Clevite MS-2207A-.75MM High Performance Engine Crankshaft Main Bearing Set

The Clevite MS-2207A-.75MM is a high-performance engine crankshaft main bearing set designed for demanding automotive applications. This precision-engineered bearing set features Clevite's proven tri-metal construction with optimized grooving for superior performance and durability.

Advanced Bearing Design:

Clevite's engineering research has demonstrated that a 180-degree groove in the upper main shell provides the best overall performance for high-output engines. This design maintains optimal oil film thickness while efficiently supplying oil to connecting rod bearings. The upper shells feature this proven grooving pattern, while lower shells remain ungrooved to maximize oil film development and bearing life under high loads.

Key Features:

• Tri-metal construction for superior strength and durability
• Optimized 180-degree upper shell grooving for ideal oil distribution
• Ungrooved lower shells maximize oil film thickness under load
• High crush design ensures maximum bearing retention
• Reduced overlay thickness prevents overlay fatigue
• Enlarged chamfers provide increased crankshaft fillet clearance
• Manufactured without flash plating for improved seating
• 0.75mm undersize for precision fitting on reground crankshafts

Performance Advantages:

This bearing set is engineered to develop a hydrodynamic oil film that keeps bearing surfaces separated from the crankshaft during operation. The carefully designed grooving pattern ensures connecting rods receive adequate lubrication while maintaining the thickest possible oil film in high-load areas, providing an enhanced safety margin for performance engines.

Application Notes:

Ideal for medium to high RPM applications including performance street engines and competition builds. The enlarged chamfers accommodate crankshafts with oversize fillets. Contact patterns should ideally cover 2/3 to 3/4 of the bearing surface for optimal performance and longevity.

What's Included:

Complete main bearing set with upper and lower shells for all main journals.