GMC Sierra 1500 Performance Exhaust - Flowmaster - Signature Series Cat-Back - `19-`26
GMC Sierra 1500 Performance Exhaust - Flowmaster - Signature Series Cat-Back - `19-`26

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Flowmaster Signature Series Cat-Back for 2019-2026 GMC Sierra 1500 (5.3L, factory dual) delivers a deep, moderately aggressive tone and true bolt-on fit. Built from brushed 304 stainless for lasting performance.
A 3.00-inch inlet feeds a single-in/dual-out straight-through muffler for better flow and dyno-proven gains up to 21 hp/26 lb-ft at the wheels. Dual 2.50-inch mandrel-bent tails clear the spare and hitch and exit the factory bumper bezels for the OE dual look. TIG-welded, uses factory hangers, and includes hardware/instructions for an easy home install. Fits 2WD/4WD Crew Cab and Double Cab.
Features
- Brushed 304 stainless; TIG welded
- 3.00 in inlet; straight-through Signature muffler
- Dual 2.50 in mandrel-bent tails; clears spare/hitch
- Uses OEM hangers; hardware included; dyno gains up to 21 hp/26 lb-ft
Have questions or planning a build? Call our team — Austin, TX 512-982-9393 or Los Angeles, CA area 562-981-6800. Installation and customization available at both locations.
Buying multiple items? Contact us for shipping discounts. We install on premises at our Austin and Los Angeles facilities.
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