These patented BBK Performance Varitune mufflers are the first of their kind in the aftermarket fully adjustable performance Mufflers that can be adjusted for a louder or quieter sound and horsepower by simply moving the adjustment screw in or out from underneath the car with a wrench!
These mufflers are available in 439 stainless steel in 2.5" 2.75" and 3.0" and with various offsets to fit most aftermarket and OEM applications.
These are offset/offset Mufflers that are designed to fit many car and truck applications including most Ford Mustang applications.