Banks Power Monster Exhaust System, 5in DPF-Back, SideKick Tip
Fits 2011-2016 6.6L Duramax V8 (LML)
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Price tracked 9 times since Jul 25, 2026: low $599, high $599, currently $599.
Requires: Fits Double Cab Short/Long Bed, Crew Cab Short/Long Bed and Dually DRW. Does NOT fit Single Cab Long Bed. Sierra 3500 HD listed by Banks only through 2015; 2016 3500HD requires additional NOx sensor bung PN 52255, sold separately, professional welding required.
where to buy · 2 retailers tracked
A 5-inch stainless steel DPF-back exhaust with a side-exit SideKick tip for the LML-era Sierra HD, leaving the DPF and DEF/SCR emissions hardware stock.
why this one — One part number covers both the 2011-2014 GMT900 and 2015-2016 K2 Sierra HD bodies, and unlike the newer Banks kits it does fit dually trucks. Honest downsides: it does not fit Single Cab Long Bed at all, Banks lists Sierra 3500 HD coverage only through 2015, and a 2016 Sierra 3500HD needs an extra NOx sensor bung (PN 52255) welded in at your own cost.
Banks publishes no quantified hp/tq figure for this SKU. The value proposition is backpressure and regen-temperature reduction, not horsepower.
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 our affiliate disclosure.