Banks Power 2020-2022 Chevy/GMC 3500 6.6L Duramax, L5P, Dual Rear Wheel Only Monster Exhaust System
Fits 2020-2022 6.6L Duramax V8 (L5P)
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Price tracked 5 times since Sep 4, 2026 across the stores we check daily: low $648, high $648, currently $648.
where to buy · 2 retailers tracked
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 Banks Power 2020-2022 Chevy/GMC 3500 6.6L Duramax, L5P, Dual Rear Wheel Only Monster Exhaust System, listed to fit the 2020-2022 Chevrolet Silverado 2500HD/3500HD with the 6.6L Duramax V8 (L5P).
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. SDHQ Offroad lists it at $648.00, and the fitment above is what the listing itself states, not a guess.
No horsepower or torque figure published by Banks Power for this part on the SDHQ Offroad listing, read 2026-09-04. Not estimated.
Questions about this category
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.