Product Description
Flowmaster Flow FX Cat-Back Exhaust System
for Fits 2020-2025 GM 2500HD 3500HD 6.6L Gas
Cat-Back Dual Side Exit Stainless Steel Exhaust System
Crew Cab with 6.5-foot bed only
Does not fit 5th wheel towing packages
Does not fit ZR2 and AT4X packages.
Part # 718111
for Fits 2020-2025 GM 2500HD 3500HD 6.6L Gas
Cat-Back Dual Side Exit Stainless Steel Exhaust System
Crew Cab with 6.5-foot bed only
Does not fit 5th wheel towing packages
Does not fit ZR2 and AT4X packages.
Part # 718111
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.
Features:
- 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
