Product Description
Upgrade the steering strength and control of your heavy-duty RAM with the PSC SK856 Big Bore XD Cylinder Assist Steering Kit. Designed specifically for 2009-2015 Dodge RAM 2500 and 3500 4WD trucks, this complete hydraulic steering assist system dramatically increases steering force while maintaining excellent road feel and predictable handling. The SK856 kit includes PSC’s proprietary Big Bore XD steering gearbox paired with a high-strength steering assist cylinder, mounting brackets, and high-pressure hoses to create a complete steering assist system. This setup is engineered to handle the additional steering loads created by oversized tires, aftermarket axles, locking differentials, and extreme off-road use. By distributing steering force between the gearbox and the hydraulic assist ram, the PSC system significantly reduces stress on the steering gear and steering linkage. The result is smoother turning, improved low-speed maneuverability, and far better control when crawling trails, towing heavy loads, or running aggressive tire setups.
Fitment
- 2009 Dodge Ram 2500 4WD
- 2010 Dodge Ram 2500 4WD
- 2011 Ram 2500 4WD
- 2012 Ram 2500 4WD
- 2013 Ram 2500 4WD
- 2014 Ram 2500 4WD
- 2015 Ram 2500 4WD
- 2009 Dodge Ram 3500 4WD
- 2010 Dodge Ram 3500 4WD
- 2011 Ram 3500 4WD
- 2012 Ram 3500 4WD
- 2013 Ram 3500 4WD
- 2014 Ram 3500 4WD
- 2015 Ram 3500 4WD
Ideal for trucks running oversized tires, aftermarket steering components, or vehicles that see heavy off-road or towing use where factory steering systems become overloaded.
Specifications for PSC SK856
| Specification | Details |
|---|---|
| Manufacturer | PSC Steering Components |
| Part Number | SK856 |
| Steering Gearbox | PSC SG856R Big Bore XD Steering Gearbox |
| Steering Cylinder | PSC SC2200K Assist Cylinder |
| Hose Kit | HK2015 Hydraulic Assist Hose Kit |
| Installation | Weld-on assist brackets required |
| UPC | 687927184008 |
| GTIN | 687927184008 |
| Shipping Info | Calculated at checkout |
| Prop 65 | WARNING: Cancer and Reproductive Harm – https://www.P65Warnings.ca.gov |
Frequently Asked Questions
What does a cylinder assist steering system do?
A hydraulic steering assist system adds a steering ram to support the steering gearbox. This reduces steering effort and increases control when running larger tires or off-road conditions.
Is welding required to install the PSC SK856 kit?
Yes. The cylinder mounting brackets require welding to the axle housing or steering components during installation.
Will this help steering with oversized tires?
Yes. PSC cylinder assist systems are designed specifically for trucks running larger tires, aftermarket axles, or locking differentials that place extra stress on the steering system.
Does this replace the factory steering gearbox?
Yes. The kit includes a PSC Big Bore XD steering gearbox that replaces the factory steering box while adding ports for the assist cylinder.
Will steering feel different after installation?
Drivers typically notice significantly reduced steering effort at low speeds and improved control in off-road conditions while maintaining stable highway steering.
