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SS20151NM Flo-Pro 5" Down Pipe Back Exhaust - Stainless Steel GMC/Chevy 6.6L Duramax 2020-2022

Mftr. Part#: SS20151NM
Manufacturer: FloPro Exhaust
Flo~Pro Stainless Steel 5" Down Pipe Exhaust kit for your 2020+ GMC/Chevy Duramax 6.6L L5P turbo diesel 2500/3500HD pickup. This pipe kit will only fit models equipped with the OEM style 4-bolt flange off of the turbo direct pipe. Does not come with muffler. Race tuning required.

PRODUCT DETAILS (click to expand)

Mftr. Part#SS20151NM
Weight (lbs.):79.00 lbs.
Dimensions:18.50" x 57.50" x 12.00"

PRODUCT SPECS (click to expand)

Attribute nameAttribute value
Offroad Use OnlyYes
Race Tuning RequiredYes
Exhaust TypeDown Pipe Back
Stainless/AluminizedStainless Steel (409)
Includes Muffler(s)No
Includes Tip(s)No



To purchase this product, you must accept the terms of the OFFROAD RACE-ONLY DISCLAIMER. Click HERE to view.



Stainless 5" Downpipe Back race kit that replaces your stock exhaust with FloPro's aluminized exhaust. Their contour 5" mandrel bent exhaust system comes with all required clamps, pre weld contour bent hangers, and stronger flanges all to help you ease through the install process. This kit will help improve torque, milage, throttle response and make your truck sound great!


  • 5" Downpipe Back Exhaust System
  • Stainless steel
  • Mounts to OEM hangers
  • Easy install
  • No muffler