Product Description
The PSC SK688R38JP1-OE-1.375 Cylinder Assist Steering Kit is a complete hydraulic steering upgrade engineered for the 2007-2011 Jeep Wrangler JK and JKU equipped with the 3.8L engine. Designed specifically for vehicles using OE front axles and a 1.375 inch tie rod, this PSC steering system dramatically improves steering power, control, and durability when running oversized tires or demanding off-road terrain. At the heart of this kit is PSC’s renowned BIG BORE XD steering gearbox, delivering increased steering torque and improved steering response compared to factory components. The included 6.75-inch stroke steering assist cylinder adds hydraulic assistance to reduce steering effort while maintaining precision control over rocks, mud, sand, and trail obstacles. PSC designed this system as a true bolt-on steering assist solution for OE axle Jeep JK builds. With upgraded hoses, high-flow power steering pump, fluid cooler, reservoir system, and all required mounting hardware included, this kit provides everything required to transform the steering performance of your Wrangler. Whether you're running 35-44 inch tires, locking differentials, or heavy off-road suspension upgrades, the PSC SK688R38JP1-OE-1.375 kit delivers the steering strength and reliability required for serious off-road driving.
Fitment
- 2007 Jeep Wrangler JK 3.8L
- 2008 Jeep Wrangler JK 3.8L
- 2009 Jeep Wrangler JK 3.8L
- 2010 Jeep Wrangler JK 3.8L
- 2011 Jeep Wrangler JK 3.8L
- 2007-2011 Jeep Wrangler Unlimited JKU 3.8L
Vehicle Requirements:
- OE front axle configuration
- 1.375 inch tie rod diameter
- Recommended for vehicles running tires larger than 35 inches
Specifications for psc SK688R38JP1-OE-1.375
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK688R38JP1-OE-1.375 |
| UPC | 687927188389 |
| GTIN | 687927188389 |
| Steering Gear | PSC BIG BORE XD Steering Gearbox |
| Assist Cylinder Stroke | 6.75 Inch |
| Tie Rod Clamp Size | 1.375 Inch |
| Axle Compatibility | OE Axle |
| Shipping Info | Free Shipping Available |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What does a PSC cylinder assist steering kit do?
A cylinder assist steering kit adds a hydraulic steering ram that assists the steering gearbox. This significantly reduces steering effort while increasing steering control when running large tires or heavy off-road suspension setups.
Is the PSC SK688R38JP1-OE-1.375 kit bolt-on?
Yes. This version of the kit is designed as a bolt-on system for Jeep JK models equipped with OE axles and a 1.375 inch tie rod diameter.
What components are included in this PSC steering kit?
The kit includes a BIG BORE XD steering gearbox, steering assist cylinder, high-performance power steering pump kit, fluid cooler, reservoir, hoses, tie rod clamp, mounting brackets, and required hardware.
What tire size is this steering system designed for?
PSC cylinder assist steering systems are commonly used on Jeep JK builds running 35-44 inch tires where factory steering systems struggle with steering load.
Why upgrade to a PSC Big Bore XD steering system?
PSC systems provide increased steering torque output, eliminate steering pump overheating, and dramatically improve steering precision in extreme off-road environments.
