 Welcome.
Welcome to Bristol Core's website. We are an American manufacturer specializing in muffler packing for motorsport.
If you are a rider or builder looking for high quality material to pack a muffler with, you've come to the right place.
Off road riding can be torture on muffler packing. We offer packing kits and materials designed for the heat and revs of two stroke (RaceTEX) and four stroke (Spec 30) motocross, ATV, UTV and adventure bikes.
Riding a big twin and need to repack? Maybe your muffler is getting too loud and what originally sounded great has developed a sharp "crack" sound. Take a look at our new SPEC 30 HD Kits. These combine the highest quality steel wool fiber and our high-end SPEC 30 for a packing system that will hold up to many, many miles of riding.
Sportbikes with aftermarket mufflers sound awesome, until the packing blows out and it starts sounding like a big empty tin can. We can help you restore the rip and roar with materials that will last.
If you need some assistance deciding what materials or kit will work best for your application, feel free to either call us at (585)-919-0302 or send an e-mail to info@bristolcore.com. We're available Monday through Friday 8am to 5pm Eastern.

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Core Wrap Kit - 19"
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Core Wrap Kit - 15"
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Our Price: $35.95
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Our Price: $30.95
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This high quality wool core wrap will add a new level of durability to your muffler packing.
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Our new steel wool Core Wrap Kits are giving riders a new way to think about packing - less often!
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Spec 30 Universal Pillow Kit - 19" Length
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Our Price: $44.95
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This is the longest lasting muffler repack kit available! Durability was our goal when we began developing Spec 30 Packing.
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