Clevite MS-2199HX High Performance Main Bearing Set

The Clevite MS-2199HX is a high-performance engine crankshaft main bearing set designed for demanding racing and competition applications. This H-Series bearing features advanced engineering to deliver optimal performance under extreme conditions.

H-Series Performance Features:

• Medium level of eccentricity for optimal load distribution and contact patterns
• High crush design ensures maximum bearing retention in the engine block
• Hardened steel backing provides superior strength and fatigue resistance
• Thin overlay construction prevents overlay fatigue and "hen tracking"
• Enlarged chamfers accommodate crankshafts with oversize fillets
• Non-flash plated for improved seating and bedding-in characteristics
• Standard 180-degree upper shell grooving optimizes oil film thickness while feeding connecting rod bearings
• HX suffix denotes 0.001" extra clearance for precision fitting and select fitment

Engineered for Racing Applications:

Originally developed for NASCAR competition, H-Series bearings excel in all types of performance engines operating in medium to high RPM ranges. The design philosophy focuses on maintaining optimal oil film thickness while ensuring adequate lubrication to rod bearings. The 180-degree groove configuration in the upper shell provides the best balance—supplying oil to connecting rods without compromising the critical oil film that separates bearing surfaces from the crankshaft.

When to Choose H-Series:

H-Series bearings are the ideal starting point for most performance engine builds. Use these bearings when working with crankshafts that have oversize fillets, or when P-Series bearings produce contact patterns that are too narrow. Optimal bearing contact should cover approximately two-thirds to three-quarters of the bearing surface. The extra clearance HX variant allows for precise clearance control and accommodates select fitting procedures common in professional engine building.

Built on Clevite's legendary TriMetal construction, these bearings combine a hardened steel back, aluminum-tin lining, and lead-tin-copper overlay to deliver the durability and reliability demanded by professional engine builders and racers worldwide.