Chevrolet Silverado 2500HD Performance Exhaust - Single Exit - Flowmaster - Flow FX Cat-Back - `20-`26
Chevrolet Silverado 2500HD Performance Exhaust - Single Exit - Flowmaster - Flow FX Cat-Back - `20-`26
Available Options
Drive now, Pay later with Affirm
or with PayPal
Both options will be available upon checkout.
Chevrolet Silverado 2500HD Performance Exhaust - Single Exit - Flowmaster Flow FX Cat-Back (2020-2026). Built for the 6.6L gas Silverado HD, it adds a deeper, refined tone and improved flow in a durable, direct-fit package.
Constructed from 3.5-inch mandrel-bent, 16-gauge 409 stainless steel, the Flow FX cat-back uses a straight-through muffler for strong flow and no interior drone. It fits 2WD and 4WD models and uses factory hanger locations for a straightforward install. Dyno testing shows gains of up to 11 hp and 10 lb-ft at the rear wheels to aid response and towing. Kit includes hardware, instructions, and is backed by Flowmaster’s Lifetime Limited Warranty.
Features
- Single-exit cat-back for 2020-2026 GM 2500HD/3500HD 6.6L gas
- Tuned Flow FX muffler for deep, aggressive-to-moderate tone
- 3.5-inch 409 stainless steel, mandrel-bent tubing
- Straight-through design; no interior drone
- Uses stock hanger locations for easy installation
- Includes hardware and instructions
- Up to 11 hp and 10 lb-ft at the wheels (dyno tested)
- Flowmaster Lifetime Limited Warranty
Have questions about fitment or installation? Call our team—we’re here to help. We offer professional installation and customization at our Austin, Texas and Los Angeles, California area locations. TX: 512-982-9393 (TX), CA: 562-981-6800 (CA).
If you are purchasing multiple items, please contact us for shipping discounts. We install on premises at both locations.
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Need Assistance?
We're here to help!
Call us at 512-982-9393 (Austin, TX) or
562-981-6800 (Signal Hill, CA)
and get assistance from one of our sales team members!
Product ID Number: