PSC Motorsport SG688

The PSC Motorsports SG688 Big Bore XD Steering Gear is the perfect upgrade for your Jeep JK if you're looking for enhanced handling and improved steering response. This steering gear is specifically designed for Jeep JK models from 2007 to 2018 and directly replaces the factory steering gear. Here are some of the key features of the PSC Motorsports SG688 Big Bore XD Steering Gear:

The BIG BORE XD-JK is the most powerful replacement steering gear on the market for the Jeep JK. Any Jeep JK with larger tires and/or locking front differential needs this bolt-on upgrade. When combined with our PK38JP1 or PK36JP1 Pump Kit, the BIG BORE XD-JK provides up to 35% more turning power over the factory steering gear.

The sector shaft diameter has been increased from 35MM to 45MM to handle the extra torque output and prevent shear in severe environments. Every Big Bore XD-JK Steering Gear includes a NEW proprietary Pitman arm designed for the larger sector shaft.

Improved on-the-road driving characteristics and significantly increased torque output are achieved by using a 16:1 80MM piston assembly. This increased torque output will turn tire sizes up to 35" without the installation of cylinder assist, enabling you to enjoy superb on-the-road handling and tackle 1-4 rated trails with ease.

Notes:
*Add the HWK-688-PP Bolt Kit (110MM Long) when installing any Synergy MFG Front Track Bar Brace (or similar) with this product.
Using the Factory bolts (90MM Long) or the PSC supplied bolts (100MM Long) with a Synergy MFG Track Bar Brace could result in steering gearbox case failure.

The BIG BORE XD-JK Steering Gear requires a power steering pump capable of approximately 1650 PSI. PSC highly recommends the use of a HIGH FLOW/HIGH-PRESSURE Pump Kit to ensure system efficiency and extend component life. These pumps operate at approximately 1650 PSI and produce 50% more volume than the OEM pump. Vehicle steering performance will be diminished if a high mileage or remanufactured component is used:
PK38JP1: JK/JKU 3.8L High Flow Pump Kit
PK36JP1: JK/JKU 3.6L High Flow Pump Kit

The larger size of the BIG BORE XD-JK Steering Gear may not fit with first generation aftermarket track bars. We recommend scheduling a consultation with a Professional Installer for an evaluation and an appropriate solution determination.

The supplied PSC proprietary Pitman arm does not have any additional drop to it.
Some applications may require a drag link flip kit for proper installation.