Clevite MS-1060P-20 P-Series High Performance Main Bearing Set

The Clevite MS-1060P-20 is a high-performance main bearing set from the legendary P-Series line, engineered for demanding racing and performance engine applications. These main bearings feature full 360-degree grooving in both upper and lower shells to maximize oil flow to connecting rod bearings, making them ideal for engines requiring maximum lubrication under extreme conditions.

P-Series Performance Design:

• Maximum eccentricity design for engines experiencing severe rod bore close-in at high RPM
• High crush construction for superior bearing retention and stability
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Full groove design maximizes oil delivery to rod bearings, preventing oil starvation
• Hardened steel back construction for added strength and fretting resistance
• Ideal for applications showing rod bearing polishing, smearing, or discoloration at axial center

Engineering Excellence:

Clevite's proven TriMetal bearing construction combines a hardened steel backing with a high-strength aluminum alloy intermediate layer and a lead-tin-copper overlay. The P-Series represents Clevite's oldest and most proven high-performance bearing line, developed specifically for extreme racing applications where bearing reliability is critical. The full groove design ensures connecting rods receive adequate oil flow even under the most demanding operating conditions.

Application:

Use P-Series main bearings where higher eccentricity is desired to narrow bearing contact patterns and provide increased oiling to rod bearings. These bearings are specifically designed for engines running extremely high RPMs that cause severe rod bore distortion, typically indicated by nearly full parting line to parting line shaft contact with standard bearings.