FLOWMASTER
Flowmaster 718111 2020 GM 2500HD 6.6L CC/SB FFX DOS
Flowmaster 718111 2020 GM 2500HD 6.6L CC/SB FFX DOS
SKU:F13718111
Low stock
Couldn't load pickup availability
- Genuine brand-name parts
- Ships from US warehouse
- 30-day returns
- Max increases of up to 9 hp and 10 lb-ft over the stock exhaust at the rear wheels
- 3.50 to dual 3.00-inch mandrel bent 16-gauge 409 stainless steel tubing maximizes exhaust flow and improves durability
- 4.50-Inch black ceramic coated tips add a custom look to the truck
- Includes complete hardware and factory styled hangers in the stock locations for an easy installation
- Flow FX “straight through” performance muffler delivers a deep, aggressive to moderate performance tone and improves exhaust flow
Fits 2020-2025 GM 2500HD/3500HD 6.6-Liter Gas, Cat-Back, Dual Side Exit, Stainless Steel Exhaust System. This Flowmaster Flow FX cat-back exhaust system for the 2020-2025 GM 2500HD/3500HD trucks with the 6.6-liter gas engine is manufactured using durable 409 stainless steel throughout and features 3.50 to dual 3.00-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 +9 hp and +10 lb-ft at the rear wheels. This system exits out both sides, behind the rear wheels with 4.50-inch black ceramic tips for added style and a custom 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.. 2020-2025 GM 2500HD/3500HD Trucks with 6.6-liter gas engines. Fits 2 & 4-wheel drive, Crew Cab with 6.5-foot bed only. Does not fit 5th wheel towing packages. Does not fit ZR2 and AT4X packages.
| Brand | FLOWMASTER |
|---|---|
| Manufacturer part number | 718111 |
| UPC / GTIN | 90127130155 |
| Weight | 57.75 lb |
| Dimensions (L × W × H) | 58.5 × 16.2 × 11.2 in |
| Category | Engine & Drivetrain |
| Condition | New — genuine brand-name part |
Shipping & delivery
Shipping & delivery
Orders ship from the distributor warehouse closest to you, normally within 1–3 business days of purchase. Standard ground delivery takes 3–7 business days in the continental US; expedited options are shown at checkout. Oversized items (bumpers, running boards, large tonneau covers, some marine equipment) ship LTL freight — we contact you to schedule delivery and a signature is required.
Returns & warranty
Returns & warranty
Unused, uninstalled parts in original packaging can be returned within 30 days of delivery. A restocking fee of up to 20% may apply depending on the product and supplier, and return shipping is the buyer’s responsibility unless the item arrived defective, damaged or incorrect. Every product carries the full manufacturer warranty. Contact us with your order number to start a return.
Fitment & part numbers
Fitment & part numbers
Verify fitment with the manufacturer part number shown above and your vehicle’s year, make, model and trim. If the listing says “Fits select…”, confirm your exact application before ordering. Not sure? Send us your VIN and the part number and we’ll check it for you.
