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Product image 1SOUND INSERT KIT 99db RS-4 Muffler, 1.625" (INS-10-K)
Product image 2SOUND INSERT KIT 99db RS-4 Muffler, 1.625" (INS-10-K)

*Product may vary by application

SOUND INSERT KIT 99db RS-4 Muffler, 1.625" (INS-10-K)

SKU: INS-10-K

Regular price $35.95

MADE IN USA

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Same day shipping on In Stock items placed Mon-Fri by 1:00 pm PST. Please contact sales@yoshimura-rd.com for ETA's on Reserve Now / Pre-Order Items.

WARNING: Cancer and Reproductive harm - www.p65warnings.ca.gov


  • Replacement Low-Volume Insert Kit for RS-4 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.

. . . . .

This product was designed to fit on a standard equipped motorcycle, as delivered from the factory. OE and aftermarket accessories not found on a bike as delivered from the factory may not be compatible with this product.

Attention international customers: This product was designed and tested to be compatible with vehicles in the U.S. marketplace only. Compatibility, including fitment and performance, may vary by marketplace.

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    Race series product restriction and affirmation

    Warning:

    The RACE SERIES product you are purchasing removes, renders inoperative, or bypasses required elements of the emission control systems of EPA, certified motorcycles of motorcyle engines and may only be installed on motorcycles that are restricted to closed course competition. Installation of this product on a motorcyle that is ridden on a public street, highway, or public lands violates the tampering and defeat device provisions of the Clean Air Act & 203(a)(3)(A) and/or & 203(a)(3)(B) and may subject you to a civil penalty of up to $37,000.

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    By clicking below, I affirm:
    1. that i have read the above warning;
    2. that any information I have entered is accurate; and
    3. that any motorcycle on which I install the RACE SERIES product will be restricted to closed course competition and will not be ridden on any public street, highway or public lands.
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