PSC BIG BORE XD Series with Cylinder Assist Steering Gearbox - 99-10 GM 2500/3500HD

Product Name: PSC BIG BORE XD Series with Cylinder Assist Steering Gearbox - 99-10 GM 2500/3500HD
Manufacturer: PSC Steering
Manufacturer Part #: SG038R
Thoroughbred Diesel Part #: PSCSG038R
Fitment Notes: 1999-2010 GM 2500/3500HD

The factory steering gear in these trucks has always been a weak spot—until now. PSC’s BIG BORE XD® Steering Gear is built to handle the demands of lifted trucks, oversized tires, and serious off-road use. With a beefed-up 45mm sector shaft and upgraded roller bearings, this gear eliminates the deflection and seal failures that plague OEM units. 

Whether you’re running a standard setup or PSC’s Cylinder Assist® system, we’ve got the gear for you. All-new components, no remanufactured parts, and PSC’s proven durability make this a must-have upgrade for your GMC 2500/3500 or Hummer H2. 

Heads?up for installers

• Designed to work with factory 3-Spline pitman arm
• Make sure to flush and bleed the system properly. 
• Cylinder Assist version includes ports for ram assist plumbing. 

Specs

• Sector Shaft: 3 Spline 45 mm diameter (works with factory pitman arm)
• Bearings: Upgraded roller bearings 
• Ports: Standard or Cylinder Assist® (SG038R)
• Build: All-new components, not remanufactured

What’s included

(1) BIG BORE XD Steering Gear (choose standard or Cylinder Assist)

PSC BIG BORE XD Series with Cylinder Assist Steering Gearbox Features:

• PSC BIG BORE XD Series steering gearbox
• Designed for hydraulic cylinder assist steering systems
• Larger bore design increases hydraulic steering force
• Improves steering control with oversized tires and lifted suspensions
• Reduces steering effort during low-speed maneuvering
• Helps minimize steering wander and bump steer
• Reinforced sector shaft and upgraded internal components for maximum durability
• Precision-machined housing for exceptional strength and reliability
• Engineered to withstand extreme off-road, towing, and heavy-load conditions
• Direct-fit replacement for factory steering gearbox
• Compatible with PSC cylinder assist systems and related steering upgrades
• Helps reduce stress on steering linkage and suspension components
• Ideal for off-road, rock crawling, towing, work truck, and competition applications
• Thoroughly tested for quality, performance, and long service life
• Manufactured by PSC Motorsports for industry-leading steering performance
• Built to deliver precise steering response and dependable operation in the most demanding environments
• For more information on PSC Steering call us at 1-859-737-4966