

🚙 Elevate your ride, dominate the streets with precision-engineered lift!
The ReadyLift 69-3920 SST Lift Kit is a vehicle-specific suspension upgrade designed exclusively for GM 1500 AT4 and Trail Boss trucks. It provides a 2-inch front lift and 1-inch rear lift using premium cast iron components and precision spacers, ensuring compatibility with factory lifts and maximizing tire fitment. Engineered for durability and ease of installation, this kit enhances both the look and performance of your truck while maintaining OEM suspension integrity.





| ASIN | B07XFBHSN2 |
| Auto Part Position | Rear |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | #759,873 in Automotive ( See Top 100 in Automotive ) #1,606 in Automobile Chassis Body & Suspension Lift Kits |
| Brand | Readylift |
| Customer Reviews | 4.4 4.4 out of 5 stars (177) |
| Date First Available | September 5, 2019 |
| Exterior | Machined |
| Global Trade Identification Number | 00804879610472 |
| Included Components | 2.0'' Front with 1.0'' Rear SST Lift Kit |
| Item Weight | 40 pounds |
| Item model number | 69-3920 |
| Manufacturer | ReadyLift |
| Manufacturer Part Number | 69-3920 |
| Material | Cast Iron |
| Maximum Lifting Height | 2 Inches |
| Model | 69-3920 |
| OEM Part Number | 69-3920 |
| Product Dimensions | 28.75 x 21.25 x 7.75 inches |
| UPC | 804879610472 |
D**T
It’s worth it.
Excellent quality parts. This is an excellent kit for the Trailboss/ AT4. It’s a piece of cake to install. Really not much to it. Do have to disassemble the front struts though. Took me just over three hours including alignment. I am a Dealer tech by trade though. I also installed Vision 388 Shadow in 20x9 and 34” Nitto Grappler G2’s. Truck looks much better now. The lift was only 1.75” in the front though, but whatever....
R**N
Exactly what I wanted
This kit fits and makes the truck look amazing. Had it professionally installed and couldn’t be happier!!!
S**R
Nice kit with upgraded components- except the U bolts
I'm not going to trash the review because of the U bolts. The ones in my kit did not accept the bolts cleanly, chipping paint and heating up during tightening. I had new thicker,stronger bolts fabricated. The kit overall is nice and adds a good lift. I had an 1.5" leveling kit removed and this installed with new shocks all around. An alignment followed and the ride is firmer and more stable feeling than stock. The RL site had "test" truck measurements for tire fitment. Adding 1.5" spacers with this worked just fine. 2019 Chevy Trail Boss Custom on 35x12.5x20
A**S
Perfect
Easy install if you are mechanically inclined. Have a couple thousands miles on the kit and still loving it
J**D
Ride quality
The kit fit perfect. There were no issues with the rude quality of the tru k after installation. Looks awesome!
K**S
Big Improvement!
Worked perfectly on my 2024 Silverado Trail Boss. Decided to let professional shop install due to recent surgery.
J**K
Best on the market
Just what I was looking for, Perfect stance and easy to install
M**N
Not Much of a Difference
I wish I would have gone with a higher lift on my 2021 Sierra 1500 AT4. This lift fit on nicely, but it did not raise the truck noticeably.
J**A
Ride is better than stock. Looks way better than stock. Running 275/65r20 for now until I get my 35x12.50x20. Also getting some 2" spacers. Absolutely love it. First pic and last pic are with the sst. The pic without the side steps has the 35x12.50.
B**N
Easy to install and fit excellent. You will need a spring compressor for the front. And I also watched a video on you tube with someone installing this exact kit. Made it much easier. Certainly recommend.
J**R
Just the way i wanted my truck to look!