If you are dealing with a saturated exhaust or a bike/car that has suddenly become obnoxiously loud, an afternoon spent doing a proper repack will restore your vehicle's performance and tone.

Pull the inner core and the old packing out of the canister. If the packing has never been changed, it may be brittle, black, and caked in carbon. Throw this away immediately. Use a wire brush to clean any carbon buildup off the perforated metal center core. Step 4: Wrap the Core with New Packing

The most common and affordable option. It is great for standard street use but degrades faster under extreme heat.

Exhaust packing usually consists of fiberglass, ceramic wool, or specialized synthetic fibers wrapped around a perforated inner core. This material absorbs sound waves and withstands extreme heat. Over time, several factors cause this material to fail:

Performing a "smoking repack"—the process of replacing burnt-out packing material while addressing smoking issues—is a critical maintenance task for any enthusiast. This comprehensive guide covers everything you need to know about getting your exhaust back to midnight-run perfection. Understanding Exhaust Packing Failure

High-pressure exhaust pulses physically push the packing material out of the tailpipe over time.

Constant exposure to exhaust gases exceeding 1,000°F eventually crystallizes and disintegrates the fibers.