Product Description
The PSC SK689R36JP2-8.0W-1.5OS Cylinder Assist Steering Kit is a complete high-performance steering upgrade engineered for the 2018-2020 Jeep Wrangler JL/JLU equipped with the 3.6L Pentastar Non-ETorque engine. Designed specifically for builds running larger tires and aftermarket axles, this PSC system replaces the factory electro-hydraulic steering components with a proven high-flow mechanical steering system. At the heart of the system is PSC’s Big Bore XD steering gearbox, which upgrades the factory 70mm piston to a massive 80mm piston and increases the sector shaft diameter for significantly improved steering torque and durability. This allows drivers to maintain precise steering control even with aggressive off-road setups and tires exceeding 35 inches. The kit also includes an 8.0-inch stroke hydraulic assist cylinder with a 1.5" offset tie rod clamp, allowing seamless integration with aftermarket 8.0-inch lock-to-lock axles. Combined with PSC’s high-flow pump conversion kit, upgraded hoses, and cooler system, this steering kit eliminates factory steering weaknesses while dramatically improving responsiveness and reliability on and off the trail. Whether your Jeep is built for rock crawling, overlanding, or high-speed desert terrain, the PSC SK689R36JP2-8.0W-1.5OS steering system provides the steering strength and control serious off-road builds demand.
Fitment
- 2018 Jeep Wrangler JL 3.6L Pentastar Non-ETorque
- 2019 Jeep Wrangler JL / JLU 3.6L Pentastar Non-ETorque
- 2020 Jeep Wrangler JL / JLU 3.6L Pentastar Non-ETorque
- Designed for aftermarket front axles with 8.0" lock-to-lock steering
- Requires straight tie rod for 1.5" offset clamp
- Recommended for vehicles running 35-37"+ tires
Kit Includes
- PSC Big Bore XD steering gearbox
- High-flow mechanical power steering pump conversion kit
- PSC 8.0" stroke cylinder assist axle kit
- 1.5" offset tie rod clamp
- High-pressure hoses and return lines
- Fluid cooler and reservoir kit
- Mounting hardware and fittings
- Power steering fluid
Specifications for psc SK689R36JP2-8.0W-1.5OS
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK689R36JP2-8.0W-1.5OS |
| UPC | 687927188815 |
| GTIN | 687927188815 |
| Cylinder Stroke | 8.0 Inch |
| Tie Rod Clamp | 1.5 Inch Offset Clamp |
| Steering System Type | Hydraulic Cylinder Assist Steering System |
| Shipping Info | Ships via UPS / Freight depending on location |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What does a cylinder assist steering system do?
A cylinder assist steering system uses a hydraulic ram to help turn the wheels, dramatically reducing steering effort when running large tires, lockers, or heavy off-road loads.
Why upgrade to the PSC Big Bore XD steering gear?
The Big Bore XD gear increases piston size and sector shaft strength, providing significantly more steering torque and durability than the factory JL steering system.
Will this kit work with factory JL axles?
No. This version is designed for aftermarket axles with approximately 8.0" lock-to-lock steering travel.
Does this kit replace the factory electric power steering pump?
Yes. The PSC system converts the vehicle to a high-flow mechanical pump system which eliminates the factory electro-hydraulic pump limitations.
Is this kit recommended for larger tires?
Yes. PSC steering kits are specifically designed to maintain proper steering control when running 35-37"+ tires, locking differentials, and heavy off-road suspension systems.
