King Engine Bearings MB5382XPGSTDX XP Series Main Bearing Set Subaru - EJ20/EJ22/EJ25

The King Engine Bearings MB5382XPGSTDX is a high-performance main bearing set engineered specifically for Subaru EJ20, EJ22, and EJ25 engines, including turbocharged applications. Part of King's advanced XP Series, these bearings deliver exceptional durability for racing and high-performance builds using forged steel aftermarket crankshafts.

XP Series Performance Technology:

The XP Series features pMax Black tri-metal construction that is 24% harder than conventional tri-metal race bearings, providing 15-30% greater load capacity than traditional bearings. This enhanced copper-lead alloy construction includes a nickel barrier layer and SecureBond adhesion technology for superior stability between bearing layers. The 0.0005-inch metallurgically enhanced and hardened performance overlay withstands extreme loads and resists surface fatigue during extended high-RPM operation.

Key Features:

• Bulls Eye Tolerance: Industry-leading wall tolerances with all shells matched to 0.0001 inch for precise fitment
• Half-Grooved Main Design: Lower shells feature uncompromised load capacity for maximum durability
• Enlarged Chamfered Oil Holes: Improved oil delivery for enhanced lubrication under extreme conditions
• Medium Eccentricity: Optimized load distribution and superior oiling characteristics
• Narrowed Design: Accommodates large-radius crankshafts common in performance applications
• SecureBond Technology: Unique adhesion process prevents delamination between bearing layers

Applications:

Ideal for high-load, long-duration racing applications including circle track, off-road, rally, and drag racing where extended periods of extreme stress are encountered. Designed specifically for use with forged steel aftermarket crankshafts in performance Subaru boxer engine builds.

Standard size bearing set includes all main bearings required for complete engine assembly.