[mlewis]

Are there any better materials than that loose fiberglass packing to use for lining the inside of a typical slip-on muffler, and where might I find it?

 

[trooper113]

Sure.....sheet exhaust fiberglass packing at most any Honda or Yamaha store.

T113

 

[Martin64]

I think I even seen some at Cycle Gear.....

 

[ohiomotoxer]

Regular fiber G, and the fiber G that dirt bikes use,will not hold up to the exhaust pulse wave let alone the heat generated of a V Twin, once the packing blows out the exhaust pulse wave has no place to dampen, thus the sound wave bounces in the chamber and actually causes an exhaust flow restriction. Another reason not to remove your packing.

I use RACE TEX in all my bikes.
http://www.racetools.com/muffler-landing.php?primary=products&secondary=muffler

This material is sewn into a pillow and will not blow out or degrade due to heat, it will last for years.

 

[mlewis]

Thanks for the great leads! Happy Holidays, Mike