GMC Sierra 1500 Performance Exhaust - Flowmaster - FlowFX with W.A.V.E. Technology - 19-26. This direct-fit, dual-mode muffler lets you switch from a clean performance tone to a deep, open exhaust note with a wireless button.

Built around the straight-through Flow FX muffler, the system uses mandrel-bent stainless tubing feeding a Power Chamber with a wireless-controlled actuator valve and 3.00-inch turndown dump. It connects to the factory tailpipe and includes the actuator, control unit, two key fobs, wiring, hardware, and detailed instructions. Fits 2019-2026 GMC Sierra 1500 5.3L (new body style), 2WD/4WD, all wheelbases; does not fit 2019 Classic. Expect an aggressive-to-moderate tone closed, and a very aggressive bypass sound open, with documented dyno gains up to 9 hp and 11 lb-ft at the rear wheels.

Features

• W.A.V.E. wireless active valve with two key fobs
• Direct-fit replacement; connects to factory tailpipe
• Mandrel-bent stainless steel construction
• Power Chamber with 3.00-inch turndown dump
• Deep performance tone from Flow FX design
• Includes control unit, wiring, hardware, instructions

Have questions or planning a build? Call us at 512-982-9393 (TX) or 562-981-6800 (CA). We serve the Austin, Texas and Los Angeles, California area with on-site installation and customization. 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