AT4/Trail Boss Plus 2.0" SST Lift Kit- GM 1500 AT4/Trail Boss 4WD 2019-2023

Last fall we announced our new leveling and SST lift kit offerings for the all-new GM 1500 trucks. We specifically did not include the factory lift kit-equipped GMC  AT4  and Chevy Silverado Trail Boss. The  AT4/Trail Boss are factory equipped with a 2" front lift. This front lift includes a longer front shock/strut assembly. When combining a traditional leveling kit on these factory lifted trucks, several issues present themselves including binding problems with the factory control arm ball joint and contact concerns with the lower strut/CV axle assembly. The 69-3920 SST Lift Kit works with the factory 2" front lift. This kit includes a top mount strut spacer along with a pre-load spacer to limit droop and the same premium grade upper control arms now available in our 66-3921 leveling kit. OE style 3" tall cast iron rear lift blocks and rear bump stop extension cups are also included to create a true  AT4/Trail Boss-specific bolt-on lift kit that provides 2" of front lift and 1" of rear lift. This new lift kit concept is similar to our successful TRD Pro Plus 2 SST Lift Kit which is also engineered specifically to work with that factory OE suspension lift. Your trust in ReadyLIFT to provide high-quality, precision engineered products is extremely important to us. You can be assured that this all-new SST lift kits are the absolutely most reliable and best performing suspension upgrade option for the  AT4/Trail Boss trucks. AT4 - Max tire 305/55-20, 20x9 0 offset wheel Trail Boss - Max tire 295/65-20, 20x9 0 offset wheel NOTE: Use of Auto 4 HI feature not recommended.. NOTE: This GM 1500 kit is NOT COMPATIBLE with vehicles equipped with rear composite mono-leaf springs. The mono-leaf is easily identifiable the U-bolt is round/circular around the top of the leaf spring. This kit only works with vehicle equipped with traditional steel leaf springs identified by square U-bolts. NOTE: Not compatible with Sierra AT4X or Silverado ZR2 Edition.

• 2" SST Lift Kit for 20192023 GM AT4 & Trail Boss models
• Not compatible with Sierra AT4X or Silverado ZR2 Edition
• Front lift combines with factory 2" lift
• CNCmachined billet Aluminum top spacer and preload spacer kit
• Heavyduty control arms with 1ton ball joints
• Maintenancefree pivot bushings
• Includes 3" tall OE style cast iron rear lift blocks
• Comes with new Ubolts
• Max tire size for AT4: 305/5520 on 20x9 0 offset wheel
• Max tire size for Trail Boss: 295/6520 on 20x
• 2"" SST Lift Kit for 2019 2"" SST Lift Kit for 20192023 GM AT4 & Trail Boss models
• CNC CNCmachined billet Aluminum top spacer and preload spacer kit
• Heavy Heavyduty control arms with 1ton ball joints
• Maintenance Maintenancefree pivot bushings
• Comes with new U Comes with new Ubolts
• Max tire size for AT4: 305/55 Max tire size for AT4: 305/5520 on 20x9 0 offset wheel
• Max tire size for Trail Boss: 295/65 Max tire size for Trail Boss: 295/6520 on 20x"

Specifications

• California Proposition 65: WARNING: This product can expose you to chemicals including Di(2-ethylhexyl)phthalate (DEHP), which is known to the State of California to cause cancer, and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov/product.
• Fitment: Direct Fitment
• Front Lift Component: Spacer
• Front Lift Height: 2 Inches
• Front or Rear: Front and Rear
• Install Difficulty: Difficult Requires Professional Installation
• Installation Time: 5+ Hours
• Max Tire Size: 305
• Prop65 Chem1: Di(2-ethylhexyl)phthalate (DEHP)
• Rear Lift Component: Block and U-bolt
• Rear Lift Height: 1 Inch
• Shocks Included: No

Vehicle application overview

Confirm trim, engine, and installation requirements before ordering.

• 2019–2024 Chevrolet Silverado 1500
• 2019–2024 GMC Sierra 1500