Product Description
The PSC SK689R36JP2-8.0W-1.75 Cylinder Assist Steering Kit is engineered to completely transform steering performance on the 2018-2020 Jeep Wrangler JL equipped with the 3.6L Pentastar Non-ETorque engine. Designed for extreme off-road applications, this complete steering system upgrade includes PSC’s legendary Big Bore XD steering gearbox, hydraulic assist cylinder, high-flow pump kit, and supporting hardware to deliver unmatched steering control when running oversized tires, aftermarket axles, and locking differentials. PSC developed the Big Bore XD steering platform to solve common Jeep JL steering issues while dramatically increasing steering torque output. The system upgrades the factory piston size to 80mm for increased turning force and enlarges the sector shaft diameter from 42mm to 45mm for superior durability. This allows drivers to confidently run 37-inch and larger tires without excessive steering effort or component stress. The included 8.0 inch stroke hydraulic assist cylinder and weld-on axle tabs provide powerful steering assistance under extreme load conditions while also functioning as a dynamic steering stabilizer. Combined with PSC’s high-flow mechanical pump and remote reservoir system, the SK689R36JP2 kit eliminates common overheating problems found in factory electro-hydraulic systems and ensures consistent steering performance on and off the trail. Whether you're building a serious rock crawler, trail Jeep, or overland vehicle, this PSC steering system provides the durability and precision required for aggressive off-road driving.
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
- Vehicles equipped with aftermarket front axles with 8.0 inch lock-to-lock travel
- Designed for 1.75 inch tie rod diameter
- Recommended for vehicles running 37 inch or larger tires
- Ideal for off-road builds with locking differentials and heavy duty suspension upgrades
Specifications for psc SK689R36JP2-8.0W-1.75
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK689R36JP2-8.0W-1.75 |
| UPC | 687927188839 |
| GTIN | 687927188839 |
| Steering Gear | PSC Big Bore XD Steering Gearbox |
| Cylinder Stroke | 8.0 Inch Hydraulic Assist Cylinder |
| Tie Rod Clamp Size | 1.75 Inch |
| Pump Type | High-Flow Belt Driven Pump with Remote Reservoir |
| Kit Includes | Steering Gearbox, Hydraulic Cylinder, Pump Kit, Reservoir, Cooler, Hoses, Fittings, SWEPCO Power Steering Fluid |
| 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 PSC cylinder assist system adds a hydraulic ram to the steering linkage which dramatically reduces steering effort when running large tires or locking differentials. It also stabilizes steering during aggressive off-road driving.
Is this kit compatible with the factory Jeep JL steering system?
This system replaces key components of the factory steering system and is designed for modified Jeep JL vehicles with aftermarket axles and oversized tires.
Does this kit include a steering pump?
Yes. The SK689R36JP2 kit includes a high-flow mechanical power steering pump, reservoir, cooler, hoses, and all required fittings for installation.
What tire size is this steering kit designed for?
PSC designed this kit specifically for Jeep JL vehicles running 37-inch or larger tires where factory steering systems struggle under heavy loads.
Is welding required to install this kit?
Yes. The hydraulic assist cylinder uses weld-on axle tabs which must be properly installed to the front axle housing for correct operation.
