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  • PSC steering kit with steering gear, four black bottles of PSC 715 hydraulic oil, pulley, cylinder, cooler, hoses, clamp, mount, reservoir and fittings with a white background.
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BIG BORE XD® Cylinder Assist® Steering Kit - Jeep Wrangler YJ 4.0L (1990-1994)

BIG BORE XD® Cylinder Assist® Steering Kit - Jeep Wrangler YJ 4.0L (1990-1994)

$2,915.00
$2,915.00
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Part Number: SK230

Axle Stroke

These kits are built for Jeep people who actually use their Jeeps. If you’ve got a YJ with a 4.0L and you're running lockers, big tires, or just hitting the trail hard, PSC’s Cylinder Assist Steering Kits are exactly what you need to keep control when things get gnarly.

We offer two versions—SK230 with a 6" stroke and SK231 with an 8" stroke—so you can match your setup and suspension travel. Both kits are trail-proven, bolt-on (with some welding for the ram mount), and built to handle real off-road abuse.

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About:About:

Why you’ll love it

  • Hydraulic assist makes steering easy—even with big tires and lockers
  • Designed specifically for the YJ’s steering geometry and 4.0L engine
  • Two stroke options to match your axle travel

Tech InfoTech Info

Heads‑up for installers

  • Choose the right stroke for your axle setup:

SK230 – 6" stroke

SK231 – 8" stroke

  • You’ll need a high-performance power steering pump (PSC recommended)
  • Ram mount may require welding depending on your axle

Fitment

Jeep Wrangler YJ 4.0L – 1990–1994

Ideal for

YJ owners running 35”+ tires

Specs

  • PSC Cylinder Assist Ram (6" or 8" stroke)
  • PSC Steering Gear (YJ-specific)
  • High-Pressure Hose Kit
  • Ram Mounting Brackets
  • PSC 715 Fluid

What’s included

  • Complete Cylinder Axle Kit (choose SK230 or SK231):

SK230: Includes CAK061R-6: Cylinder Assist® Kit – Jeep Wrangler YJ 4.0L (1990–1994) – 6.0" Stroke

SK231: Includes CAK061R-8: Cylinder Assist Axle Kit – Jeep Wrangler YJ (1987–1995) – Weld-On – 8.0" Stroke

  • SG061R: BIG BORE XD Steering Gear – Jeep (1987–2002) – w/ Cylinder Assist Ports
  • PK40JP1: XD Power Steering Pump Kit – Jeep Wrangler YJ 4.0L (1991–1994)
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