Yoshimura RS2/DS4 ADV Muffler Repack Kit Adding a new exhaust to your ride is always exciting, but maintaining that pipe is a task that is often forgotten. 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:  Stainless rivets (C3-RIVET x 16 QTY) Rivet bands (LC4.5T x 4 QTY) Muffler Decal Premium fiber packing material