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Published on Aug 27, 2012
Maintain your exhaust systems longevity and performance by following our step-by-step instructions for re-packing your Yoshimura RS-4 and RS-4D muffler.
Do you remember when your muffler was last repacked?
If not, it's probably time...
Unlike their OEM counterparts, Yoshimura Road exhaust systems need to be repacked every 7,000 - 10,000 miles, while Off-road systems need to be repacked after 10-15 hours of use. 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.
At Yoshimura, we use advanced space-age fiberglass packing material for our mufflers, along with high-strength stainless steel rivets. We also include new badging to freshen up your muffler's appearance.