BIG BORE XD® Steering Systems - RAM 4500/5500 Diesel (2017-2024)
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
Heavy-duty trucks need heavy-duty steering—and that’s exactly what PSC’s BIG BORE XD Steering Gear delivers for your RAM 4500 or 5500. Whether you’re hauling, towing, or working your truck hard every day, this gear is built to handle it without breaking a sweat.
The SG858 series is 100% brand new (no core charge), and it’s a direct replacement for Mopar 68236674AD. It’s tuned with PSC’s ported and balanced valving for smoother control and better road feel, even with oversized tires or heavy loads.
Want even more muscle? The Cylinder Assist version adds hydraulic power to help turn those big tires like they’re stock—especially handy when you're loaded down or off-road.


