PSC SG062R Big Bore XD Cylinder Assist Steering Gear, Jeep CJ5/CJ7/CJ8 (80-86)

The stock CJ steering gear was fine back when 31s were “big tires.” But if you’re running 35s, a locker, and real trails, that old box is out of its league. The BIG BORE XD Cylinder Assist Gear is built for serious steering muscle—bigger piston, stronger case, and ports machined right into the housing for PSC’s Cylinder Assist system.

This isn’t a reman. It’s 100% new, with billet aluminum top and end caps, and a variable ratio that keeps it stable on the road but strong in the rocks. If you want your CJ to steer like it should—on the street and on the trail—this is the box.

Features

• Cylinder Assist ready - ports are machined, not welded, for strength and serviceability
• Bigger piston = more torque - turns big tires without breaking a sweat
• Billet aluminum top and end caps - built for strength and longevity
• 100% new build - no reman surprises, no worn-out cores
• Factory fit for CJ - bolts inside the frame like stock

Specifications

• Part Number: SG062R
• Gear Type: BIG BORE XD Cylinder Assist
• Ratio: 13-16:1 variable (3.3 turns lock-to-lock)
• Input Shaft: 13/16in - 36 spline
• Ports: Metric O-ring, machined for -6 AN assist fittings
• Mounting: 4-bolt, inside-the-frame
• Covers: Billet aluminum top and end caps
• Assist Ports: Threaded directly into housing (serviceable, no welds)

Installation Notes

• Ideal for: CJs on 35s+, Rigs with front lockers or heavy bumpers/winch setups, Weekend wheelers and vintage builds that still see real trail time
• Recommended for: PSC Cylinder Assist Kit for CJ, PSC High-Flow Pump Kit (don’t starve the gear), PSC Cooler and Inline Filter for system longevity, PSC Hose Kit for assist plumbing

Fitment

• 1980-1986 Jeep CJ5, CJ7, CJ8 Scrambler
• 1977-1979 CJ5 with factory power steering (metric conversion required)
• 1972-1973 Jeep Commando (metric conversion required)

What’s Included

• BIG BORE XD Steering Gear (Cylinder Assist ready)
• Pre-machined assist ports
• Not Included: Hoses, fittings, fluid, or assist cylinder (sold separately).