King Engine Bearings CR4597XPSTDX XP-Series pMax Black Connecting Rod Bearing Set Volkswagen 1781cc Turbo & 1984cc

The King Engine Bearings CR4597XP STDX is an XP-Series pMax Black connecting rod bearing set engineered for Volkswagen 1781cc turbocharged and 1984cc engines. Designed for high-performance and race applications, this set delivers the advanced metallurgical and geometric technologies required to handle extreme loads and high-RPM operation.

pMax Black XP-Series Technology:

• Tri-metal construction — unique layered structure purpose-built for race and high-performance applications
• Nano-scaled hardening process — proprietary overlay treatment that modifies the molecular structure, creating a black fatigue-resistant shield for superior load capacity
• STDX sizing — slightly extra clearance over standard for improved oil film in performance builds
• Narrowed crank-cheek side profile with increased crush height for improved bearing-to-bore contact, better heat transfer, and reduced spin potential at high RPM
• Wall thickness tolerances of ±0.0001 in. — tighter than industry standard for precise fitment and consistent performance
• Optimized eccentricity derived from elasto-hydrodynamic analysis and dynamic load calculations
• Optimized crush height achieved through a performance-specific engineering process

This set includes 4 pairs of connecting rod bearings, providing a complete set for a 4-cylinder engine. King Engine Bearings has specialized in precision engine bearings since 1960, supplying the motorsport and performance aftermarket with bearings trusted in demanding builds worldwide.