Product Description
The PSC SK689R36JP3-8.0W-1.5OS Cylinder Assist Steering Kit is a premium steering upgrade engineered specifically for 2020+ Jeep Gladiator JT and Wrangler JL/JLU equipped with the 3.6L Pentastar Non-ETorque engine. Built around PSC’s legendary Big Bore XD steering gearbox, this system replaces the factory electro-hydraulic steering configuration with a high-performance mechanical power steering solution capable of handling oversized tires and demanding off-road conditions. This weld-on kit is designed for vehicles running aftermarket front axles with 8.0" lock-to-lock steering travel. It includes an 8.0-inch stroke hydraulic assist cylinder and a 1.5-inch offset tie rod clamp, providing the additional steering force required when running large tires, lockers, and heavy off-road components. PSC engineered the Big Bore XD steering gear with a significantly larger piston and stronger internal components to deliver improved steering torque, reduced steering wheel play, and enhanced durability under extreme off-road loads. When combined with PSC’s high-flow pump and assist cylinder, this kit transforms the steering feel of lifted Jeeps running 35-inch tires and larger. Whether you're building a hardcore rock crawler, overland Gladiator, or trail-ready Wrangler JL, the PSC SK689R36JP3-8.0W-1.5OS kit delivers unmatched steering control, reliability, and precision.
Fitment
- 2020+ Jeep Gladiator JT – 3.6L Pentastar Non-ETorque
- 2018+ Jeep Wrangler JL
- 2018+ Jeep Wrangler JLU
- Vehicles equipped with aftermarket front axles
- Designed for 8.0 inch lock-to-lock steering travel
- Compatible with vehicles running 35" tires or larger
Specifications for psc SK689R36JP3-8.0W-1.5OS
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK689R36JP3-8.0W-1.5OS |
| UPC | 687927188938 |
| GTIN | 687927188938 |
| Cylinder Stroke | 8.0 Inches |
| Tie Rod Clamp | 1.5" Offset Clamp |
| Steering Gear | PSC Big Bore XD Steering Gearbox |
| Installation Type | Weld-On Cylinder Assist Mount |
| Shipping Info | Approx. Weight 57 lbs |
| 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 cylinder assist system adds additional steering force through a hydraulic ram connected to the steering linkage. This dramatically reduces steering effort when running large tires, locking differentials, and heavy off-road components.
Is this kit required for large off-road tires?
For Jeeps running 35" tires or larger, especially with aftermarket axles and lockers, hydraulic assist steering greatly improves steering performance and component longevity.
What is the advantage of the PSC Big Bore XD steering gearbox?
The Big Bore XD steering gear uses a larger internal piston and stronger components to produce significantly more steering torque while improving steering feel and reducing steering wheel play.
Does this kit work with factory axles?
This specific version is designed for aftermarket front axles with 8.0 inch lock-to-lock travel. PSC offers additional versions for factory axle configurations.
Is this compatible with Jeep eTorque engines?
No. This version is specifically engineered for 3.6L Pentastar Non-ETorque engines.
