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Fix any loud two stroke motorcycle exhaust by replacing the old fiberglass packing . As two stroke motorbikes age, the silencer packing gets saturated with oily carbon build up and it looses its ability to deaden sound effectivley . This step by step video shows how to disassemble, clean ,re-wrap and reassemble most any two stroke motorcycle exhaust silencer. A fairly easy job that requires very few tools and can be accomplished by most backyard mechanics .The silencer repaired in this video is from a 2005 Yamaha YZ 250. While silencers may differ slightly in size and materials , the concept remains the same. They are a perforated metal tube wrapped in fiberglass fitted inside of a larger metal tube ,thats it . Some are bolted together some are rivited together and they are usually designed to come apart at one end only .
The fiberglass I used was the Bike Master Muffler Packing Kit #158010 from FortNine .
The sealant I used was Permatex Ultra Copper High Temp RTV Silicone .