XDR Cylinder Assist® Steering Gear – Jeep Jl 392 Rubicon (2021–2024) – Special Valving

If you’re wheeling a JL 392 Rubicon, you already know it’s a beast—but the factory steering? Not quite up to the task when you throw on lockers, big tires, and hit the rocks. That’s where PSC’s XDR Cylinder Assist Steering Gear comes in.

This gear is custom-valved specifically for the 392’s EHPS system. It’s got a 16:1 ratio for smooth highway manners and a beefy 42mm sector shaft wrapped in a steel case for serious durability. The high-flow tower helps move big tires with ease, and when paired with a Cylinder Assist kit, it acts like a built-in steering stabilizer—so you get better control and less feedback from rough terrain.

Heads‑up for installers

 This gear is designed for the 392 Rubicon’s EHPS setup—don’t try to swap it into a standard JL. Pair it with the correct PSC Cylinder Assist® kit for best results. If you’re running a Synergy MFG track bar or brace, check clearance before install.

What’s included

• PSC Cylinder Assist Kits for JL 392
• PSC High-Performance Pump Kits
• Off-road builds running lockers and 37"+ tires

Use it with

• PSC Cylinder Assist Kits for JL 392
• PSC High-Performance Pump Kits
• Off-road builds running lockers and 37"+ tires

Install Instructions

Bolt placement for SG689R for 2018-2023 Jeep JL/JLU

OEM Cross Reference

Direct replacement for Mopar 68565862AE - SG693R