The 51 series is our largest oval body muffler. Because of its large internal volume, it is a very effective sound absorber and offers an even deeper and more subdued exhaust note than any other straight through muffler we've tested. It's ideally  suited for larger vehicles like pickup trucks and SUV's. It can make huge horsepower vehicle streetable.

Available in the following configurations and sizes:

• Body Length: 10", 14”, 18”, 22".
• Configurations: Center/Center, Offset/Center, Offset/Offset, Dual X Core, Center/Dual, Dual/Dual, and Offset Same Side.
• In/Out and Core Sizes: 2”, 2-1/4”, 2-1/2”, 3", 3-1/2” and 4".