4 Inch Lift Kit AT4/Trailboss N3 Struts Chevy/GMC Sierra 1500 (19-24)/Silverado 1500 (19-24) Rough Country Air & Fuel - Carburetion & EFI - Fuel Injection Throttle Body Adapter Does work with Holley EFI

Does work with Holley EFI if using the AEM dash display for logic based control

you'll have a smooth

It is strongly recommended that a battery charger be used during the ECM/TCM Unlock to ensure no voltage drop interrupts the process leaving an ECM in-operable

the 180 Awning Rafters also have internal structure enhancement with Overland Vehicle Systems' exclusive cross support technology

no strut disassembly required

4 Inch Lift Kit AT4/Trailboss N3 Struts Chevy/GMC Sierra 1500 (19-24)/Silverado 1500 (19-24) Rough Country Air & Fuel - Carburetion & EFI - Fuel Injection Throttle Body Adapter Does work with Holley EFIGM's 2019 1500 features an impressive all new design that's built from the ground up, with aggressive angles and head turning stylings that fit in beautifully when transformed with Rough Country's 4in Suspension Lift. This kit lifts and levels your vehicle for a commanding stance and enough clearance to run 35x12. 50 tires on 10in wide wheels. Rough Country has engineered this kit to provide optimal suspension geometry while retaining the factory ride