GMC Sierra 1500 Performance Exhaust - Flowmaster - American Thunder Cat-Back - `11-`18
GMC Sierra 1500 Performance Exhaust - Flowmaster - American Thunder Cat-Back - `11-`18

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GMC Sierra 1500 Performance Exhaust - Flowmaster American Thunder Cat-Back (2011-2018) delivers an assertive exterior note with a controlled cabin tone.
Bolt-on stainless cat-back with a 3.5 in mandrel-bent inlet feeding a 50 Series HD muffler with 4.0 in internals and a tuned chamber to help reduce drone. Dual 2.5 in tailpipes use factory hangers and finish with polished 3.5 in tips. Side-behind-tire or straight-out exits. Fits 2011-2018 GMC Sierra 1500 6.2L, 2/4WD: Crew Cab Short/Standard (143.5/153 in WB) and Double Cab Standard (143.5 in WB). Includes hardware, clears the spare, and carries a Lifetime Limited Warranty.
Features
- Aggressive exterior, moderate interior sound
- 3.5 in inlet; dual 2.5 in tails; polished 3.5 in tips
- 50 Series HD muffler with tuned resonance chamber; bolt-on install
Questions or ready to plan your build? Call 512-982-9393 (TX) or 562-981-6800 (CA). Installation and customization available at our Austin, Texas and Los Angeles, California area locations.
If you’re considering multiple items, contact us for shipping discounts. We install on premises at both locations.
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