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Gibson Black Elite dual extreme cat‑back for 1999–2003 GMC Sierra 1500 SL 5.3L offers aggressive styling and enhanced exhaust tone. The dual bolt‑on system uses a Superflow stainless muffler, mandrel‑bent tubing and black‑finished T‑304 tips, and is tuned for street performance gains while limiting cabin drone. It installs with factory‑style hangers and is backed by a limited lifetime warranty.
Gibson 99-03 GMC Sierra 1500 SL 5.3L 2.5in Cat-Back Dual Extreme Exhaust - Black Elite
