The black elite series product line truly displays gibsons commitment to dominating performance and style. each t-304 stainless tip is offered with a premium black finish applied with gibsons formulated process exclusive only to the black elite series. gibson single side exhaust is perfect for improved acceleration, maximum hill climbing, towing and passing power. this is our best performing exhaust system. exits behind the rear tire. quieter in the cab than any other performance exhaust. with this perfect combination, gibson performance exceeds expectations with the ability to offer quality and style beating their competitors while being. dyno test results show it makes maximum torque and horsepower at low-end. hassle bolt-on installation with professional looking results. the process is similar to the other diverse ranges of exhaust kits to maintain top quality with the added exclusive process to make it elite. Features Quieter, throaty sound and are best for fuel economy improvements, single side exit Roughly 5-8 decibels louder than stock with superior performance gains, dual single side exit Provide minimal backpressure The largest power gains and a loud rumble of around 95 decibels to resemble a nascar race truck...