Cylinder Assist Steering Kits - Jeep Wrangler JL Rubicon 392 HEMI (2021+)
Can I pick up my order or have it installed at your shop?
Can I pick up my order or have it installed at your shop?
Absolutely. We offer local pickup on most products and full professional installation at our shop in Washington, MO. Whether you just want to grab your parts or have our techs handle the install, we’ve got you covered. Give us a quick call at 636-429-7020 or message us to schedule a visit — we’ll make sure the parts are ready when you arrive.
How do I know if this part fits my vehicle?
How do I know if this part fits my vehicle?
Unsure if it’ll fit? No problem — that’s what we’re here for. Send us your vehicle’s year, make, and model, and we’ll verify fitment before you order. We can also point you toward compatible upgrades or supporting parts if needed.
What if I need to return a product or it’s defective?
What if I need to return a product or it’s defective?
Most unused items can be returned within 30 days in their original packaging. Some products are covered by a manufacturer’s warranty as well. If something arrives damaged or doesn’t meet your expectations, just let us know — we’ll help you get it replaced, refunded, or repaired. (Tracking updates are also emailed automatically once your order ships.)
What's the lead time on custom or fabricated parts?
What's the lead time on custom or fabricated parts?
Many of our parts are built to order — especially fabricated or performance components. These can take additional time to produce before shipping. Lead times vary by manufacturer and demand, but we’ll always keep you updated along the way. If you’re working on a tight schedule, reach out before ordering at 636-429-7020 and we’ll confirm current availability or estimated ship dates.
Description
Description
If you’ve got a JL 392 and big tires, you already know the factory steering just doesn’t cut it. Whether you’re running stock axles or a full aftermarket setup, PSC’s Cylinder Assist Steering Kits are built to handle the power of the HEMI and the punishment of off-road driving.
These kits come fully assembled with all the hoses, fittings, brackets, and hardware you need for a clean install. You’ll get our specially valved High Performance Steering Gear with PSC’s High Flow Tower and custom spool valve, plus an upgraded pump designed to keep up with the demands of the cylinder assist system.
We also include a high-capacity remote reservoir, high-flow heat sink cooler, anti-splash valve, and PSC 715 High-Performance Power Steering Fluid. It’s everything you need to upgrade your steering and keep it rock-solid on the trail and smooth on the street.

















