*This hub fits Polaris Turbo S, XP Turbo, RS1 and XP 1000. it does NOT fit Pro-XP
The ZRP chromoly hubs are the best option for ultimate strength and durability. These were designed with offroad racing in mind from the start. We use heat treated 4140 to provide a balance of toughness and rigidity. They are zinc plated for corrosion protection. We have redesigned the way the rotor mount to make rotor changes throughout the race season much easier and preserve to wheel studs and hubs mounts. Each hub comes with 17-4 wheel studs installed and 4 ultra-high strenght bolts to mount the rotor with. 
Heat Treated 4140 Contstruction
CNC Milled in-house
Zinc Plated
Designed for easy rotor changes
Includes 17-4 Wheel Studs ($260 value)
*This hub fits Polaris Turbo S, XP Turbo, RS1 and XP 1000. it does NOT fit Pro-XP