2020-2025 Duramax 4" Downpipe Back Exhaust - No Muffler (431028 / 432028)

Flo-Pro Exhausts are designed to fit all wheelbase & cab configurations unless otherwise specified.

The 431028 / 432028 is a 4" Downpipe Back Exhaust System by Flo-Pro for the 2020-2023 L5P Duramax. It's the perfect kit if you're looking to remove your stock components and replace them with high-performance & high-flow 4" piping from your downpipe back! 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 cruise through the installation process. You'll notice fuel mileage improvement, increased torque, and you'll have a much better sounding 6.6L!

• 4" Downpipe-Back Exhaust System
• OEM Style 4-Bolt Flange
• No Muffler - Straight Pipe
• No Bungs
• Increased Torque & Fuel Mileage
• Aluminized or Stainless Steel
• Easy Installation

• These kits will only fit models equipped with the OEM style 4-bolt flange off the turbo direct pipe!

Don't see your question? Ask us anything about this product.

• ?

  Will this work on 2023

  Yes.