6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System

6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System

GM Part #84964744

MSRP$2,395.00*

Give your Sierra increased horsepower and a more assertive sound with the GMC Performance 6.

  • Upgrades the look and sound of your vehicle’s exhaust system
  • Helps to reduce restrictions in the exhaust system
  • Allows the engine to breathe better

About this product

Give your Sierra increased horsepower and a more assertive sound with the GMC Performance 6.2L Short Wheelbase Cat-Back Dual Exit Exhaust Upgrade System. This exhaust system offers an increase of up to 13 horsepower and 8 lb.-ft. of torque, while reducing backpressure by 40% at 335-g/s, based on correlated flow testing. Designed and validated by Chevrolet Performance engineers, this 304 Stainless Steel Cat-Back System is tuned to maximize the performance experience while minimizing drone. This Performance Exhaust Upgrade System includes the rear muffler assembly, Y-pipe, exhaust clamps and all necessary mounting hardware. It is 50-state emissions legal and will not void the New Vehicle Limited Warranty.

Warning WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

  • Upgrades the look and sound of your vehicle’s exhaust system
  • Helps to reduce restrictions in the exhaust system
  • Allows the engine to breathe better
  • Includes rear muffler assembly, front resonator assembly, exhaust clamps, polished tip and other mounting hardware
  • Exhaust pipes run through the bumper
  • 40% backpressure reduction at 335-g/s, based on correlated flow testing
  • Helps increase power by up to 13 hp and 8 lb.-ft. of torque
  • 50-state emissions legal and will not void the vehicle warranty when installed by an authorized GM dealership
  • Helps increase power by up to 13 HP and 7 lb-ft of torque
  • 50-state emissions legal and will not void the vehicle warranty when installed by an authorized GM dealership

Overall Length140.14 in / 3559.59 mm
Inlet Outside Diameter3.66 in / 92.96 mm
Body Height7.84 in / 199.06 mm
Width19.12in
Height18.62in
Weight50.26lb
Body Length24 in / 609.6 mm
Inlet TypeSingle
Outlet TypeSingle
Inlet Inside Diameter3.53 in / 89.66 mm
Length58.5in
Hanger TypeRod
Muffler ShapeOval
Heat Shield AttachedNo
Gasket Or Seal IncludedNo
FinishNatural

The greater of either the balance of the vehicle's bumper to bumper warranty or 12 months / 12,000 miles

ModelBody StyleTrimYear(s)
Sierra 1500Crew Cab PickupAT4, Denali, Denali Ultimate, SLT2019, 2020, 2021, 2022, 2023
Sierra 1500Extended Cab PickupAT4, Denali, Denali Ultimate, SLT2019, 2020, 2021, 2022, 2023
Sierra 1500 LimitedCrew Cab PickupAT4, Denali, SLT2022

Frequently Asked Questions

Upgrading your exhaust system will help enhance the sound, performance and style of your vehicle. It can help to reduce restriction in the exhaust system.

Yes, this exhaust system is legal for use in all 50 state.

No, this exhaust will not void the New Vehicle Limited Warranty.