Clevite MS260P20 P-Series Main Bearing Set Undersize - 020

The Clevite MS260P20 is a P-Series main bearing set featuring .020 inch undersize dimensions for precision crankshaft fitting during engine rebuilds. As part of the Clevite 77 bearing family, this tri-metal main bearing set is engineered for high-revving engines and demanding performance applications.

Construction and Design:

• Tri-metal cast copper lead construction with steel backing for maximum strength
• Steel back provides structural support and bearing retention
• Cast copper lead lining designed to withstand high engine loads
• Electroplated babbitt overlay on running surface for superior wear characteristics
• High crush factor for maximum bearing retention in the housing bore
• Higher eccentricity design compensates for bore distortion under load

Performance Features:

• Engineered for high-revving engines with elevated load factors
• Superior conformability and embedability compared to bimetal bearings
• Enhanced fatigue resistance for extended service life
• Oil grooves extend around both halves on most applications for improved lubrication
• Reduced overlay thickness prevents fatigue in performance applications

Clevite P-Series bearings represent the original Clevite 77 performance bearing design, making them ideal for engine rebuilds where more demanding use is anticipated, including street performance, heavy-duty applications, and motorsports. The .020" undersize specification allows precise fitting to reground crankshafts.