While relatively respectable at idle, the Mountain Series Exhaust is loud when you're on the throttle and is best suited for use in unpopulated areas. Its straight through design and small physical size sheds huge weight and is designed to run with sleds stock fuel and clutch setting. If you're looking for the lightest, most aggressive can on the snow, this one's for you.
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GGB Mountain mufflers are designed to be used in areas where increased sound levels are not an issue. These cans are loud when you open the throttle. Please use accordingly. Sound level increase over stock (dbA) Idle + 4-6 / Under load + 10-18.
Fuel and clutching mods are not necessary prior to installation. GGB two stroke mufflers are flow benched developed for back pressure against the stock muffler and will perform efficiently in any application where the stock muffler would be used. Both Mountain and Trail models are guaranteed to provide performance levels as good as or better than stock.