Have you ever washed your muddy bike, and then started it, to find you shoot water and mud out of your muffler??

Prevent water and mud filling up in your exhaust system when cleaning your bike with a Muffler Bung
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Muffler bungs are a great way of prolonging the life and quality of your bikes exhaust from preventing water/mud ruining your muffler packing, also preventing mud building up and blocking your mufflers internals, not to mension the obvious one, RUST