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afe Power Large Bore HD 2-1/2" Stainless Steel Downpipe | 2016-2017 2.8L GM Duramax


Gain up to 19 hp and 27 lbs. x ft. torque and outflows the factory intake by 50%. Want a better deal? Contact us about a performance package today.

Pricing: $669.75

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aFe power's large bore-HD turbo downpipe for the 2016-2017 2.8L GM Duramax Canyon/Colorado turbo diesel engine is engineered to perform in the most extreme environments. This downpipe is constructed out of 2-1/2" mandrel bent stainless steel tubing.

  • Constructed from 2-1/2" mandrel-bent stainless steel tubing
  • Utilizes all factory mounting locations to provide a quick, hassle-free installation
  • 100% hand MIG-Welded by certified craftsmen for race proven strength and durability


Utilizing the factory mounting locations providing stability and a direct fit.

Leak-Free Seal

High quality OE style CNC machined flanges are used for a complete 360 degree sealing surface.

Simple Installation

This system uses factory mounting locations providing stability and hassle-free installation.

Flow and Performance

This down pipe is constructed of 2-1/2" mandrel-bent stainless steel tubing for maximum flow. Smooth transition bends allow for low turbulence, increasing horsepower, torque and lowering EGT’s.


  • Crew Cab/ Short Bed (128.3" Wheelbase)
  • Crew Cab/ Long Bed (140.5" Wheelbase)
  • Extended Cab/ Long Bed (128.3" Wheelbase)

WARNING! These products are capable of disabling emissions equipment. If using DPF/EGR removed tuning, these high performance products are intended SOLELY for offroad use or closed-course racing use.

Shipping Information

  • Item Requires Shipping
  • 18.0 lbs.
  • W8.0000” x H8.0000” x L20.0000”
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