Yoshimura Low Volume AMA Legal Insert Kit RS-2/RS-4 Mufflers

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Yoshimura Low Volume AMA Legal Insert Kit RS-2 / RS-4 Mufflers


  • Replacement Low-Volume insert kit for RS-2/RS-4 mufflers
  • AMA legal 94 dB Insert
  • Inserts do not meet FIM closed-course/competition noise requirements
  • Non-Spark arrested
  • Decibel reduction depends on application

Kit Includes:

  • Low-Volume insert tube
  • End-cap collar
  • Set Screw 

Note: Please reference your Yoshimura exhaust schematic to select the proper size.

Fitment Notes & Exceptions
This is a universal fit part; it may or may not fit without modification.
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Product Style Item # Manufacturer Product # Availability
RS-2 / 1.375" Inner Diameter 1015750 INS-11-K Available: Requires 2-3 business days of lead time prior to shipment
RS-2 / 1.250" Inner Diameter 1015819 INS-12-K In Stock: Ships next business day
RS-4 / 1.250" Inner Diameter 1015817 INS-13-K In Stock: Ships next business day