a bigger piston for more torque
The BIG BORE XD Cylinder Assist Steering Kit is built to handle the abuse of off-roading and the demands of daily driving
these kits deliver the flow and pressure you need to keep control on the trail and on the road
The factory Mercedes ZF box on ’03–’06 TJ/LJ Wranglers
We’ve put together everything you need to feed your steering system the right way—no hunting for fittings
BIG BORE XD® Cylinder Assist® System - Jeep Wrangler TJ/LJ 4.0L (2003-2006) Actual Steering Measurement:6.75" a bigger piston for moreBuilt for Jeep TJ and XJ owners running Ford D60 axles, these PSC steering kits are the real deal no reconditioned parts, no guesswork. Whether you're going full Cylinder Assist or just upgrading your gear and pump, each kit includes everything you need to get your vehicle steering like it should. From silver PSC steering gears and high performance pumps to reservoirs, coolers, hoses, clamps, mounts, and fittings plus PSC 715 fluid to keep things