Overview PSC has developed the BIG BORE XD Steering Kits to be the ultimate steering upgrade package for Jeep JK/JKUs equipped with locking differentials, aftermarket axles, and up to 44" tire sizes. All kits include our top of the line components including the BIG BORE XD Steering Gearbox, High-Performance Power Steering Pump Kit with Remote Reservoir, High Pressure Hose Conversion, Steering Assist Cylinder with Hardware, 1-3/8" Tie Rod Clamp, Fluid Cooler, and SWEPCO 715 Power Steering Fluid. Every PSC BIG BORE XD Cylinder Assist Steering Kit is complete with everything needed for a successful installation. This kit is designed for factory front axles with a truss kit installed, non-trussed kits are also available! KIT INCLUDES 07-18 Jeep JK/JKU BIG BORE XD Cylinder Assist™ Steering Gear 3.6L High Performance Power Steering Pump Kit 6.75” Stroke Cylinder Assist™ Axle Kit *Tie Rod Clamp notes Using the Factory or the PSC supplied bolts with a Synergy MFG Track Bar Brace could result in steering gearbox case failure. The larger size of the BIG BORE XD2 Steering Gearbox may prohibit the use of some aftermarket track bars.