Product image 1RS-4 Premium Muffler Repack Kit 800g
Product image 2RS-4 Premium Muffler Repack Kit 800g

*Product may vary by application

RS-4 Premium Muffler Repack Kit 800g


Regular price $66.95



over $100

Repair Services

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

Off-road systems need to be repacked after 6-8 hours of use, or after each Race. Repacking your muffler at the suggested intervals is essential for your exhaust to perform the way it was designed. Dirty packing restricts airflow from your motor, which results in a loss of power and degradation of sound. Repacking your muffler allows for freer airflow from your motor, which restores lost power and improves the exhaust sound.

  • Stainless Rivet (C3-RIVET x 8 QTY)
  • Rivet Band (LC4.5T x 2 QTY)
  • RS-4 End-cap Decal (RS4-NB002 x 1 QTY)
  • Silent Sport Premium Packing Material (800g)

. . . . .

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


    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.

    Information (Enter as Applicable)

    Race Information

    Rider/Purchaser Information


    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.