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Yoshimura

Yoshimura R&D Service

Yoshimura Racing

Model
Year

Exhaust System, Yoshimura RS-4S

EPA   Made in USA WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
CRF300L '21 - '26

Race, RS-4, Slip-On, Stainless Steel with Carbon Fiber End Cap

  • Pentagonal-shaped muffler
  • Maximized internal volume
  • Polyresonant duplex front chamber
  • Stepped, two-stage core baffle
  • Spark Arrestor/Sound Insert Compatible
Choose System
Ships in 3-5 business days
$598.95
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Spark Arrester - Yoshimura RS-4

CRF300L '21 - '26
  • Updated version with weldnut inside of insert makes installation/removal easier
  • Replacement USFS Approved Spark Arrester for RS-4 Mufflers with "Turn-out" end-cap.
  • Available as optional Spark Arrester on applications not originally equipped with a Spark Arrester
  • Kit Includes:
    • Spark Arrester Insert
    • End-cap collar
    • Set screw
Add Anti-Seize
Ships in 3-5 business days
$44.95
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