Yoshimura R&D of America, Inc.

SOUND INSERT KIT RS-12 Muffler, 1.625" (INS-38-K)

SOUND INSERT KIT RS-12 Muffler, 1.625" (INS-38-K) - Main image
SOUND INSERT KIT RS-12 Muffler, 1.625" (INS-38-K) - View 2
$37.14 $58.95 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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Returning an item

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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 (5.0 / 5 · 5 reviews)

Joshua K. ★★★★★

I was pleasantly surprised how easy this kit was to install on my older RS-12—the 1.625" insert slid in with no modifications needed. It dropped the bark just enough to keep the neighbors happy without killing all the low-end tone. For a non-spark arrested option, it’s exactly what I needed for my j

Brian L. ★★★★★

My shop had to hit a stricter noise ordinance this summer, and the insert kit's decibel reduction finally made the RS-12 pass without swapping the whole muffler. The low-volume design is a straightforward bolt-in, and the install took under an hour. Just note it's not spark arrested, so I kept that

Emma ★★★★★

Finally got the insert kit installed on my RS-12 and the sound reduction is exactly what I needed for my neighborhood. The 1.625" size fit perfectly without any modifications.

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