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  • Collection for SK857-OE featuring a black PSC steering gear, mounting brackets, hoses, hardware, steering cylinder and four PSC 715 Steering fluid bottles.
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BIG BORE XD® Cylinder Assist® Kit – RAM 2500 / 3500 (2020–2024) – Lane Assist Compatible

BIG BORE XD® Cylinder Assist® Kit – RAM 2500 / 3500 (2020–2024) – Lane Assist Compatible

$2,065.00
$2,065.00
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Part Number: SK857-OE

This BIG BORE XD Cylinder Assist Kit is the ultimate steering upgrade for your 2020–2024 RAM 2500 or 3500. Built to handle big tires and heavy loads, it delivers rock-solid control without fighting the wheel. Everything’s bolt-on, lane-assist friendly, and tuned by PSC for smooth, confident steering whether you’re towing, hauling, or crawling.
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About:About:

Why you’ll love it

  • BIG BORE XD Steering Gear with PSC ported, balanced, and tuned valving for maximum control.
  • Lane Assist compatible—keeps factory safety features working like they should.
  • Pre-assembled hoses and fittings for a quick, clean install.
  • Bolt-on brackets and hardware—no cutting, no welding.
  • PSC 715 power steering fluid included for peak performance.

Tech InfoTech Info

Heads‑up for installers

Double-check hose routing and bracket alignment before tightening everything down. This kit is designed for a true bolt-on install—no mods needed if you follow the steps.

Before you order, we recommend double-checking your axle’s
steering travel measurement to make sure you get the right kit. If you’re not sure how to measure, there’s a quick ‘How to Measure’ video at the bottom of this product page to walk you through it.

Fitment

  • RAM 2500 / 3500 (2020–2024)
  • Compatible with factory lane assist and torque overlay systems

Specs

  • BIG BORE XD Steering Gear
  • 1.5" Cylinder Assist Ram
  • Fully assembled hoses and fittings

What’s included

Box 1:
SG857R: BIG BORE XD Cylinder Assist Steering Gear
Box 2:
CAK858: Bolt-On Cylinder Assist Axle Kit

SupportSupport

OEM Cross Reference

Mopar 68236674AD direct replacement

California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov