Wake up the sound and performance of your 2019–2026 Chevrolet Silverado 1500 or GMC Sierra 1500 equipped with the 5.3L engine using the Flowmaster® Flow FX® Cat-Back Exhaust System. Built from durable 409 stainless steel, this system features a 3.00-inch inlet leading into a Flow FX straight-through muffler for a deep, powerful tone with improved exhaust flow.

The dual 2.50-inch mandrel-bent tailpipes exit at an angle behind the rear wheels—ideal for towing as they direct exhaust away from trailers, boats, and cargo. Dyno testing shows gains of up to 18 horsepower and 21 lb-ft of torque at the rear wheels.

This system includes a pair of large 4.50-inch black ceramic coated 304 stainless steel tips, providing a bold custom look to complement the aggressive exhaust sound. It mounts using factory hanger locations and includes all necessary hardware plus an extra hanger for the left tailpipe, making installation simple for any DIY enthusiast. Backed by Flowmaster’s lifetime limited warranty.

Fitment 

Fits the following vehicles:
• 2019–2026 Chevrolet Silverado 1500
• 2019–2026 GMC Sierra 1500
• Fits Crew Cab and Double Cab models
• Fits trucks equipped with the 5.3L engine
• Fits both 2WD and 4WD models

Features

• Large 4.50-inch black ceramic coated stainless steel tips
• Deep, powerful exhaust note inside and outside the vehicle
• Maximum dyno gains: +18 hp / +21 lb-ft
• Flow FX straight-through performance muffler
• Full stainless steel mandrel-bent construction
• Uses factory hanger locations
• Includes all required hardware
• Lifetime limited warranty
• Easy at-home installation