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  • PSC Motorsports SG688 Big Bore Steering Box Kit for Jeep Wrangler JK 2007-2018
  • PSC Motorsports SG688 Big Bore Steering Box for Jeep Wrangler JK 2007-2018
  • PSC Motorsports SG688 Big Bore Steering Box for Jeep Wrangler JK 2007-2018
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PSC Motorsports Big Bore XD Steering Gear Box (Wrangler JK 2007+)

$945.00 (You save $94.75)
56.00 LBS
Calculated at checkout

    Big Bore XD Steering Gear Box for JK

    The PSC Motorsports Big Bore XD Steering Gear Box is designed to provide your Jeep Wrangler JK with a direct replacement for your 70mm stock piston. This kit uses a larger 80mm piston, giving it more turning torque to turn up to 37" tall tires without the need of cylinder assist. The sector shaft diameter is increased from 35mm to 42mm for a 35% increase in strength. More material was added to the case in all mounting, providing a sturdier base. This is a must-have for anyone running bigger than factory tires.

    • Bolt-On Upgrade
    • 1 Year Limited Warranty
    • Recommended Fluid: Swepco 715 Power Steering Pump Fluid 

    Kit Includes:
    - One (1) Steering Gear Box
    - One (1) Pitman Arm
    - Necessary hardware
    - Installation instructions

    Hose Kit Option:
    For use if you decide to upgrade to a high flow pump.  This will increase flow and prevent fluid from overheating. 

    Jeep Wrangler JK 2 Door (2007-2018)
    Jeep Wrangler JK 4 Door Unlimited (2007-2018)

    Write your own product review

    1. Beef without the leaks  star rating

      Posted by Josh McDuff on 9th May 2018

      I chose to install the PSC XD2 box and XD pump kit on my 2015 Rubicon with 40's to help ease turning while locked and aired down offroad. I could have gone cheaper with a RNR hydro assist kit, however these systems inherently leak or have residue build up from them. I hate leaks, so I went to the most stock like system available, and I'm glad I did. Install instructions could be better from PSC. The box is HEAVY and a second set of hands makes it easier. the pump may not be necessary for all applications, but I wanted the most amount of turning force I could get. I have aired down to single digits multiple times, locked, on sandpaper-like granite, and I don't have issues turning when needed. I don't feel like I'm missing out with hydro assist. I fully expect this system to last me for years on end without any failure just like a stock system would.

    2. turns with one finger  star rating

      Posted by Kyle Kastelitz on 12th Dec 2017

      install was a pain. instructions were lacking from pcs but a quick Google search and a YouTube video later and it's not that hard to install. off-road elements has the write up on how to bleed the system. turns my 35's no problem. was actually scary at first jeep responds like a normal vehicle instead of hand over handing turns. steering feels solid now and if ya get it the pitman arm bolt is 1 5/8th massive thing. I no longer fear the steering box snapping like the one one

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