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7L Cummins With AS69RC Transmission
Superior horsepower and acceleration gains
Fits Dual and single rear wheel models
A must do upgrade on any 47/48RE build
as they are designed as direct replacements for the stock rocker bridges
Flowmaster American Thunder Cat-Back Exhaust For 2007-2008 Tahoe/Yukon 4.8L/5.3L 2023-2025 GMC Sierra 3500 7L Cummins With AS69RC TransmissionFor the person who is looking for an aluminized steel cat back exhaust system with an aggressive exterior tone and moderate interior tone. The American Thunder system is heavy 16 gauge mandrel bent aluminized steel tubing for durability and maximum performance. Includes a Super 50 Series performance muffler for that perfect blend of a deep aggressive exterior sound, with a moderate interior tone that won't drive you out of the cab when having a
