King Engine Bearings MB7776GPCSTDX Main Bearing Set BMW N55 N53 N52 STDX GPC Coated

The King Engine Bearings MB7776GPCSTDX is a high-performance main bearing set specifically engineered for BMW N55B30A, N53B30A, and N52B30A engines. This racing-grade bearing set features King's premium GPC (polymer-coated) tri-metal construction capable of withstanding extreme loads up to 17,000 PSI, making it ideal for diesel performance and sprint car applications.

Advanced GPC Construction:

The GPC material features an intermediate lead-bronze layer over steel, topped by a silver overlay containing solid lubricant particles, with a factory-applied polymer coating that protects bearings during oil starvation and metal-to-metal contact scenarios. Unlike conventional coatings, King's factory-applied polymer coating maintains the original wall thickness for precise clearances.

STDX Sizing for Precision Clearance:

The STDX designation provides an extra 0.026mm clearance on standard crankshafts, and STDX shells can be mixed with STD shells to achieve exact clearances. This flexibility allows engine builders to fine-tune bearing clearances for optimal performance and protection.

Key Features:

• 7-pair main bearing set for BMW N55/N53/N52 3.0L engines
• GPC silver-based tri-metal construction with polymer coating
• 17,000 PSI load capacity for extreme applications
• STDX sizing provides 0.026mm additional oil clearance
• Factory-applied coating maintains original wall thickness
• Superior protection against oil starvation
• Ideal for high-performance street, track, and racing applications

King Engine Bearings has specialized exclusively in engine bearings since 1960, utilizing advanced materials, stringent manufacturing standards, and extensive R&D testing to deliver race-proven reliability. Whether building a high-horsepower BMW for competition or demanding street use, these GPC-coated main bearings provide the durability and load capacity required for extreme performance applications.