XD Cylinder Assist® Steering Gear – Jeep Wrangler JK/JKU (2007–2018) Jeep-Wrangler-YJ-1989 PSC uses a larger ring

PSC uses a larger ring and rotor design to move more fluid at lower RPMs

Designed specifically for 1987–2001 Jeep Cherokee XJs

Featuring the PSC logo and checkered flag with an eye-catching blue-and-white tribal design

and fittings that seat like they should

The high-flow tower helps move big tires with ease

XD Cylinder Assist® Steering Gear – Jeep Wrangler JK/JKU (2007–2018) Jeep-Wrangler-YJ-1989 PSC uses a larger ringThe SG684 Series gives you the right steering gear for your Jeep Wrangler JK or JKUwhether you're replacing a worn out factory box or stepping up to a full Cylinder Assist setup. At the base level, the SG684 is a brand new OEM style replacement that bolts in like stock and restores proper steering feel. For builds that need more control and strength, the SG684R Cylinder Assist gears take it further. These units are equipped with PSCs integrated valve