Product Description
PSC Cylinder Assist Steering Kit | 3.6L with OEM Axle (Wrangler JL & Gladiator JT 2021+)
You’ve lifted your JL or JT, slapped on 37s or bigger, and now your steering feels like a workout — this kit’s your fix.
PSC’s legendary BIG BORE XD Cylinder Assist Steering Kits are built to handle the extra load and torque that come with oversized tires, beefed-up axles, and all the gear you’ve bolted on. Whether you’re aired down and off-roading, towing, or just daily driving and mall crawling, this is a critical upgrade that’ll make your Jeep steer like it should.
We bumped the stock 70mm piston to a beefy 80mm for more torque, and upgraded the sector shaft from 42mm to 45mm to eliminate the all-too-common shear problem. Don’t trust sensors and computers to decide how much pressure you need? Good — this kit includes a belt-driven, mechanical pump that puts you in control.
Every kit comes complete with a steering gear, pump, pre-fab hose assemblies, fluid cooler, PSC’s 715 Power Steering Fluid, and your choice of a Tie Rod Clamp or No-Weld Brackets for unmodified factory axles and tie rods.
Running factory or aftermarket axles? Third-party tie rod? No problem. Just pick the right axle travel length (6.75", 7.5", or 8.0") and clamp size to match your setup — and you’re good to go.
Kit Includes:
- Big Bore XD steering gear
- XD pump kit
- Assist cylinder kit
- Hose assemblies, JIC adapter fittings (if applicable), fluid cooler, SR-VT anti-splash valve and power steering fluid
- Easily turns big tires—no more arm wrestling your Jeep
- Mechanical pump = reliable, constant power without computer control
- Built tough to ensure minimum maintenance and maximum fun
Notes:
** Use HWK-689-PP (available separately) when installing a Synergy MFG Track Bar and Sector Shaft Brace with this product. Using the shorter OEM or the standard 100mm bolts supplied with the XD-JL steering gear box could result in steering gear box case failure
*** The larger size of the Big Bore XD-JL steering gear box may prohibit the use of some aftermarket track bars
**** A Tazer JL Programmer (available separately) will be needed to override the OEM electro-hydraulic pump functions when installing the PSC High Flow Mechanical Pump Conversion Kit
***** Fits 2020+ JL 3.6L non-eTorque and 2020+ JT 3.6L
