Pacific Performance Engineering (PPE) PPE 117010350 Stainless Steel Cat-Back Performance Exhaust System Polished Tip | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax
Fits 2007-2019 6.6L Duramax V8 (LBZ) · 6.6L Duramax V8 (LMM) · 6.6L Duramax V8 (LML) · 6.6L Duramax V8 (L5P)
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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 PPE 117010350 Stainless Steel Cat-Back Performance Exhaust System Polished Tip | 2007.5-2019 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax, listed to fit the 2007-2019 GMC Sierra 2500HD/3500HD. The listing describes it as stainless steel.
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. Alligator Performance lists it at $539.99, and the fitment above is what the listing itself states, not a guess.
No horsepower or torque figure published by PPE for this part on the Alligator Performance listing, read 2026-09-04. Not estimated.
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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.