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Ships within 48 hours · Estimated delivery Aug 19 - Aug 24
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Description
2025 GM 1500 Trail Boss AT4 6" Big Lift Kit (44-35625)The ReadyLIFT 6 inch Big Lift Kit for the 2025 Chevy Silverado Trail Boss and GMC Sierra AT4 is a comprehensive solution for owners seeking maximum height and off road presence. It features heavy duty boxed steel crossmembers and a full width 3 16 inch plate steel skid plate for ultimate underbody protection. By utilizing a proprietary lower strut clamshell design and top mount extensions, this kit maintains factory suspension geometry and ensures
The ReadyLIFT 6-inch Big Lift Kit for the 2025 Chevy Silverado Trail Boss and GMC Sierra AT4 is a comprehensive solution for owners seeking maximum height and off-road presence. It features heavy-duty boxed steel crossmembers and a full-width 3/16-inch plate steel skid plate for ultimate underbody protection. By utilizing a proprietary lower strut clamshell design and top-mount extensions, this kit maintains factory suspension geometry and ensures your high-performance factory shocks perform at their best even at an 8-inch total lift height.
Features
- Provides a total of 8 inches of lift (ReadyLIFT 6-inch + Factory 2-inch lift).
- Angled and offset top-mount strut extensions minimize wear and optimize shock performance.
- Proprietary lower strut clamshell design maintains factory geometry for a smooth ride.
- Includes heavy-duty tubular upper control arms (UCAs) with maintenance-free pivot bushings.
- Boxed steel front and rear crossmembers provide superior structural rigidity.
- 1/4-inch boxed plate steel differential drop brackets with double gussets prevent torsional twisting.
- Fabricated 5-inch tall tapered rear lift blocks with integrated bump stop landings maintain proper rake.
- Comes with a full-width 3/16-inch plate steel front skid plate for essential protection.
Notes
- The "Auto 4 Hi" feature is not recommended for use after installation.
- Vehicle alignment, headlamp aim, and Advanced Driver Assistance Systems (ADAS) should be recalibrated after installation.
- Trimming of the front valance and inner fender liners is required for recommended tire/wheel combinations.
- Installation time is estimated at 10 hours, excluding alignment and tire assembly.
Compatibility Notes
- Exclusively designed for 2025 Chevy Silverado 1500 Trail Boss and GMC Sierra 1500 AT4 4WD models.
- Not compatible with AT4X, ZR2, or models equipped with rear mono-leaf springs.
- Will not fit 2025 models with round U-bolts unless paired with U-bolt kit 67-35150UB.
Tire Fitment
- Recommended (No Trimming): 35x12.50 tires on 20x9 wheels with 0 offset.
- Maximum Fitment (With Trimming): 37x12.50 tires on 20x9 wheels with 0 offset.
- Maximum Wheel Width: 20x10 with -18 offset (requires trimming).
Specs
- Total Lift Height: 8 inches.
- Crossmember/Skid Plate Material: 3/16-inch thick plate steel.
- Differential Drop Material: 1/4-inch boxed plate steel.
- Kit Contents: Ductile iron knuckles, front/rear crossmembers, skid plate, differential drops, strut extensions, tubular UCAs, rear blocks, and hardware.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy