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Gibson's Dual Split cat‑back exhaust for 2021–2022 GMC Yukon XL 1500 and Suburban 1500 5.3L 2/4WD reduces backpressure and is dyno‑tested to show average gains of 15–20 horsepower. The stainless system exits with dual tips, installs as a bolt‑on with no welding required, maintains a mild interior sound and is supported by a lifetime limited warranty.
Gibson 21-22 GMC Yukon XL 1500/ Suburban 1500 5.3L 2/4wd Cat-Back Dual Split Exhaust
