Clevite MS-1716P-.25MM Performance Main Bearing Set

The Clevite MS-1716P-.25MM is a high-performance main bearing set featuring a -.25MM undersize dimension for precision fitment on reground crankshafts. This P-Series bearing set is engineered specifically for racing and high-performance engine applications where maximum oil flow and bearing retention are critical.

P-Series Performance Design:

• Full groove configuration in upper shells to maximize oil delivery to connecting rod bearings
• High crush design ensures maximum bearing retention under extreme conditions
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Hardened steel backing provides added strength and resistance to fretting
• Higher eccentricity design narrows bearing contact patterns for improved performance

Engineered Bearing Lubrication:

Clevite main bearings utilize proven 180-degree grooving in the upper shell to supply oil to connecting rods while maintaining optimal oil film thickness. The lower shells remain ungrooved to preserve the critical oil film that separates the bearing from the shaft surface, resulting in improved bearing life and greater safety margins under high-load conditions.

Applications:

P-Series main bearings are ideal for engines experiencing extreme RPM conditions that cause severe rod bore deformation. These bearings are the solution when rod bearing oil starvation occurs, typically indicated by polishing, smearing, or discoloration concentrated at the bearing's axial center. The full-groove design ensures adequate oil supply reaches the connecting rod bearings even under the most demanding racing conditions.

Clevite's legendary TriMetal construction combines durability with the performance characteristics needed for professional racing and serious enthusiast builds. These bearings are designed for engines that demand maximum reliability at sustained high RPM.