King Engine Bearings MB4058XP Main Bearing Set for Nissan VQ35DE 24V

The King Engine Bearings MB4058XP is a high-performance main bearing set specifically designed for the Nissan VQ35DE 24-valve engine. This XP Series bearing set features advanced tri-metal construction engineered to withstand extreme loads in demanding racing applications.

pMax Black Tri-Metal Technology:

The XP Series features King Racing's proprietary pMax Black tri-metal structure, which is 24% harder than conventional tri-metal race bearings. This enhanced construction combines a copper-lead alloy with a nickel barrier and a hardened performance overlay, delivering superior load capacity and durability. The SecureBond adhesion process ensures exceptional stability between layers, preventing delamination under extreme conditions.

Key Performance Features:

• 15-30% Greater Load Capacity: Engineered to handle extreme loads from high-performance and racing applications
• Enhanced Overlay: 0.0005" metallurgically hardened overlay resists surface fatigue and withstands higher loads
• Bulls Eye Tolerance: Industry-leading wall thickness tolerances with all shells matched to 0.0001"
• Half-Grooved Mains: Designed for uncompromised lower shell load capacity and optimized oil distribution
• Enlarged Chamfered Oil Holes: Improved oiling for better lubrication under high RPM conditions
• Medium Eccentricity: Optimizes load distribution across the bearing surface
• Narrowed Design: Compatible with large-radius crankshafts commonly used in performance builds

Ideal Applications:

The XP Series is specifically developed for high-load, long-duration racing applications including circle track, off-road, and endurance racing that utilize forged steel aftermarket crankshafts. These bearings are engineered to handle the sustained extreme loads and high RPMs generated by competition engines.

Designed for serious racing applications where bearing failure is not an option, the MB4058XP delivers the performance and reliability demanded by professional engine builders and racers.