King Engine Bearings MB4104XPSTDX XP Series Main Bearing Set Nissan - VG30DE VG30DETT

King Engine Bearings MB4104XPSTDX is a high-performance XP Series main bearing set engineered specifically for Nissan VG30DE and VG30DETT engines. This tri-metal performance bearing set is designed for serious racing applications that demand exceptional load capacity and durability under extreme conditions.

XP Series Technology:

The XP Series represents King Racing's answer to the extreme demands of modern race engines. Developed for performance applications using forged steel aftermarket crankshafts, these bearings feature pMax Black tri-metal construction that is 24% harder than conventional tri-metal race bearings. This advanced metallurgical structure, combined with precision geometric features, delivers 15-30% greater load capacity than traditional bearings.

Key Performance Features:

• pMax Black Tri-Metal Construction: Enhanced copper-lead alloy with nickel barrier and SecureBond adhesion technology for superior layer stability
• Hardened Performance Overlay: 0.0005" metallurgically enhanced overlay resists surface fatigue and withstands extreme loads
• Bulls Eye Tolerance: Industry-leading wall thickness tolerance with all shells matched to 0.0001" for precise fitment
• Half-Grooved Main Design: Upper shells are grooved while lower shells remain ungrooved for maximum load capacity where needed most
• Optimized Geometry: Medium eccentricity for improved load distribution and enhanced oil flow
• Enlarged Chamfered Oil Holes: Improved lubrication delivery to critical bearing surfaces
• Increased Bearing Height: Better bearing-to-bore contact improves heat transfer and reduces spin potential at high RPM
• Narrowed Design: Accommodates large-radius crankshafts commonly found in performance builds

Ideal Applications:

This bearing set is engineered for high-load, long-duration racing including circle track, off-road, marine, and other motorsports applications that utilize steel crankshafts and operate under sustained high stress. The XP Series construction ensures reliability when conventional bearings would fail under extreme cylinder pressures and extended high-RPM operation.

What's Included:

Complete main bearing set for Nissan VG30DE and VG30DETT engines in standard size.