Pro R Rear Knuckle Set
The ZRP RZR Pro R / Turbo R Rear Knuckle Set is a race-engineered suspension upgrade designed to eliminate the instability and alignment deflection caused by the factory cast rear knuckles. As the Polaris Pro R platform continues to push SXS racing to new limits, the OEM rear knuckle simply cannot keep up with the vehicle’s size, weight, and race-pace speeds.
Factory rear knuckles rely on cast construction and rubber-stabilized radial joints that flex under load. This flex causes unwanted alignment changes throughout suspension travel, leading to unpredictable handling and rear-end instability at speed. ZRP solves this issue with precision CNC-machined 7075 billet aluminum rear knuckles paired with massive FK uniball bearings, delivering unmatched rigidity and consistent alignment.
By replacing rubber joints with 7/8″ and 1″ FK uniballs, these rear knuckles lock your suspension geometry exactly where you set it. The result is a more planted rear end, predictable handling, and the confidence to stay on the throttle when it matters most.
🏁 Key Features
- Eliminates OEM rear knuckle flex and alignment deflection
- Keeps rear suspension geometry stable at high speeds
- Dramatically improves rear-end predictability and control
- Designed for racing, desert, and aggressive trail use
- Classic ZRP billet styling and finish
🛠️ Construction & Materials
- Material: Premium 7075 billet aluminum
-
Bearings:
- 7/8″ FK Uniballs
- 1″ FK Uniballs
- Misalignment Spacers: Stainless steel
- Manufacturing: Precision CNC machined
- Origin: Made in the USA
📦 What’s Included
- (2) ZRP Billet Rear Knuckles (Left & Right)
- Pre-installed FK uniballs
- Stainless steel misalignment spacers
🚙 Fitment
- 2022+ Polaris RZR Pro R
- 2022+ Polaris RZR Turbo R
- Rear suspension application
- Direct bolt-on replacement
🔧 Installation Notes
- 100% bolt-on installation
- No cutting or fabrication required
- Professional alignment recommended after installation
Designed, Tested & Made in the USA
Every ZRP rear knuckle is designed, tested, and manufactured in the USA using real-world racing data. If you’re pushing your Pro R or Turbo R at race pace, this upgrade is mandatory for stability, durability, and driver confidence.
