1994-2000 GM 6.5L 4" Turbo Back Exhaust w/ Muffler (431109 / 432120)

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

The 431109 / 432120 is a 4" Turbo-Back Exhaust System by Flo-Pro for the 1994-2002 6.5L GM Diesel. It's the perfect kit if you're looking to remove your stock components and replace it with high-performance and high-flow 4" piping from the turbo-back. You'll notice an improvement in fuel mileage, torque, and throttle response in your 6.5L!

Part Number: 431109 / 432120

• 4" Turbo Back Exhaust
• Includes High Flow Muffler
• Increased Torque & Fuel Mileage
• Aluminized Steel & Stainless Steel Options
• Single Rear Exit

Aluminized steel is the budget-friendly choice. It has a protective coating that holds up well, but once that coating wears it will eventually rust through, especially in salted winter climates. The stainless option is T409 stainless, an automotive-grade steel built to resist rot, and it will typically outlast the truck. T409 is not polished show-grade stainless, so light surface rust or discoloration can still show up over time. That is cosmetic only and won't affect performance or service life.

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  Does this kit include the downpipe? If so what size is it?

  4" from the turbo back.