for a clean look. A heat-shield was also added to the poly-resonant chamber to keep rider and passenger legs from exhaust heat. With all its benefits in mind, the RS-4 was an obvious choice for the CRF250L.

Fitment: 2017+ Honda CRF250L and Rally

Weight Savings:
CRF250L Stock Muffler w/ Heat Shield: 13.50 lbs
CRF250L Stock Header w/ Heat Shield: 3.12 lbs
CRF250L Stock FULL SYSTEM: 16.62 lbs

CRF250L Yoshimura RS-4 Muffler w/ Heat Shield: 7.80 lbs
CRF250L Yoshimura RS-4 Header: 1.46 lbs
CRF250L Yoshimura RS-4 FULL SYSTEM: 9.26 lbs


  • Yoshimura RS-4 Muffler with turned-out end cap
  • Yoshimura Stainless Steel Mid-Pipe
  • Yoshimura Stainless Steel Header
  • Yoshimura RS-4 Low volume insert
  • All installation hardware
  • Step-by-step instructions
  • Yoshimura Part #123400D520 (2017+ CRF250L / Rally)

    ** OPTIONAL: Yoshimura Heat Shield (adds to package price):
  • Bolts up to Yoshimura muffler for extra heat protection
  • Made with USA made aluminum
  • Black anodized with laser etched logo
  • Must have for the CRF250L passenger
  • Part #990BG123400

  • ** AVAILABLE - Usually leaves warehouse in 2-3 business days.

    NOTE: This item cannot be shipped to California

    CRF250L / Rally Yoshimura RS-4 Full Exhaust System
    YOSH-123400D520Retail Price: $659.00Our Price: $659.00
    Bike Model Year: 
    Heat Shield : 

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