GMC Sierra 1500 Performance Exhaust - Flowmaster - Force II Cat-Back - `11-`18
GMC Sierra 1500 Performance Exhaust - Flowmaster - Force II Cat-Back - `11-`18

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GMC Sierra 1500 Performance Exhaust – Flowmaster Force II Cat-Back (2011–2018). For 6.2L, 143-inch WB crew cab/short bed or extra cab/standard bed, it delivers a refined tone and true bolt-on fit.
Built with 3.50-inch mandrel-bent stainless tubing feeding a Flowmaster 50 Series Big Block muffler, the system produces a muscular exterior note while an integrated Helmholtz chamber helps keep cabin resonance in check. A polished 4.00-inch 304 stainless tip embossed with the Flowmaster logo completes the package. It uses factory hanger locations and is dyno tuned for noticeable gains with moderate sound levels.
Features
- 2011–2018 GMC Sierra 1500, 6.2L, 143-inch WB
- 3.50-inch mandrel-bent stainless tubing
- 50 Series Big Block muffler; Delta Flow technology
- Helmholtz chamber for reduced interior drone
- Polished 4.00-inch 304 SS tip; bolt-on install; Lifetime Limited Warranty
Questions? Call Austin 512-982-9393 or Los Angeles area 562-981-6800. We offer installation and customization at both shops.
Buying multiple items? Contact us for shipping discounts. We install on premises at both locations.
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