Product Description
Take control of oversized tires and aggressive off-road terrain with the PSC SK689R36JP2-6.75W-1.375 Cylinder Assist Steering Kit for the 2018-2020 Jeep Wrangler JL / JLU equipped with the 3.6L Pentastar Non-ETorque engine. Designed around PSC’s industry-leading BIG BORE XD steering gear, this complete steering system dramatically increases steering torque, reliability, and control when running aftermarket axles and large off-road tires. The factory Jeep JL electro-hydraulic steering system struggles under heavy loads from oversized tires, locking differentials, and aggressive off-road driving. PSC engineered this kit from the ground up to solve these issues by converting the system to a high-flow mechanical steering pump combined with a 6.75-inch stroke hydraulic assist cylinder. The result is significantly reduced steering effort and improved steering precision both on and off the trail. At the heart of the system is the BIG BORE XD steering gearbox, which increases piston size from 70mm to 80mm and upgrades the sector shaft from 42mm to 45mm for increased strength and torque output. The included hydraulic assist ram functions as a dynamic steering stabilizer, helping control large tires and heavy off-road loads with smooth steering response. This weld-on cylinder assist kit is engineered specifically for Jeep JL builds running aftermarket front axles with 6.75" lock-to-lock travel and a 1.375" tie rod, making it an ideal upgrade for serious trail rigs, rock crawlers, and overland builds.
Fitment
- 2018 Jeep Wrangler JL 3.6L Non-ETorque
- 2019 Jeep Wrangler JL / JLU 3.6L Non-ETorque
- 2020 Jeep Wrangler JL / JLU 3.6L Non-ETorque
- Designed for aftermarket front axles with 6.75" lock-to-lock steering travel
- Compatible with 1.375" tie rod diameter
- Not compatible with factory electric-hydraulic steering systems
Specifications for psc SK689R36JP2-6.75W-1.375
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK689R36JP2-6.75W-1.375 |
| UPC | 687927188723 |
| GTIN | 687927188723 |
| Cylinder Stroke | 6.75 Inches |
| Tie Rod Clamp Size | 1.375 Inches |
| Steering Gear | PSC BIG BORE XD Steering Gearbox |
| Pump Type | High-Flow Mechanical Pump Conversion |
| Shipping Info | Free Shipping Available |
| 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 steering force directly to the steering linkage using a hydraulic ram. This reduces steering effort and improves control when running large tires or off-road axle upgrades.
Does this kit replace the factory JL steering pump?
Yes. This kit converts the factory electric power steering system to a belt-driven mechanical pump, which eliminates overheating issues and improves reliability under heavy steering loads.
Is this kit designed for stock Jeep JL axles?
No. This version is specifically designed for aftermarket front axles with 6.75-inch lock-to-lock steering travel and a 1.375-inch tie rod diameter.
What size tires benefit most from this steering upgrade?
Vehicles running 35-inch to 40-inch tires, locking differentials, or heavy off-road loads will see the greatest improvement in steering performance.
Why choose PSC steering systems?
PSC Motorsports is widely recognized as the industry leader in high-performance hydraulic steering systems used in rock crawling, Ultra4 racing, and extreme off-road applications.
