Clevite MS-2056A Engine Crankshaft Main Bearing Set

The Clevite MS-2056A is a precision-engineered crankshaft main bearing set designed for high-performance and racing applications. This bearing set features advanced TriMetal construction that provides exceptional strength, durability, and wear resistance under extreme operating conditions.

Key Features:

• TriMetal bearing construction with optimized overlay thickness to prevent fatigue and hen tracking
• High crush design ensures maximum bearing retention in the housing
• Strategic upper shell grooving provides optimal oil delivery to connecting rod bearings
• Hardened steel backing for superior strength and resistance to fretting
• Enlarged chamfers for improved crankshaft fillet clearance
• Non-flash plated for better seating and contact with the housing

Engineering Design:

Clevite main bearings utilize a 180-degree groove in the upper shell to supply oil to connecting rod bearings while maintaining maximum oil film thickness in the loaded lower shell. This design provides the best balance between adequate rod oiling and optimal bearing performance. The ungrooved lower shell allows the crankshaft to develop a thicker oil film, increasing the safety margin and extending bearing life.

Performance Applications:

This bearing set is ideal for medium to high RPM engines in racing, marine, and other performance applications. The optimized eccentricity provides proper contact patterns covering 2/3 to 3/4 of the bearing surface. The thin overlay construction resists fatigue under high loads and sustained high-speed operation.

Compatibility Note:

Designed for use with precision-ground crankshafts. Extra clearance options may be available for select fitting applications. Always verify proper bearing clearances during installation and inspect regularly in competition use.