King Engine Bearings MB5661XPSTDX pMax Black Trimetal Race Main Bearing Set

The King Engine Bearings MB5661XP STDX is a high-performance standard size main bearing set engineered for Audi and Volkswagen engines using codes ADZ, AWT, APK, BHP, BPY, and AKS. Built to exceed OEM standards, this set is part of King's renowned pMax Black race bearing lineup, designed for performance street, track, and competition applications.

Key Features:

• pMax Black Series — King's premium trimetal race bearing construction featuring a black polymer overlay for superior load capacity and wear resistance
• Trimetal Construction — Three-layer design consisting of a steel backing, copper-lead or aluminum alloy intermediate layer, and a performance overlay for optimal strength and conformability
• Standard Size (STDX) — Direct OEM replacement sizing with enhanced performance characteristics; no crankshaft machining required for standard fitment
• High Eccentricity Design — Optimized oil film distribution for improved lubrication under high RPM and high load conditions
• Race-Grade Durability — Engineered to handle the elevated temperatures, pressures, and RPM demands of modified and high-performance engines
• Precision Manufactured — Tight tolerances ensure consistent crush, oil clearance, and bearing surface contact for reliable long-term performance

King Engine Bearings is a globally recognized manufacturer trusted by professional motorsport teams and performance engine builders. The pMax Black trimetal bearing series represents their top-tier offering for applications where standard OEM bearings are insufficient. This main bearing set is a complete replacement for the engine's crankshaft main journals, compatible with Audi/VW engine codes ADZ, AWT, APK, BHP, BPY, and AKS.