If you’ve got a 2020–2024 RAM 2500 or 3500 with Lane Assist and you’re tired of vague steering or fighting the wheel under load, PSC’s BIG BORE XD Steering Solutions are built to fix that. These steering gears and kits are designed to work with your factory torque overlay system, so you get tighter control, better handling, and no warning lights or compatibility issues.

The SG857 gear features PSC ported, balanced, and tuned valving, a massive internal piston, and a 45mm sector shaft supported by a beefed-up lower bearing. That means no more wandering, no more steering brace needed, and no more second-guessing your truck’s handling.

Want even more control? The Cylinder Assist version adds hydraulic muscle to help turn big tires like they’re stock. And if you’re ready to go all-in, the complete Cylinder Assist Kit includes everything you need—gear, ram, hoses, brackets, and fluid—all bolt-on and ready to roll.

Direct Fit Replacement
Sector Shaft Diameter: 45mm
Internal Piston: 80mm
Steering Ratio: 16:1 (approx. 3.5 turns lock-to-lock)
Ports: Compatible with OEM high-pressure and return lines
Pitman Arm Compatibility: Works with factory and aftermarket arms
Finish: Black Painted Casting