Yoshimura R&D of America, Inc.

SOUND INSERT KIT RS-12 Muffler, 1.500" (INS-39-K)

SOUND INSERT KIT RS-12 Muffler, 1.500" (INS-39-K) - Main image
$40.77 $59.95 In stock

Category: Replacement Service Parts

  • Replacement Low-Volume Insert Kit for RS-12 Mufflers
  • Non-Spark Arrested
  • Available as optional kit on applications requiring different sound restrictions
  • Decibel reduction depends on application
  • Please see our Insert Chart to confirm fitment for your application
      • Kit Includes:
    • Low-Volume Insert Tube
    • End-cap collar
    • Set screw

*If you have any questions about fitment or applications, please call our Sales Department at 1-800-634-9166.

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Standard Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

Express Shipping: Handling (business days) 0–1; Transit (business days) 7–15.

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Standard Shipping · United States: $0.00

Express Shipping · United States: $3.99

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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.6 / 5 · 5 reviews)

Natalie ★★★★★

Installed this RS-12 insert kit and the sound difference is noticeable, especially at low rpm where it was previously loud. The non-spark arrested design wasn't an issue for my application. Very pleased with how easy the swap-out was.

Leo ★★★★★

The low-volume insert kit made a real difference on my RS-12 setup, and the fit was precise right out of the box. Installation took about ten minutes, and the muffler now handles the sound restrictions exactly as needed.

Aurora ★★★★★

Swapped this in to meet a local sound ordinance and the kit was a perfect fit for the RS-12's existing housing. The decibel drop is noticeable, though the exact reduction will vary with your setup—still, it took the edge off without killing the flow.

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