King Engine Bearings MB7790XP XP Series Main Bearing Set

The King Engine Bearings MB7790XP is a high-performance main bearing set from the XP Series, engineered for extreme racing applications and high-load engine builds. This bearing set features King's advanced pMax Black tri-metal construction, delivering superior durability and load capacity for demanding performance environments.

Key Features:

• Enhanced tri-metal copper lead construction with nickel barrier and SecureBond adhesion for superior stability
• pMax Black overlay structure that is 24% harder than conventional tri-metal race bearings
• Industry-leading "Bull's Eye" tolerance with wall thickness held to ±0.0001 inch
• Enlarged, chamfered oil holes for improved oiling and reduced friction
• Narrowed design for large-radius forged steel crankshafts
• 0.0005 inch metallurgically enhanced and hardened performance overlay
• 15-30% greater load capacity than traditional bearings
• Half-grooved design for uncompromised lower shell load capacity

The XP Series was specifically developed for high-load, long-duration racing applications including circle track, off-road, and other extreme conditions that utilize forged steel aftermarket crankshafts. King's advanced metallurgical and geometric technologies deliver consistent, reliable performance under the most demanding conditions.