King Engine Bearings MB5884XP High-Performance Main Bearing Set for McLaren M838T/M840T Engines

The King Engine Bearings MB5884XP is a high-performance racing main bearing set specifically designed for McLaren M838T and M840T engines, found in iconic models such as the 650S, 720S, MP4-12C, P1, and Senna. This complete main bearing set is engineered to deliver superior strength and durability for extreme performance applications.

XP Series pMaxBlack™ Technology:

• Tri-metal lead bronze construction with nano-scaled hardening process of Babbitt overlay that withstands 10,200 PSI load
• 29% increase in overlay hardness (18.1HV) and 24% increase in load capacity compared to conventional tri-metal bearings
• 5% copper content overlay strengthened by proprietary nano-scaled hardening process that creates a black fatigue-resistant shield
• SecureBond™ adhesion process for maximum structural integrity between layers

Performance Features:

• Bull's Eye Tolerance with all shells matched to 0.0001" for the closest wall tolerances in the industry
• Enlarged, chamfered oil holes for improved oiling
• Medium eccentricity enables optimum load distribution and improved oiling
• Half-grooved design for uncompromised lower shell load capacity

Ideal for circle track, drag racing, offshore, and other applications that utilize steel crankshafts. The XP Series is specifically developed for high-performance applications requiring sustained high loads and extended duration racing conditions.