Skip to the beginning of the images gallery

SG688 - Big Bore XD® JK Steering Gear for 2007-18 Jeep JK/JKU

In Stock

SKU

SG688

$1,099.99

Quick Overview

The BIG BORE XD-JK is the most powerful and strongest 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. The BIG BORE XD-JK, when combined with our PK38JP1 or PK36JP1 Pump Kit, 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, and will enable you to enjoy superb on-the-road handling as well as tackle 1-4 rated trails with ease.

For more details read the Product Description below

Don't see what you need or need help making a decision on which product is right for your project?
Contact Us

ALL PICTURES SHOWN ARE FOR ILLUSTRATION PURPOSE ONLY.
ACTUAL KIT CONTENTS MAY VARY DUE TO PRODUCT DESIGN CHANGES AND/OR ENHANCEMENTS.

Product Description

APPLICATION:
2007-2018 Wrangler JK/JKU

PRODUCT FEATURES:
45MM Sector Shaft
NEW XD-JK Proprietary Pitman arm
16:1 Ratio 80MM Piston Assembly
Reinforced Mounting Pad and Case

INSTALLATION NOTES:
WARNING! 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.

WARNING! This product weighs approximately 57 lbs. Work safely and avoid physical injury by using appropriate lifts/tools and/or utilizing the assistance of a work buddy

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.

Review Of Big Bore XD Featured on Fourwheeler Network

Additional Information