4-Inch Lift Kit w/ 4-Link Conversion

The BDS Suspension BDS1538FS is a comprehensive 4-inch lift kit engineered for 2017-2019 Ford F250 and F350 Super Duty trucks equipped with diesel engines. This kit transforms the front suspension by converting the factory radius arms to a BDS 4-link system, utilizing ¼-inch steel brackets for HD upper and lower control arms. This conversion optimizes suspension geometry, corrects axle positioning, and limits caster change throughout wheel travel, leading to enhanced handling, strength, and stability. Steering geometry is refined with a forged drop pitman arm to minimize steering angle and a heavy-duty track bar drop bracket to maintain axle centering and keep components in phase. The kit also features sway bar relocation brackets, brake line brackets, and precision-tuned nitrogen-charged shocks (NX2 Nitro or FOX Performance). In the rear, the kit incorporates a high-strength fabricated lift block, offering a 5-inch lift, along with longer u-bolts and matching rear shocks. The multi-leaf progressive design of the rear springs, combined with tapered and roll-pointed leaves and anti-friction pads, contributes to increased wheel travel, a softer ride, and higher articulation. This suspension kit allows for the fitment of up to 37 x 12.50-inch tires, though minor trimming may be required. Installation difficulty is rated as difficult, with an estimated time of 8-10 hours, requiring tools such as a 30mm socket, torque wrench, cutoff tool, drill, hydraulic jack, and a pitman arm puller. Notes indicate that a Carrier Bearing Drop Kit (BDS123402) may be required for trucks equipped with a 2-piece rear driveshaft, and a factory rear sway bar will require part number 123005.