King Engine Bearings MB5722SM0.25 Main Bearing Set Mitsubishi 4B11T Turbo EVO X 0.25mm Undersize

The King Engine Bearings MB5722SM0.25 is a complete main bearing set engineered for the Mitsubishi 4B11T turbocharged engine found in the Lancer Evolution X (2007 and newer). This set is manufactured in a bimetal construction using strengthened aluminum, providing excellent durability and load capacity suited for both street and high-performance applications.

King Engine Bearings is a globally recognized OEM and performance bearing supplier, known for precision manufacturing and tight tolerances. Their SM-series bearings are specifically designed to handle the elevated cylinder pressures and thermal demands of turbocharged engines, making them a popular choice for Evo X builds ranging from mild rebuilds to full competition engines.

Key Features:

• Application: Mitsubishi 4B11T Turbocharged Engine — Lancer Evolution X (2007 and later)
• Construction: Bimetal design with strengthened aluminum alloy overlay for superior fatigue resistance
• Size: 0.25mm undersize (for use with journals machined 0.25mm undersize)
• Series: SM (Standard Material) — optimized for high-load and boosted applications
• Precision manufactured to tight tolerances for proper oil clearance and reliable crank support
• Suitable for performance rebuilds and OEM-style replacements on the 4B11T platform

This is a complete main bearing set for a full engine rebuild. Always verify crankshaft journal dimensions and confirm undersize specification before ordering to ensure proper fit and oil clearance.