Description
Overview
The Flowmaster Flow FX cat-back exhaust system is engineered to unlock better breathing and a bolder tone for the 2015-2020 Chevrolet Tahoe and GMC Yukon equipped with the 5.3-liter engine. Built as a complete catback exhaust kit, it swaps out the restrictive factory plumbing for a purpose-built performance exhaust that improves flow while delivering a moderate, refined sound level that won’t drone on the highway. If you’ve been searching for a proven upgrade to your car exhaust, this Flow FX exhaust system pairs measurable performance with real-world drivability.
Every component is manufactured from durable 409 stainless steel throughout, so the pipes and muffler are built to resist corrosion and hold up to the elements. The exhaust pipe design steps from 3.00-inch down to dual 2.50-inch mandrel-bent tubing, keeping the internal diameter smooth through every bend for improved exhaust gas flow. Flowmaster backs the 24.00-inch Flow FX muffler with center inlet and dual outlet routing to feed the dual tailpipe configuration, giving you the aggressive stance and sound that make this a standout among performance exhaust upgrades.
Key Benefits
On the dyno, this system produced max gains of 7 horsepower and 7 lb-ft of torque over stock at the rear wheels — power you can feel when you get into the throttle. The side-exit routing terminates in dual 3.50-inch black stainless steel tips with an embossed logo for a custom, finished look. Because the kit uses all the existing factory hanger locations, installation is straightforward and can be handled at home with the included hardware and instructions.
- Durable 409 stainless steel construction throughout for long-term corrosion resistance
- 3.00-inch to dual 2.50-inch mandrel-bent pipes for improved exhaust gas flow
- Flow FX muffler included, 24.00-inch length with center inlet and dual outlet
- Dual 3.50-inch black stainless steel tips with embossed logo and side-exit styling
- Max dyno gains of 7 hp and 7 lb-ft of torque over stock at the rear wheels
- Moderate sound level tuned for aggressive tone without excessive drone
Fitment & Installation
This kit is designed specifically for the 2015-2020 Chevrolet Tahoe and GMC Yukon with the 5.3-liter engine. It mounts using the factory hangers, includes all necessary installation hardware, and comes with instructions for a bolt-on, do-it-at-home fit. The system is CARB (California) compliant, so it’s a smart choice whether you shop for exhaust upgrades in emissions-tested regions or simply want a legal, tested setup. Please note the California Proposition 65 warning applies.
Backed by Flowmaster’s Lifetime Limited Warranty, this Flow FX catback delivers the flow, tone, and craftsmanship enthusiasts expect. Whether you’re comparing a Borla exhaust, Corsa exhaust, MagnaFlow exhaust, or Walker exhaust, this Flowmaster exhaust system stands on its own for the 5.3L Tahoe and Yukon.
