PSC Cylinder Assist Steering Kit for 2007-2011 Jeep JK / JKU Wrangler, 3.8L with Aftermarket Axle, 6.75" Lock to Lock

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.

For the daily driver or a project that is not quite ready for a steering assist cylinder installation, we offer the Adventure Series Kit with Cylinder Assist™ capability.

Every PSC BIG BORE XD Cylinder Assist Steering Kit is complete with everything needed for a successful installation.

• 2007-2011 Jeep JK 3.8L with Aftermarket D44* or Spicer UD60 Axle
  • *Supported axles include Currie/Dynatrac/G2 Core/Terraflex D44

• Big Bore XD Steering Gear
• High Volume Pump and Reservoir Kit with Fluid Anti-Splash Valve
• Upgraded OEM-Style High Pressure Hose Assembly
• Fluid Cooler Kit
• Steering Assist Cylinder
• Cylinder Mounting Brackets with Hardware
• Assist Cylinder Installation Hose Kit
• Tie Rod Clamp
• SWEPCO 715 Power Steering Fluid

• Use HWK-688-PP hardware kit when installing the Synergy MFG Track Bar and Sector Shaft Brace with this product.
• Using the Factory or the standard PSC supplied bolts with the Synergy MFG Track Bar and Sector Shaft Brace could result in steering gearbox case failure.
• The larger size of the BIG BORE XD Steering Gearbox may prohibit the use of some aftermarket track bars
• To achieve the best on-the-road driveability, recommended front axle caster setting is 7 degrees POSITIVE.
• A high steer or drag link flip kit may need to be installed on vehicles with more than four (4) inches of lift. There are no drop Pitman arms on the market that fit the Big Bore XD Steering Gear.
• PSC recommends using SWEPCO 715 Power Steering Fluid in all Cylinder Assist Kits.