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Flo~Pro Stainless 4" Downpipe Back Single Exhaust w/No Muffler | 2017 6.6L GM Silverado HD/Sierra HD L5P Cab & Chassis


Flo~Pro 4" stainless steel downpipe back single exhaust system with no muffler for 2017 Chevy Silverado 3500 & 2017 GMC Sierra 3500 cab&chassis crew cab models only.

  • Only fits models equipped with the OEM style 4-bolt flange off the turbo direct pipe!
  • Fits cab&chassis crew cab models only!!!
  • No Muffler
Not Available
Pricing: $673.65


In 2017, GMC made a production change in the connection between the catalytic converter and the turbo direct pipe on the L5P. Please ensure you have the newest 4-bolt style flange before ordering this kit. If you have a 3-bolt flange please refer to our 15-16 LML exhaust systems.


  • Reduced EGT!!!
  • Increases Horsepower
  • Increases Torque
  • Increases Fuel Efficiency

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
  • 90.0 lbs.
  • Free Shipping!