Product Description
The PSC SK689R36JP3-6.75W-1.25 Cylinder Assist Steering Kit is a complete high-performance hydraulic steering solution engineered for 2020+ Jeep Gladiator JT and Wrangler JL equipped with the 3.6L Pentastar Non-eTorque engine. Designed for serious off-road builds, this system replaces the factory electro-hydraulic steering design with a powerful mechanical pump system paired with PSC’s legendary Big Bore XD steering gearbox. Built to handle oversized tires, aggressive off-road terrain, and aftermarket axle upgrades, this PSC kit delivers increased steering torque, improved turning control, and significantly reduced steering effort when running lockers or 37-40 inch tires. The included 6.75 inch stroke hydraulic assist cylinder provides powerful steering assistance while maintaining precise driver feedback in demanding trail conditions. The weld-on assist configuration is designed for vehicles running aftermarket 6.75 lock-to-lock front axles and includes a 1.25 inch tie rod clamp for secure cylinder mounting. This kit integrates PSC’s proven steering technology used across competitive rock crawling, Ultra4 racing, and extreme off-road applications. Whether your Gladiator or Wrangler is built for rock crawling, trail riding, or high-load steering environments, the PSC SK689R36JP3 system provides the durability and steering authority needed to confidently control your vehicle.
Fitment
- 2020+ Jeep Gladiator JT
- 2018+ Jeep Wrangler JL / JLU
- 3.6L Pentastar engine – Non-eTorque models
- Vehicles running aftermarket front axles with 6.75" lock-to-lock travel
- Designed for hydraulic cylinder assist steering systems
- Recommended for vehicles running 37"-40"+ tires
Specifications for psc SK689R36JP3-6.75W-1.25
| Specification | Details |
|---|---|
| Manufacturer | PSC Motorsports |
| Part Number | SK689R36JP3-6.75W-1.25 |
| UPC | 687927187726 |
| GTIN | 687927187726 |
| Steering Gearbox | PSC Big Bore XD Steering Gear |
| Steering Pump | High-Flow Mechanical Power Steering Pump Conversion |
| Hydraulic Cylinder | 6.75 inch stroke cylinder assist |
| Tie Rod Clamp Size | 1.25 inch |
| Mount Style | Weld-On Cylinder Mount Tabs |
| Kit Includes | Big Bore XD gearbox, steering pump kit, hydraulic cylinder, hoses, fittings, mounting hardware |
| Shipping Info | Ships via ground freight due to weight of steering gear and pump components |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What does the PSC Big Bore XD steering gearbox do?
The Big Bore XD steering gear increases piston size and steering torque output, improving steering authority when running oversized tires, lockers, and heavy off-road loads.
Is this kit compatible with factory Jeep front axles?
This version is designed specifically for vehicles running aftermarket front axles with 6.75" lock-to-lock steering travel. Factory axle configurations may require a different PSC steering kit.
Does this kit convert the Jeep steering system?
Yes. The system converts the factory electro-hydraulic steering system to a belt-driven mechanical pump with hydraulic cylinder assist for improved reliability and steering performance.
What tire sizes is this system designed for?
PSC hydraulic assist steering systems are commonly used on builds running 37", 40", and larger tires where factory steering systems struggle under increased load.
Is this steering kit recommended for rock crawling?
Yes. PSC steering systems are widely used in rock crawling, Ultra4 racing, and extreme off-road builds due to their durability and steering torque capabilities.
