Clevite MS-1560AL-.25MM High Performance Main Bearing Set

The Clevite MS-1560AL-.25MM is a high-performance engine crankshaft main bearing set engineered for demanding automotive applications. This precision-machined bearing set features advanced TriMetal construction that provides exceptional durability and wear resistance under extreme operating conditions.

Key Features:

• Advanced TriMetal bearing construction with optimized overlay thickness to prevent fatigue
• High crush design ensures maximum bearing retention in the housing
• Strategically designed oil grooving for optimal lubrication balance between film strength and connecting rod oil supply
• Enlarged chamfers provide increased crankshaft fillet clearance
• Manufactured without flash plating for improved bearing seating
• -.25MM undersize for use with reground crankshafts

Engineering Excellence:

Clevite main bearings utilize optimized groove geometry based on extensive performance testing. The upper shells feature a 180-degree groove design that provides superior oil delivery to connecting rod bearings while maintaining maximum oil film thickness in the loaded lower shells. This configuration delivers the best balance of lubrication, load capacity, and bearing longevity in high-performance engines.

Applications:

Ideal for performance street engines, racing applications, and engine rebuilds requiring undersize bearings. The -.25MM dimension compensates for crankshaft journals that have been ground .25 millimeters undersize during reconditioning. Suitable for medium to high RPM operation where reliable lubrication and superior bearing retention are critical.

Clevite engine bearings are trusted by professional engine builders and racers worldwide for their consistent quality, precise tolerances, and proven performance under the most demanding conditions.