GMC Sierra 2500 HD Performance Exhaust - Single Side Exit - Flowmaster - Flow FX Cat-Back - Black - `11-`19
GMC Sierra 2500 HD Performance Exhaust - Single Side Exit - Flowmaster - Flow FX Cat-Back - Black - `11-`19

Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.

GMC Sierra 2500 HD Performance Exhaust - Single Side Exit - Flowmaster - Flow FX Cat-Back - Black - `11-`19. 409 stainless cat-back with a straight-through Flow FX muffler delivers a deep, moderate tone and improved flow for 6.0L HD trucks.
Built for 2011–2019 GM Silverado/Sierra 2500/3500 HD 6.0L V8 Crew Cab with 6.5 ft bed, it uses 3.5 in. mandrel-bent 409 stainless tubing and exits behind the rear wheel through a 5 in. black ceramic tip. Reuses factory hangers and includes hardware for an at-home install; backed by Flowmaster’s Lifetime Limited Warranty. Dyno testing recorded maximum gains up to +21 hp and +23 lb-ft at the rear wheels.
Features
- 3.5-inch mandrel-bent 409 stainless tubing
- Flow FX straight-through muffler; moderate sound
- Single side exit with 5-inch black ceramic tip
- Factory-style hangers; complete hardware
- Fits 2011–2019 6.0L Crew Cab 6.5' bed; Lifetime Limited Warranty
Questions or planning a custom setup? Call Austin, TX: 512-982-9393; Los Angeles, CA: 562-981-6800. We offer professional installation and customization at both locations.
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov








