King Engine Bearings CR4365XP Connecting Rod Bearing Set XP Series pMax Black Trimetal

The King Engine Bearings CR4365XP is a high-performance XP-Series connecting rod bearing set engineered for the Ford Zetec S and EcoBoost 1.6 engine. Built for racers and serious performance builders, this set features King's signature pMax Black tri-metal construction — the most advanced race bearing material in King's lineup.

pMax Black Tri-Metal Technology:

• Three-layer construction — copper-lead intermediate layer, nickel barrier, and a proprietary lead/tin/copper Babbitt overlay over a hardened steel backing
• Nano-scale surface hardening — a special molecular treatment creates a fatigue-resistant shield that inhibits crack formation under extreme load
• 24% greater hardness than conventional tri-metal race bearing overlays, delivering a load capacity up to 17% higher than competing race bearings
• Overlay load capacity rated to handle up to 10,200 psi

XP-Series Geometric Features:

• Bull's Eye Tolerance — wall thickness matched to an industry-leading ±0.0001" for exceptional precision and consistent oil clearance
• Increased bearing height — improves bore contact, enhances heat transfer, and reduces the risk of bearing spin at high RPM
• Medium eccentricity profile — optimizes load distribution and promotes stable hydrodynamic oiling across the full bearing surface
• SecureBond adhesion process — ensures superior stability and bonding between the intermediate and overlay layers

Application & Design Intent:

• Designed for high-load, extended-duration performance applications including road racing, track days, and forced-induction builds
• Intended for use with forged steel aftermarket crankshafts
• Standard (STD) sizing — confirm journal dimensions before ordering

King Engine Bearings has specialized exclusively in engine bearings since 1960, applying lessons from motorsport to produce the most precise and durable bearings available for both race and performance street applications. The CR4365XP is the correct choice when stock or standard-performance bearings are not sufficient for your power goals.