The 6.5" coilover conversion system is a game changer for HD performance.
Building upon the tried and true BDS high clearance IFS system, this system allows HD owners the ability to eliminate the traditional torsion bar suspension in favor of FOX 2.5 Performance Elite (PE) coilovers.
At the heart of the system is a pair of FOX 2.5 Performance Elite (PE) coilovers. These aluminum bodied coilovers offer improved damper performance, better heat dissipation and easy damping adjustment via the DSC (dual speed compression) adjusters located on the reservoir allowing you to dial in the high-speed and low-speed compression settings. The DSC adjustment allows for easy adjustment of the vehicle's suspension compression dampening to dial in the ideal ride performance to soak up the bumps, both large and small. The DSC has 12 adjustment points for the high speed compression as well as 10 adjustment points for the low speed compression allowing you to make large or small changes to further improve your performance. These coilovers come pre-tuned and fully assembled to achieve 6.5" of lift. To mount the coilovers BDS supplies a bolt-on bracket that installs on the frame in the shock mount location. A weld-in support gusset is used to reinforce the upper mount, however still allows the kit to be completely reversible if the owner ever chooses to revert back to the torsion bar style suspension and upgrade the suspension on another truck.
In addition to replacing the factory torsion bars, the upper and lower control arms are upgraded to improved strength, travel, and accommodate the new coilovers. The uppers are new performance upper control arms designed specifically for this system to integrate with the 2.5 coilovers. The arms are fabricated from large 1.5" OD x .120-wall tubing for the highest quality, strength and durability. The arms utilize premium ball joints and factory style rubber bushings for smooth, quiet operation and superior durability when compared to arms with uni-balls, poly bushings or heim-joints. The ball joint cups are repositioned for optimal performance allowing a 30% improvement in wheel travel. The upper control arms are finished in a durable black powdercoat and include a billet aluminum ball joint dust cap. The control arms come fully assembled for easy install right out of the box. To compliment the uppers, the new lower control arms are built from high strength steel, fully boxed with internally gusseted. These lower arms integrate new reinforced lower coilover mounts and similar to the uppers use durometer specific rubber bushings at the frame mount and high quality Moog ball joints at the knuckle mount for quiet, low maintenance operation. This system results in a 2" overall increased track width and increases down travel for improved performance and ride quality and is achieved with a billet aluminum CV spacer.
Along with the coilover conversion, this 6.5" system includes a pair of one-piece laser cut high clearance crossmembers, CNC machined ductile iron steering knuckles to correct tie rod angles and upper ball joint position, heavy duty front skid plate and differential skid plate to increase protection, multipoint differential relocation brackets to secure differential and correct CV axle angles, longer sway bar links and braided stainless steel extended brake lines. We even include a HD inner and outer tie rod kit to complete the package. In the rear, BDS offer both a 3" and 5" rear block and u-bolt kit to lift and level the stance. The 5" rear block kit includes a u-bolt flip kit with new spring plate and the preferred round u-bolts for increased strength and ground clearance. To compliment the performance in the front this system includes precision tuned FOX 2.0 IFP gas shocks in the rear with available upgrades to the matching FOX 2.5 PE shocks. This system allows for up to 38" tires to be installed.
Tire & Wheel Combinations
38x13.50 w/20x9 and 5.5" back spacing
*Trimming may be required*
Est. Installation: 9-10 hours
Difficulty Level (easy 1 - 5 complicated): 4