The rapid flow exhaust systems for GM Duramax are built with absolute minimal degree angles on bends. This creates a free flowing, low back pressure system that allows the turbo to move air more freely, reducing exhaust temperatures by as much as 200° which results in more horsepower and torque. Dyno results have shown significant gain in horsepower by switching to a Rapid Flow System.
This item is garage sale priced because it has been discontinued from our current product line.
NO WARRANTY, NO RETURNS ON GARAGE SALE ITEMS