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Muffler Packing Material Kits

In stock
Replace or refresh your silencer packing material...

Muffler Packing Material Kits

Now you can re-pack your Hot Seat Performance or Speedwerx mufflers! We sell the packing material in the correct amount needed to refresh your exhaust based on your exhaust type as outlined below. Checking the condition of the packing should be part of a periodic maintenance program, especially if you ride in a lot of water or mud. The packing prevents the exhaust heat from transferring directly to the outer shell of the muffler, so keeping the packing dry and clean helps to ensure your exhaust will last for years to come.

All Hot Seat Performance / Speedwerx, Inc. Aluminum or Stainless Steel Body ATV/UTV Mufflers with removable endcaps. 


ATVP-MPK - 605 Grams - All 15" Silencers With Straight Through Internals
ATVP-MPK-1 - 525 Grams - All 13" Silencers With Straight Through Internals
ATVP-MPK-2 - 504 Grams - All 15" Silencers With Normal Internals
ATVP-MPK-3 - 441 Grams - All 13" Silencers With Normal Internals

NOTE: It is important to get all of the provided packing material into the silencer when replacing it. Failure to do so can result in reduced packing life and increased sound levels.


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ManufacturerSpeedwerx, Inc.
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WARNING: Cancer and Reproductive Harm-    See Proposition 65 Information for more on this Consumer Product Exposure Warning for residents of California.

These items are intended for closed-course competition only. Alteration of emissions-related components can constitute violation of federal and/or state laws. Substantial fines and penalties can result if used for other than closed-course competition use.