Unlike their stock 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. Dirty packing restricts airflow from your motor, which results in a loss of power and degradation of sound. Having your muffler repacked allows for freer airflow from your motor, which restores lost power and improves the exhaust sound.

Repacking your muffler at the suggested intervals is essential to allowing your exhaust to perform the way it was designed. At Yoshimura, we use advanced space-age fiberglass packing material for our mufflers, along with high-strength stainless steel rivets.

Yoshimura R&D offers two options for muffler repacking:

First, we offer muffler repacking as a service. Simply call one of our expertly-trained sales representatives, who will assist you with cost and shipping information, as well as answer any other questions you may have. Once your muffler arrives at our factory, our team will remove and dispose of your old packing material and replace it with our proprietary fiberglass packing material. Turn-around time is approximately 2 business days, excluding shipping/transit times.

Alternatively, if you are comfortable repacking your own muffler, we sell our packing material and rivets as standalone products. We also provide a free instructional how-to video on how to repack your muffler.

To schedule a repacking service or to purchase packing materials and rivets, please contact our sales team at (800) 634-9166.