HCR Racing introduced its OEM-replacement suspension-arm kit for the Polaris RZR S 900 in late 2014. Designed for owners who wanted stronger, higher-clearance suspension components without converting the 60-inch-wide trail machine into a long-travel build, the kit retained the RZR’s factory width and mounting locations.
The arms used HCR Racing’s slot-and-tab boxed construction with CNC-machined 4130 chromoly components. Each arm was hand TIG-welded and shaped to provide more ground clearance around rocks, ruts and other trail obstacles.
HCR RZR S 900 A-Arm Features
- OEM-replacement design that retained the RZR S 900’s stock width
- Laser-cut components for consistent fit and finish
- CNC-machined 4130 chromoly components
- High-clearance boxed-arm construction
- Hand TIG-welded assembly
- Reused the factory ball joints
- Worked with stock or compatible aftermarket shocks and axles
- Bolt-on installation using the factory chassis mounting points
- Extended the wheelbase by two inches for greater stability and additional tire clearance
Stronger Suspension Without Added Width
The defining feature of this kit was its OEM-replacement configuration. Rather than increasing track width like a traditional long-travel system, HCR strengthened the suspension and improved ground clearance while preserving the compact dimensions that made the RZR S 900 attractive to trail riders.
HCR also extended the wheelbase by two inches. That change was intended to improve stability and create more room for larger tires while retaining the machine’s stock overall width.
2015 King of the Hammers UTV Race
Tested on Our King of the Hammers RZR S 900
We installed this HCR Racing stock-geometry A-arm kit on our 2015 King of the Hammers Polaris RZR S 900 build. The race machine was created to demonstrate what the then-new 60-inch RZR could accomplish in Johnson Valley’s combination of high-speed desert terrain and extreme rock trails.
The HCR arms added strength and ground clearance without changing the RZR’s basic suspension layout or increasing its width. That made them a natural fit for a build intended to preserve the RZR S 900’s maneuverability in narrow rock canyons.
The completed machine survived the approximately 127-mile 2015 King of the Hammers UTV race and finished third in the Pro UTV class. Only five of more than 50 starters reached the finish, providing a demanding real-world test of the HCR suspension components and the rest of the build.
The original 2015 Polaris RZR S 900 combined a 75-horsepower ProStar 900 engine with a 60-inch stance, 12.25 inches of front-wheel travel and 13.2 inches at the rear.
Fitment and Availability
This article documents a product originally announced for the 2015-generation Polaris RZR S 900. Because suspension specifications, vehicle fitment and product availability can change, owners should confirm the exact model year and required supporting components before ordering used or remaining inventory.
Visit HCR Racing for information about its current UTV suspension systems.
