PSC SK337 Big Bore XD Cyl Assist Kit, GM 2500/3500 4WD (1999.5-2006), Straight Axle Conversion

This BIG BORE XD Cylinder Assist® Steering Kit is designed for GM 2500 and 3500 straight axle conversions using a Dana 60 front axle. Built to provide increased steering authority for larger tires and demanding off-road applications, it delivers the additional steering force needed for crawling, trail use, and other severe-duty conditions.

The kit includes a PSC BIG BORE XD steering gear, high-performance pump kit with remote reservoir, Cylinder Assist® cylinder with mounting hardware, and hose assemblies designed to work together as a complete steering system. Engineered for proper fit, performance, and reliability, these components provide the steering control and durability required for vehicles equipped with larger tires and heavy-duty axle upgrades.

This listing is PSC part number SK337 (Vehicle | Model Year: 1999.5-2006).

Features

• Built for straight axle conversions - no more steering struggles
• Turns big tires with ease - even aired down on the trail
• Complete kit - everything you need in one box
• PSC-trusted components - tested and trail-proven
• PSC 715 fluid recommended - keeps things cool and smooth

Specifications

• Part Number: SK337
• Vehicle | Model Year: 1999.5-2006
• Steering Gear: SG840R - Big Bore Cylinder Assist Steering Gear
• Pump Kit: High-performance pump with remote reservoir
• Cylinder: 1.5in PSC Assist Cylinder with hardware
• Hose Kit: Complete installation hose kit
• Fluid: PSC 715 recommended
• Compatibility: Straight axle conversion (IFS adaptable with reduced stroke)

Installation Notes

• This kit is designed for Dana 60 straight axle conversions on 1988-1998 or 1999.5-2006 GM 2500/3500 4WD trucks. It can be installed on IFS trucks, but you’ll need a reduced stroke cylinder (6.0in-6.5in) to make it work. A fluid cooler is highly recommended to protect your pump and keep the system running strong.
• Recommended for: GM 2500/3500 4WD trucks (1988-1998), GM 2500/3500 4WD trucks (1999.5-2006), Dana 60 straight axle conversions, PSC fluid coolers and PSC 715 Power Steering Fluid

Fitment

• GM 2500 & 3500 4WD (1988-1998)
• GM 2500/3500 4WD trucks (1999.5-2006)
• Straight axle conversions (Dana 60)
• Can be adapted to IFS with reduced stroke cylinder

What’s Included

• SG840R Cylinder Assist Steering Gear
• High-Performance Pump Kit with Remote Reservoir
• Steering Cylinder Assist Kit with Hardware
• Steering Cylinder Assist Installation Hose Kit