King Engine Bearings MB582XPSTDX XP Series Tri-Metal Main Bearing Set STD

The King Engine Bearings MB582XP STDX is a complete main bearing set engineered for Ford 2.0/2.3L 8-valve engines. Part of King's renowned XP Series, these bearings are purpose-built for high-performance and racing applications that demand superior load capacity, precise tolerances, and extended durability under extreme operating conditions.

The XP Series was developed specifically for performance engines running forged steel aftermarket crankshafts and generating high loads for extended periods. At its core is King's pMax Black tri-metal structure — a metallurgically enhanced copper-lead construction with nickel barrier and SecureBond adhesion technology. pMax Black is 24% harder than conventional tri-metal race bearings, making it an ideal choice for circle track, off-road, off-shore, and other high-load, long-duration racing disciplines.

XP Series Construction:

• Enhanced tri-metal copper-lead construction with nickel barrier
• SecureBond adhesion process for superior stability between top and intermediate layers
• 0.0005" metallurgically enhanced and hardened performance overlay for superior fatigue resistance
• 15%–30% greater load capacity than traditional bearings
• Mains are half-grooved for uncompromised lower shell load capacity

Key Features:

• Bull's Eye Tolerance: Tightest wall tolerances in the industry — all shells matched to 0.0001"
• Increased Bearing Height: Improves bearing-to-bore contact and heat transfer, reducing spin potential at high RPM
• Improved Oiling: Enlarged, chamfered oil holes on main bearings for enhanced lubrication flow
• Medium Eccentricity: Enables optimum load distribution and improved oiling characteristics
• Narrowed Design: Mains and rods narrowed to accommodate large-radius crankshafts
• Dowel Holes: Available with or without dowel holes to suit various engine configurations

King Engine Bearings offers the industry's widest selection of sizes and special clearance options, ensuring the right fit for even the most demanding performance builds. The MB582XPSTDX is supplied in standard (STD) sizing for a precise, race-ready fit.