Yoshimura R&D of America, Inc.

SOUND INSERT KIT AT2 RACE MUFFLER (INS-37-K)

SOUND INSERT KIT AT2 RACE MUFFLER (INS-37-K) - Main image
$41.37 $68.95 In stock

Category: Replacement Service Parts

Specifically made for the YZF-R7 AT2 Titanium Race Full System

  • Only Fits AT2 2.375" Titanium Race Mufflers "Big Outlet"
  • Will NOT fit standard AT2 (2.25”) muffler outlets
  • Non-Spark Arrested
  • Kit Includes:
    • Race 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 (4.4 / 5 · 5 reviews)

Zoe K. ★★★★★

The bigger outlet on this race muffler made instant sense once I heard the deeper bark from my YZF-R7 -- it's exactly what I needed for the AT2 system. Packed tight and fit perfect without any wrestling, just like the listing described.

Kevin ★★★★★

Took about 15 minutes to swap in, and the non-spark arrested design gives it a noticeably deeper, more aggressive tone under acceleration.

Claire ★★★★★

Took a gamble that these would fit my titanium race system’s big outlet, and the 2.375” sizing is spot on. The kit came complete with everything needed, so swapping the old insert took under ten minutes. Engine sounds a touch rowdier now, exactly what I was after.

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