The Gibson Dual Split cat-back exhaust for 2007–2012 Chevrolet Avalanche LS (5.3L) is an aluminized dual-exit system that reduces backpressure and delivers an aggressive throaty sound. Dyno-tested gains typically range 15–20 hp while torque improves. Polished stainless slash-cut tips exit straight out the back and the baffled Superflow muffler keeps interior drone minimal. The system installs bolt-on with included hardware and a lifetime limited warranty.
Gibson 07-12 Chevrolet Avalanche LS 5.3L 2.25in Cat-Back Dual Split Exhaust - Aluminized