All 60 Series Mufflers feature Delta Flow Technology to increase horsepower and torque in most four and six cylinder vehicles. The 60 Series mufflers have shown significant improvements in mileage, helping to save fuel on many commuter vehicles, the mellow tone making for a pleasant and quiet driving experience. Just by adding a larger diameter tailpipe and Flowmaster stainless tip you can create a deeper tone overall inside and out. Constructed of 16-gauge aluminized steel and fully MIG-welded for maximum durability. 5" Thick x 10" Wide x 13" Long with inlet/outlet sizes of 2" and 2.25". Click on image for sizes and full part number listing.