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The aFe Apollo GT Series 4" cat-back exhaust for 2020–2025 GM 2500/3500HD V8 6.6L L8T is a direct-fit system constructed from 409 stainless tubing with a high-flow muffler and a 5" black 409 stainless clamp-on tip. It uses factory-style flanges and hangers for bolt-on installation, includes necessary hardware, and is 100% MIG-welded for strength and durability.
aFe Apollo GT Series 4in 409SS Cat-Back 20-21 GM 2500/3500HD V8-6.6L L8T - Black Tip
