Build your Polaris RZR Pro R for serious, reliable power with the EVP Head Stud Kit, a critical upgrade for high-performance, high-boost setups. Designed to prevent head lift and head gasket failure under extreme load, this kit delivers superior clamping force and torque consistency for long-term engine integrity. Whether you're dialing in for desert racing or aggressive trail riding, EVP’s ARP head studs provide the strength and alignment precision you need to push the limits with confidence. A must-have for riders chasing big horsepower without sacrificing engine reliability.
ARP 2000 Features:
- ARP 2000: Strength-tested to 220,000 psi.
- Made in the USA
- Constructed from forged and heat-treated ARP 2000 material
- Additional thread engagement compared to other studs
- Mimics OEM design with significantly improved overall strength and durability
CUSTOM-AGED 625+ Features:
- Strength-tested to a minimum of 260,000 psi.
- Made in the USA
- Custom-Aged 625+ super alloy has superior fatigue cycle life, tensile strength and toughness (comparison: typical 8470 chromoly stud is roughly 170,000 psi.)
- thread-rolled after heat treating to provide optimum fatigue strength
- Additional thread engagement compared to other studs
- Mimics OEM design with significantly improved overall strength and durability
