Product Description
Take complete control of your Jeep Wrangler steering system with the PSC SK688R38JP1-8.0W-1.25 Cylinder Assist Steering Kit, engineered specifically for 2007-2011 Jeep Wrangler JK models equipped with the 3.8L engine and aftermarket front axles. This complete hydraulic assist steering system dramatically improves turning power and steering precision when running oversized tires, locking differentials, and heavy off-road loads. Built around PSC’s proven Big Bore XD steering gearbox, this kit significantly increases steering torque output while maintaining smooth road feel. The upgraded gearbox incorporates a larger sector shaft and improved internal components to handle extreme steering loads generated by lifted suspension systems and aggressive off-road driving. This system includes a powerful hydraulic assist cylinder with 8.0-inch stroke capability and a durable weld-on axle mounting system designed for aftermarket axles such as Dana 60 conversions. A heavy-duty 1.25-inch tie rod clamp ensures the steering assist cylinder remains securely mounted under heavy articulation and suspension movement. PSC engineered this complete kit to eliminate common Jeep JK steering issues including steering wander, reduced turning power with oversized tires, and premature steering box wear. With the included high-performance power steering pump, fluid cooler, hoses, fittings, and mounting hardware, this kit provides everything needed for a full steering system upgrade.
Fitment
- 2007-2011 Jeep Wrangler JK
- 2007-2011 Jeep Wrangler JKU Unlimited
- 3.8L EGH V6 engine
- Vehicles equipped with aftermarket front axle (Dana 60 / 1-Ton conversions)
- Designed for vehicles running 35-44 inch tires
- Weld-on steering assist tab installation
Specifications for psc SK688R38JP1-8.0W-1.25
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK688R38JP1-8.0W-1.25 |
| UPC | 687927186828 |
| GTIN | 687927186828 |
| Steering Gearbox | PSC Big Bore XD Steering Gear |
| Assist Cylinder Stroke | 8.0 Inch Stroke |
| Tie Rod Clamp Size | 1.25 Inch |
| Mounting Style | Weld-On Cylinder Tabs |
| Included Components | Steering Gearbox, Pump Kit, Cylinder Assist Ram, Hoses, Cooler, Reservoir, Mounting Hardware |
| Shipping Info | Ships via UPS / Freight depending on warehouse location |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What does a cylinder assist steering kit do?
A hydraulic assist steering kit uses a steering cylinder connected to the tie rod to provide additional steering force. This reduces steering effort when turning oversized tires or navigating difficult terrain.
Is this kit required for larger tires?
PSC recommends hydraulic assist steering for vehicles running tires larger than 35 inches, especially when combined with locking differentials or heavy off-road use.
Does this kit include everything needed for installation?
Yes. The kit includes the steering gearbox, steering pump system, hydraulic assist cylinder, hoses, cooler, fittings, and mounting hardware for a complete steering system upgrade.
What type of axle does this kit work with?
This configuration is designed for aftermarket axles such as Dana 60 conversions with weld-on steering assist tabs and an 8.0-inch lock-to-lock configuration.
Will this improve Jeep JK steering problems?
Yes. PSC Big Bore XD steering kits are specifically designed to correct common Jeep JK steering issues including weak steering boxes, reduced turning power with large tires, and steering system overheating.
