Flowmaster Super 10 Series Offset/Center Oval Muffler; 2.50-Inch Inlet/2.50-Inch Outlet (Universal; Some Adaptation May Be Required)

Incredible Performance. If you’ve never heard Flowmaster’s Super 10™ Sound Technology, then you don’t know what you are missing. The Flowmaster Super 10 Series Offset/Center Oval Muffler - 2.5 inch is the boss of all exhausts and will give your Sierra the incredible aggressive tone that hails everyone’s attention.

Unmatched Technology. This muffler features the cutting-edge patented Delta Flow Technology that sets Flowmaster’s exhaust systems apart from all others. This amazing technology helps speed up spent gases as they blow through for a more efficient performance.

Well-Designed Quality. Constructed from 16-gauge stainless steel, this muffler has been fully MIG-welded for incredible longevity and durability. Built for off-road or race applications only, this universal exhaust may require some adaptation.

Modifications Required. This Muffler was designed to be used on mutliple applications, as it is not a direct fit replacement part. In order to install this Muffler properly on your vehicle, some modifications to the exhaust system will be required.

Warranty. Flowmaster protects your investment with a limited lifetime warranty that will cover any defect or flaw that might occur in the materials or workmanship.

Application. The Flowmaster Super 10 Series Offset/Center Oval Muffler - 2.5 in. fits all 1999-2026 GMC Sierra 1500 models.

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