ReadyLIFT customers have asked for it and we have delivered. 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-Inch 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 SST Lift Kit works with the factory 2-Inch 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 leveling kit.
OE style 3-Inch 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-Inch of front lift and 1-Inch 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.
Features and Benefits:
- Not compatible with Sierra AT4X or Silverado ZR2 Edition.
- 2-Inch front lift combines with factory 2-Inch lift.
- CNC-machined billet aluminum top spacer and pre-load spacer kit with heavy-duty control arms
- 1-ton ball joints and maintenance-free pivot bushings
- Includes 3-Inch tall OE style cast iron rear lift blocks with new U-bolts
- AT4 - Max tire 305/55-20, 20x9 0 offset wheel
- Trail Boss - Max tire 295/65-20, 20x9 0 offset wheel
- Note: Not compatible with rear mono-leaf springs. Click here to learn how to determine if you have rear mono-leaf springs.
- Note: These will not fit late model 2024 or 2025 applications that have round U-bolts. Using U-bolt part number 67-35120UB will allow this kit to fit 2025 applications.
Details:
- Color: Black
- Front Lift Component: Coil Spring Spacer
- Front or Rear: Front and Rear
- Install Difficulty: Intermediate Requires some Automotive knowledge
- Installation Time: 4 Hours
- Lift Height: 1.0 Inch
- Material: Steel
- Max Tire Size: 305
- Rear Lift Component: Block and U-bolt
- Rear Lift Height: 1.0 Inch
- Shocks Included: No
