BDS Suspension 2019 to 2020 Silverado Trailboss / Sierra AT4 4 inch lift kit

BDS Suspension
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Brand New Release

Important Kit Notes
1. Requires frame bracket modification
2. Will not fit Adaptive Ride Control (ARC) equipped models
3. Factory 17" and 18" wheels cannot be reinstalled due to tie rod end interference, stock 20" wheels can be reinstalled.
4. 17" wheels with 4.5" backspacing should be test fit prior to mounting the tire to ensure proper clearance to the steering knuckle / tie rod.
5. All aftermarket wheels should be test fit prior to mounting the tire to ensure proper clearance to the brake caliper. Some wheel profiles will not clear the brake caliper. These can be test fitted before the vehicle is lifted in a stock condition.

The latest addition from BDS Suspension are new 4" IFS Systems specially designed for the 2019 model year Chevy Silverado 1500 and Trail Boss trucks as well as the GMC Sierra 1500 and AT4 trucks.
In stock and shipping now, these kits are based around the tried and true high clearance technology that has made BDS the go to for GM suspension lifts. Similar to the current 6" IFS systems for non-Trail Boss/AT4 models, these new 4" systems have been designed from the ground up to get more out of your truck with the most ground clearance on the market. While some companies build "kits" to fit larger tires, BDS Suspension prides itself in engineering complete suspension systems designed to take your vehicle's performance to the next level while retaining OE-level functionality. Case in point the (NHTSA) National Highway Traffic Safety Administration's FMVSS No.126 compliance standards requiring any aftermarket modification to not adversely effect the vehicle's electronic stability control (ESC) system performance in the event of an evasive maneuver. These new kits have been independently tested and certified compliant with these standards.

At the heart of this new 4" IFS system BDS utilizes a pair of 1/4" thick laser cut high clearance crossmembers to maximize clearance and provide a solid mounting point for the OE lower control arms. These paired with the 3-piece heavy duty front skid plate system create a rigid subframe while adding protection for vital steering and driveline components. In place of the factory steering knuckles a pair of specially designed ductile iron replacement steering knuckles are supplied to maintain proper steering geometry for ESC system compatibility while also allowing a wider range of wheel fitment options to include factory 20" wheels. These connect to the factory steering with a pair of heavy duty replacement tie rod ends included in the kit. The front differential is repositioned with BDS's multipoint relocation bracket system tying into the frame and control arm pockets to further secure the front differential to keep CV axle angles at a minimum. Additional ride height on this particular kit comes from a set of top mounted steel fabricated strut spacers to mount onto the factory strut assemblies. In either case these spacers will net 4" of lift above factory ride height, on the Trail Boss/AT4 ride height will be similar to a 6" equipped standard Silverado/Sierra. These allow for quick-simple installation without the need to disassemble the factory struts and retain the OE ride quality. A pair of BDS-branded sway bar drop brackets used to correct the operating angle of the factory sway bar as well as created a strong brace between the rear crossmember and the frame. Rounding out the front of this kit are new lower control arm cam bolts to allow alignment and a weld-in frame reinforcement plate for extra strength.

In the rear of this 4" lift system, a lift block and longer u-bolts it utilized to lift and level the stance, the standard trucks use a 3" block while on the Trail Boss/AT4 kits a 5" rear lift block replaces the factory 2" block to net 3" of lift for a level stance. Also included in the rear are relocation brackets for the brake lines and ABS lines and your choice of replacement rear shocks. BDS offers specially tuned NX2 nitro series gas shocks as well as FOX 2.0 IFP performance series gas shocks for even better performance and heat dispersion. Standard Silverado/Sierra models can fit 33-35" tires, while Trail boss/AT4 can kit 35-37" tires. All kits come finished in a durable textured black powdercoat and sent with all hardware packs to complete the install along with step-by-step installation instructions. All BDS kits include Factory Protection Plus for the ultimate extended warranty to include BDSs No Fine Print Warranty, FMVSS No.126 (ESC System) compliance certification and a 5year-100mile drivetrain warranty to match the dealer. Improve the look and capability of your 2019 Chevy/GMC 1500 or Trail Boss/AT4 truck with the new 4" lift systems from BDS Suspension.

Check instructions for additional tire & wheel fitment combinations
Tire & Wheel Combinations
32"x12.50 w/20x9/22x9 and 5.5 - 6.25" back spacing
37"x12.50 w/20x9/22x9 and 5.5" back spacing
33"x12.50 w/20x9/22x9 and 4.5" - 6.25" back spacing
*Trimming may be required*

Est. Installation: 8 hours
Difficulty Level (easy 1 - 5 complicated): 4