aFe aFe Large Bore-HD 5in 409SS DPF-Back Exhaust System w/Pol Tip 24-25 GM Diesel Trucks V8-6.6L(td) L5P

Fits 2024-2025 6.6L Duramax V8 (L5P, updated)

aFe

Cat-Back

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gain

no published figure

price

$535

at Shop Jimmy O

install

2/5 difficulty · ~1-2 hrs, bolt-on

Buy at Shop Jimmy O Add to build

A cat-back exhaust replaces the pipes and muffler from the catalytic converter to the tip. It changes how the truck sounds and drops a little weight. This one is the aFe aFe Large Bore-HD 5in 409SS DPF-Back Exhaust System w/Pol Tip 24-25 GM Diesel Trucks V8-6.6L(td) L5P, listed to fit the 2024-2025 Chevrolet Silverado 2500HD/3500HD with the 6.6L Duramax V8 (L5P, updated).

why this one — Cat-backs are a sound and looks upgrade first. Treat any power claim as unproven unless the maker publishes a dyno sheet. Shop Jimmy O lists it at $535.00, and the fitment above is what the listing itself states, not a guess.

Questions about this category

F-150: does anyone publish a horsepower number for a cat-back exhaust?F-150: what does a cat-back exhaust cost?F-150: how hard is it to install a cat-back exhaust, and how long does it take?

pairs well with

aFe Power Momentum HD Cold Air Intake System w/ Pro 10R Filter Banks Power Derringer Tuner (66652)

No published gain figure for this part, and nothing here is a guarantee. Price is a list price and can lag the retailer; confirm at checkout. See how we check a price and our affiliate disclosure.