
Original: $882.00
-65%$882.00
$308.70The Story
Description
Fits
| Year | Make | Model | Engine |
| 2001-2007 |
GM | Extended Cab - Cab & Chassis - Short Box - Long Box | LBZ, LLY & LB7 w/ 6.6L Duramax |
Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 431102 is a 4" Downpipe Back Dual Exhaust for the 2001-2007 Duramax Trucks. It replaces your OE components with a 4" high-flow twin pipe system with a muffler for street applications. Just like all of Flo-Pro Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you sail through the installation process. It not only sounds amazing but improves your fuel mileage, torque, and throttle response!
Part Number: 431102
Features
- 4" Downpipe Back Single Exhaust system.
- Includes Muffler
- Aluminized Steel
- Dual Exhaust System
- Easy Install - Mounts to OE Hangers
Notes
- Dual Pipes may require slight modifications or have fitment issues on trucks with Air Bags or Suspension Lifts

Details & Craftsmanship
Every detail has been carefully considered to bring you the perfect product.
Description
Description
Fits
| Year | Make | Model | Engine |
| 2001-2007 |
GM | Extended Cab - Cab & Chassis - Short Box - Long Box | LBZ, LLY & LB7 w/ 6.6L Duramax |
Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.
The 431102 is a 4" Downpipe Back Dual Exhaust for the 2001-2007 Duramax Trucks. It replaces your OE components with a 4" high-flow twin pipe system with a muffler for street applications. Just like all of Flo-Pro Manufacturings Exhaust kits, it will come with all the required clamps, pre-weld contour bent hangers, and stronger flanges to help you sail through the installation process. It not only sounds amazing but improves your fuel mileage, torque, and throttle response!
Part Number: 431102
Features
- 4" Downpipe Back Single Exhaust system.
- Includes Muffler
- Aluminized Steel
- Dual Exhaust System
- Easy Install - Mounts to OE Hangers
Notes
- Dual Pipes may require slight modifications or have fitment issues on trucks with Air Bags or Suspension Lifts















