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If the muffler is like other Supertrapp models, taking diffusers out of the end of the exhaust makes it quieter and adding diffusers makes it louder. That is how their Sportbike mufflers work.
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Todd H.
2011 Sportsman 850 XP Touring - XP Deluxe front & rear bumpers, cheap driving lights, Polaris front & rear a arm guards, Viper 3k winch w/rope, XP Touring rear cargo box, Goodyear Rawhide MT/R's.
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