King Engine Bearings CR4604XPC STDX XPC Race Connecting Rod Bearing Set Ford 2.3L Duratec Mazda L3-VDT MZR Turbo

The King Engine Bearings CR4604XPC STDX is a high-performance connecting rod bearing set designed for the Ford 2.3L Duratec and Mazda L3-VDT MZR Turbo engines. Part of King's XPC Series, this set combines the proven tri-metal pMaxBlack™ race bearing construction with King's advanced pMaxKote™ nano-composite polymer coating for maximum protection in demanding performance and racing applications.

Key Features:

• XPC Series pMaxKote™ Coating: A factory-applied nano-composite polymer coating applied over the pMaxBlack™ overlay as part of the bearing manufacturing process — adds no wall thickness and does not alter precision oil clearances
• Four-Layer Construction: Ceramic nano-composite particles function as a fourth layer, providing superior wear resistance and protection against oil starvation and cavitation
• pMaxBlack™ Tri-Metal Overlay: Proprietary surface-hardened lead-tin-copper electroplated overlay that is 24% harder than conventional tri-metal race bearings, with fatigue strength to handle loads up to 10,200 psi
• STDX Size: Standard extra-clearance sizing — ideal for builders dialing in specific oil clearances; can be paired with a STD half bearing to fine-tune clearance
• Race-Proven Performance: Engineered for circle track, drag racing, and other high-load applications utilizing steel crankshafts
• No Dowel Pin Hole: Narrow bearing design for compatibility with performance rod applications

King's XPC Series bearings are manufactured entirely in-house — from raw material through polymer coating and sorting — ensuring the tightest wall thickness tolerances and most consistent clearances available in a performance rod bearing set.