Yoshimura R&D of America, Inc.

SOUND INSERT KIT ALPHA / ALPHA T / R77 Muffler (INS-35-K)

SOUND INSERT KIT ALPHA / ALPHA T / R77 Muffler (INS-35-K) - Main image
SOUND INSERT KIT ALPHA / ALPHA T / R77 Muffler (INS-35-K) - View 2
$28.49 $45.95 In stock

Category: Replacement Service Parts

  • Replacement Low-Volume Insert / dB Killer Kit for select Mufflers
  • Available as optional kit on applications requiring different sound restrictions
  • Decibel reduction depends on 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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Delivery costs

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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 (4.6 / 5 · 5 reviews)

Henry ★★★★★

Took less than 20 minutes to swap out the old insert, and the decibel drop is noticeable without killing the exhaust note entirely. Exactly what I needed for a quieter neighborhood ride.

Mia ★★★★★

I was skeptical about installation, but the included hardware made swapping the insert straightforward on my R77. The tone is noticeably deeper now without being obnoxiously loud.

Timothy ★★★★★

Ordered this to tone down my R77 for neighborhood-friendly mornings. The install was straightforward and it fits perfectly in the muffler body. Noticeably less bark without killing the overall sound character.

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