Our 6in Performance System has been designed utilizing our industry leading crossmember and spindle technology. Extensive design work was given to the extended length steering knuckles specifically for the Steel component version keeping track width near stock and working properly with the Stablitrac safety functions. The front differential is relocated with heavy duty brackets while a tightly formed 1/4 in thick steel skid plate provides protection for offroad use. The rear suspension is upgraded with add a leafs and 5in tall blocks and u bolts. What sets this 6in Performance system apart from our 6in Basic is the Dirt Logic Shocks. The factory front Coilover shocks are replaced with massive Dirt Logic 4.0 Coilovers for the ultimate in damping capacity. One look at these huge Coilovers and you'll know that you have the biggest shock package under your truck for hardcore offroad use. The Dirt Logic 4.0's have been ride tuned by our shock engineers to provide a supple highway ride with outstanding damping. The rear suspension receives Dirt Logic 2.25 shocks that are tuned for a compliant highway ride with great offroad capability. Dirt Logics are the finest shocks you can buy for your vehicle and will provide a quality ride you can feel each time you drive. - Front lower control arm Crossmember forms to bottom of frame without cutting Offset ductile Steering Knuckles keep tires under fenders Includes Crossmember cross tubes to distribute front suspension impact loads Top of the line Dirt Logic shocks for superior damping and ride Systems compatible with factory Stablitrac.