MUFFLERS NEED REPACKING from time-to-time. The packing slowly burns out and the bike becomes louder and louder until you can't handle the noise anymore and you need to repack your muffler. KTM minibikes had this style of bolt together muffler for quite a few years. This style of pipe was especially common on the KTM SX 50s which became exceptionally annoying when the packing was all burnt out.
1 MAKE YOUR MARK
Lay the muffler out on a clean work
