Muc-Off Motorcycle Exhaust BungDont let your bottom end get wet with the new Muc Off Exhaust Bung! Product Description Dont let your bottom end get wet with the new Muc Off Exhaust Bung! Made from a two part flexible silicone rubber core and sleeve, it creates an awesome leak proof seal to prevent water or other contaminants from getting into your exhaust pipe whilst youre cleaning or maintaining your machine. Its both 2 and 4 stroke compatible thanks to its removable two part