Flowmaster 19-23 GM 1500 6.2L FlowFX SS Cat-Back Exhaust

This Flowmaster® Flow FX® cat-back exhaust system for the 2019-2023 GM Silverado/Sierra 1500 trucks with the 6.2L engine and factory dual exhaust, is manufactured using durable 409 stainless steel throughout and features 3.5-inch to dual 2.50-inch mandrel bent pipes for better exhaust gas flow, and a Flow FX "straight-through" muffler is used for a moderate sound level and maximum performance. Maximum increases on the dyno revealed +26 hp and +39 lb.ft at the rear wheels. This system fits all wheelbases and connects to the factory exhaust tips that exit in the rear bumper for a stealthy look. The system uses all the existing factory hanger locations and includes installation instructions and all necessary hardware for an easy installation that you can do at home. Backed by Flowmaster's Lifetime Limited Warranty. Fits 2019-2023 GM Silverado/Sierra 1500 6.2L V8 Flow FX 3.5" to Dual 2.5" Cat-Back, Dual Rear Exit, Stainless Steel Exhaust System Fits 2/4 wheel drive and all wheelbases. Fits trucks with factory dual exhaust option and bumper cutouts only. Kit does not fit models with the factory active exhaust option.

• Flow FX “straight through” performance muffler delivers a deep, moderate performance tone and improves exhaust flow
• 3.5-inch and 2.5-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
• Includes complete hardware and factory styled hangers in the stock locations for an easy installation
• Max Increases of up to 26 hp and 39 lb.ft. over the stock exhaust at the rear wheels
• Connects to the factory dual exhaust tips for a stealthy look
• Backed by Flowmaster’s Lifetime Limited Warranty

Upgrade your 2019-2023 Chevrolet Silverado 1500 or GMC Sierra 1500 with the Flowmaster Flow FX cat-back exhaust system, part number 717890. Designed for trucks equipped with the 6.2L V8, factory dual exhaust, and bumper cutouts, this system delivers improved exhaust flow, a deep moderate performance tone, and a stealthy appearance by connecting to the original rear exhaust tips. It fits both two-wheel-drive and four-wheel-drive models, all wheelbases, and uses the factory hanger locations for a straightforward installation.
Constructed from durable 16-gauge 409 stainless steel, the Flowmaster system features mandrel-bent tubing that transitions from a 3.5-inch inlet to dual 2.5-inch outlets. The smooth bends help maximize exhaust gas flow while supporting long-term durability in demanding truck applications. Its Flow FX straight-through muffler is engineered to provide a moderate sound level without sacrificing performance, making it well suited for daily driving, towing, and performance-focused builds. Dyno testing showed gains of up to 26 horsepower and 39 lb.-ft. of torque at the rear wheels compared with the stock exhaust.
The kit includes the necessary installation hardware, factory-style hangers, and installation instructions, allowing installation at home with standard mechanical tools. This Flowmaster exhaust system is compatible with trucks using the factory dual-exhaust configuration and bumper cutouts only. It does not fit models equipped with the factory active exhaust option. Backed by Flowmaster's Lifetime Limited Warranty, the Flow FX system provides a durable and performance-oriented replacement for the original cat-back exhaust.

Features:

• Flow FX straight-through muffler produces a deep, moderate performance tone while improving exhaust flow

• Mandrel-bent 16-gauge 409 stainless steel tubing enhances flow and durability

• 3.5-inch inlet transitions to dual 2.5-inch tubing for efficient exhaust routing

• Dyno-tested gains of up to 26 horsepower and 39 lb.-ft. of torque at the rear wheels

• Connects to the factory dual exhaust tips for a clean, stealthy appearance

• Uses factory hanger locations and includes installation hardware and instructions

• Fits two-wheel-drive and four-wheel-drive trucks with all wheelbases

• Compatible with factory dual exhaust and bumper cutouts only

• Not compatible with models equipped with factory active exhaust

• Covered by Flowmaster's Lifetime Limited Warranty

Fitment:
Chevrolet Silverado 1500 Custom Trail Boss 2020
Chevrolet Silverado 1500 Custom Trail Boss 2021
Chevrolet Silverado 1500 High Country 2019
Chevrolet Silverado 1500 High Country 2020
Chevrolet Silverado 1500 High Country 2021
Chevrolet Silverado 1500 High Country 2022
Chevrolet Silverado 1500 High Country 2023
Chevrolet Silverado 1500 LT Trail Boss 2020
Chevrolet Silverado 1500 LT Trail Boss 2022
Chevrolet Silverado 1500 LT Trail Boss 2023
Chevrolet Silverado 1500 LTZ 2019
Chevrolet Silverado 1500 LTZ 2020
Chevrolet Silverado 1500 LTZ 2021
Chevrolet Silverado 1500 LTZ 2022
Chevrolet Silverado 1500 LTZ 2023
Chevrolet Silverado 1500 RST 2020
Chevrolet Silverado 1500 RST 2021
Chevrolet Silverado 1500 RST 2022
Chevrolet Silverado 1500 RST 2023
Chevrolet Silverado 1500 LTD Custom Trail Boss 2022
Chevrolet Silverado 1500 LTD High Country 2022
Chevrolet Silverado 1500 LTD LT Trail Boss 2022
Chevrolet Silverado 1500 LTD LTZ 2022
Chevrolet Silverado 1500 LTD RST 2022
GMC Sierra 1500 AT4 2019
GMC Sierra 1500 AT4 2020
GMC Sierra 1500 AT4 2021
GMC Sierra 1500 AT4 2022
GMC Sierra 1500 AT4 2023
GMC Sierra 1500 Denali 2019
GMC Sierra 1500 Denali 2020
GMC Sierra 1500 Denali 2021
GMC Sierra 1500 Denali 2022
GMC Sierra 1500 Denali 2023
GMC Sierra 1500 Denali Ultimate 2022
GMC Sierra 1500 Denali Ultimate 2023
GMC Sierra 1500 SLT 2019
GMC Sierra 1500 SLT 2020
GMC Sierra 1500 SLT 2021
GMC Sierra 1500 SLT 2022
GMC Sierra 1500 SLT 2023
GMC Sierra 1500 Limited AT4 2022
GMC Sierra 1500 Limited Denali 2022
GMC Sierra 1500 Limited SLT 2022