Description
Overview
The Flowmaster Outlaw Extreme Cat-Back Exhaust System is engineered to unleash a deeper, more aggressive exhaust note from your 2019*-2026 (*2019 New Body Only) Chevrolet Silverado 1500 or GMC Sierra 1500 equipped with the 5.3L engine. Built around the proven Outlaw series muffler, this stainless steel cat-back setup delivers a powerful, commanding sound while adding real performance where you can feel it — at the rear wheels.
Flowmaster constructs this system from 3.0-inch mandrel-bent 409 stainless steel tubing, maximizing exhaust flow for improved throughput and long-term durability. On the dyno, the Outlaw Extreme produced max gains of 15 horsepower and 20 lb-ft of torque at the rear wheels, giving your truck a more responsive, harder-hitting attitude.
Built for Extreme Off-Road Use
What sets the Outlaw Extreme apart is its turndown-style dump exit positioned right after the muffler, eliminating the traditional over-axle tailpipe. Removing that tailpipe improves ground clearance and departure angle — a meaningful advantage when you’re pushing through more extreme off-road terrain. It’s a purpose-built layout for truck owners who want aggressive sound and a cleaner underbody for the trail.
Key Benefits
- Deep, powerful, and aggressive exhaust tone from the Outlaw series muffler
- Max dyno gains of 15 hp and 20 lb-ft at the rear wheels
- 3.0-inch mandrel-bent 409 stainless steel tubing for maximum flow and durability
- Turndown dump exit improves ground clearance and departure angle
- Uses factory hangers and mounting locations for a straightforward install
- CARB (California) compliant — Emission Code 5
What’s Included
This is a complete cat-back kit featuring a single tail pipe configuration and the Outlaw muffler (40.00-inch overall length, 3.00-inch center inlet, 3.00-inch outlet, finished in black). The silver pipe finish is paired with the black muffler for a clean, functional look under the truck. All necessary hardware is included, and because the system uses factory-mounting locations, installation is designed to be easy and hassle-free. Note that exhaust tips are sold separately, letting you finish the system to match your personal style.
Fitment
Designed specifically for the 2019*-2026 (*2019 New Body Only) Chevrolet/GMC Silverado/Sierra 1500 with the 5.3L engine. Always confirm your truck’s year, body style, and engine before ordering to ensure correct fitment.
Backed by Flowmaster’s Lifetime Limited Warranty, the Outlaw Extreme Cat-Back Exhaust System is a durable, performance-focused upgrade for owners who demand both sound and capability. Warning: This product is subject to California Proposition 65.
