Clevite MS-1041P-10 Performance Main Bearing Set

The Clevite 77 MS-1041P-10 is a high-performance main bearing set featuring P-Series design characteristics optimized for demanding racing and performance applications. This bearing set is engineered to provide maximum oil flow to connecting rod bearings while maintaining exceptional retention and durability under extreme conditions.

P-Series Design Features:

• Full groove design in main bearings to maximize oil flow to rod bearings
• High crush construction for maximum retention in the bore
• Reduced overlay thickness to prevent overlay fatigue and hen tracking
• Hardened steel back construction for added strength and fretting resistance
• Tri-Metal bearing construction with lead-tin-copper overlay
• Higher eccentricity design to narrow bearing contact patterns

Optimal Applications:

• High RPM racing engines experiencing severe rod bore close-in
• Applications requiring increased oil delivery to connecting rod bearings
• Engines where rod bearing oil starvation has been identified
• Competition engines requiring maximum bearing retention

P-Series bearings represent Clevite's original high-performance bearing design, refined over decades of racing experience. The full groove configuration in these main bearings ensures connecting rods receive adequate lubrication even under extreme conditions. The 180-degree groove in the upper shell provides the optimal balance between oil film thickness and oil supply to downstream bearings, as proven through extensive performance testing.

These bearings are manufactured without flash plating for improved seating characteristics and feature enlarged chamfers for clearance with larger crankshaft fillets common in performance applications. The reduced overlay thickness prevents the overlay fatigue that can occur under high-load racing conditions, while the hardened steel backing provides structural integrity against the intense forces generated in competition engines.

Technical Specifications:

• Series: P-Series (Performance)
• Groove Configuration: Full groove upper shell (180 degrees)
• Overlay: Thin lead-tin-copper for durability
• Back Material: Hardened steel
• Crush: High for maximum retention
• Eccentricity: High for optimized contact patterns

This main bearing set is ideal for engine builders who have diagnosed rod bearing oil starvation issues or who are building engines for extremely high RPM applications where conventional bearings show excessive wear patterns from parting line to parting line contact.