Main Stud Kit - Polaris 900cc/1000cc RZR

The Main Stud Kit for Polaris 900cc/1000cc RZR is a critical engine fastening assembly designed for high-performance off-road vehicles that demand reliability under extreme stress. Built for both stock and modified engines, this kit replaces the factory main studs with superior chromoly hardware that resists fatigue, stretching, and failure during aggressive driving, high RPM operation, and heavy load scenarios. RZR owners who push their machines to the limit—whether on the trail, at the track, or in competition—rely on this upgrade to maintain engine block integrity and prevent catastrophic failures.

This kit features chromoly construction with black oxide finish, delivering superior tensile strength and corrosion resistance compared to standard steel fasteners. The 12-point nut design ensures secure, even clamping pressure across the two-bolt main configuration, preventing uneven loading that can compromise engine block longevity. Chromoly's higher yield strength allows these studs to maintain clamping force under thermal cycling and vibration, protecting main bearing journals from micro-movement and wear. The black oxide coating adds durability and protects against oxidation in wet or dusty trail environments typical of RZR operation.

This Main Stud Kit is essential for 2014–2020 Polaris RZR 900cc and 1000cc models, particularly those with engine modifications, increased boost, or frequent high-RPM use. Installation requires basic engine work and torque specifications should follow manufacturer guidance to ensure proper clamping load. Weighing 2.1 lbs, the complete kit is compact and ready for drop-in replacement, making it ideal for both professional shops and experienced DIY builders preparing their RZR for demanding terrain and extended performance.