The Gibson Dual Split cat-back exhaust for 1999–2005 Chevrolet Silverado 1500 (4.3L) is an aluminized dual-exit system that replaces the factory rear section to reduce backpressure and deliver an aggressive, throaty tone. Dyno-tested gains typically run 15–20 hp with improved torque. Stainless slash-cut tips exit straight out the back; the baffled Superflow muffler keeps interior drone minimal and installation is bolt-on with a lifetime limited warranty.
Gibson 99-05 Chevrolet Silverado 1500 Base 4.3L 2.5in Cat-Back Dual Split Exhaust - Aluminized