Clevite MS-909A-10 Main Bearing Set

The Clevite 77 MS-909A-10 is a precision-engineered main bearing set designed for high-performance and racing applications. This bearing set features advanced TriMetal construction that provides exceptional strength, durability, and wear resistance under extreme loads and operating conditions.

Key Features:

• TriMetal bearing construction with steel backing for maximum strength
• Optimized groove design for proper oil film development and lubrication
• High crush design for superior retention in performance applications
• Reduced overlay thickness to prevent overlay fatigue
• Engineered to support connecting rod oil delivery while maintaining bearing integrity
• Upper shell features 180-degree grooving for optimal oil distribution
• Lower shells are ungrooved to maximize oil film thickness and bearing life

Performance Technology:

Clevite main bearings utilize advanced bearing grooving technology based on extensive performance testing. The upper main shells feature a 180-degree groove that effectively supplies oil to the connecting rods while maintaining optimal oil film pressure. The lower main shells remain ungrooved, allowing for a thicker oil film that provides greater safety margins and improved bearing life under high-load conditions.

Application:

This main bearing set is ideal for performance engines, racing applications, and engine rebuilds where reliability and durability are critical. The bearing design balances oil delivery requirements with the need for robust hydrodynamic lubrication, making it suitable for engines operating across a wide RPM range.

Clevite 77 bearings are manufactured to exacting tolerances and are trusted by professional engine builders and racers worldwide. Each bearing set is precision-machined to ensure proper fit, crush, and clearances for reliable engine operation.