Yoshimura R&D of America, Inc.

RS-4 Premium Muffler Repack Kit

RS-4 Premium Muffler Repack Kit - Main image
RS-4 Premium Muffler Repack Kit - View 2
$49.74 $78.95 In stock

Category: Replacement Service Parts

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.

  • Includes:
  • Silent Sport Premium Packing Material
  • RS-4 End-cap and Canister Decal (RS4-NB003 & RS4-NB004 x 1 QTY)
  • RS-4 Badge (RS4-NB001 x 1 QTY)
  • Rivet Band (LC4.5T x 2 QTY)
  • Stainless Rivet (C3-RIVET x 8 QTY)
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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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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)

Charlotte ★★★★★

Finally got around to repacking after eight hours of trail riding—the fiberglass mat was easy to cut and fit snugly inside the can. My bike sounds crisp and clean again, exactly how it should after a race.

Steven ★★★★★

Pulled out the old packing after about seven hours of riding, and this kit had everything I needed to get the job done in under an hour. The pre-cut strips saved me from having to measure and cut anything myself.

Joseph ★★★★★

The fiberglass wrap in this kit was exactly the right length, so I didn't have to wrestle with cutting it down in the middle of a race weekend. My exhaust sounds crisp again after following the 6-8 hour repack guide, and it takes just a few minutes to get the job done right.

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