2025 GM 1500 4.0" SST Lift Kit (69-35400)

Fits 

Give your 2025 Silverado or Sierra 1500 the aggressive, levelled stance it deserves without sacrificing that smooth factory ride. This heavy-duty SST kit is engineered to clear larger rubber and increase ground clearance while keeping your Duramax's suspension geometry and driveline angles perfectly in check. It’s the ultimate no-cut solution for owners who want a bold look and reliable performance for daily driving or light-duty hauling. 

TIRE/WHEEL SIZING GUIDE

Before ordering a ReadyLIFT GM1500 Lift Kit, please check the rear leaf spring for kit compatibility.

IMPORTANT: PLEASE READ ADDITIONAL FITMENT INFORMATION

Part Number: 69-35400 

• 4" front/3" rear lift
• No-cut, bolt-on installation
• Heavy-duty DOM control arms
• Maintenance-free TCT pivot bushings
• Corrected CV & strut angles
• Billet Aluminum pre-load spacers
• Retains factory ride quality

• 2 x UCA with maintenance-free, TCT pivot bushings, heavy-duty ball joints, and with ARC adaptor
• 2 x Fab steel heavy-duty strut extensions
• 2 x CNC-machined billet aluminum spring pre-load spacers
• 4 x Laser Cut Washers
• 1 x 3" Cast Block w/ U-Bolts
• 1 x ARC Relocation Bracket 

• Vehicles with Mono-leaf rear springs require (67-39530UB)
• The mono-leaf is easily identifiable the U-bolt is round/circular around the top of the leaf spring
• Max tire size - 20x9 0 offset 295/55-R20 
• Use of the Auto 4 Hi feature is not recommended
• Not compatible with 2019 Limited OLD Body Style
• NOT intended for off-road use or abuse
• Not compatible Trail Boss, ZR2, and AT4 / AT4X, and 2019 classic body LD or Limited
• Not compatible with Super Cruise.  Single Cab configuration has not been validated for fitment & drivability by ReadyLIFT
• ReadyLIFT wheel and tire fitment recommendations are typically based on Wheel Pros wheels and Nitto tires. Due to product differences among tire manufacturers, tire specifications and dimensions including, but limited to, overall diameter, rolling diameter, tread width, aspect ratio, lug pattern, sidewall construction and inflation pressure, will vary meaningfully by tire and wheel manufacturer. Every tire and wheel combination should be test fit prior to installation. Consult your local installer to learn more about the right tire fitment for your application.
• When lifting a vehicle and installing aftermarket wheels and tires, a tire manufacturer's construction and material quality can alter vehicle ride quality. When increasing a vehicle wheel and tire size, most larger aftermarket truck and SUV tires are 10-ply (or more) E tires compared to typical OEM 6-ply C tires. This more rigid sidewall construction increases the perception of suspension stiffness often described as ride harshness. The ride, handling, traction, noise, fuel economy, and wear differences between All-Season, All-Terrain, Mud-Terrain, or Trail-Terrain type tires can be significant. Please take into account tire and wheel choice will generally have a meaningful impact on the ride & handling experience.

Click Here For Instructions

• ReadyLIFT Suspension Inc. and/or Dirty Diesel Customs are NOT responsible for any damage or failure resulting from improper installation.