Clevite MS-2218H High Performance Engine Crankshaft Main Bearing Set

The Clevite MS-2218H is a high-performance main bearing set designed for competition and racing engines. Part of Clevite's H-Series lineup, this bearing set features advanced engineering optimized for medium to high RPM applications including NASCAR-style racing and other demanding motorsports environments.

H-Series Design Features:

• Medium eccentricity for optimal contact patterns covering 2/3 to 3/4 of bearing surface
• High crush design for maximum bearing retention
• Hardened steel back construction for added strength and fretting resistance
• Thin overlay to prevent overlay fatigue and hen tracking
• Enlarged chamfers providing greater crankshaft fillet clearance
• No flash plating for improved bearing seating
• Standard 180-degree upper half grooving for efficient connecting rod oil delivery

Advanced Bearing Technology:

This main bearing set utilizes Clevite's proven TriMetal construction, engineered to maintain critical oil film separation between bearing and shaft surfaces. The 180-degree groove design in the upper main shell provides optimal oil distribution to connecting rods while preserving the thicker oil film in the lower shell where loads are highest. This configuration delivers superior bearing life and increased safety margins compared to older full-grooved designs.

Applications:

H-Series bearings are recommended for engines with oversize crankshaft fillets operating in medium to high RPM ranges. They're ideal when standard bearings produce contact patterns that are too narrow, and serve as the recommended starting point when selecting performance bearings for the first time. Use this bearing set when optimal balance between oil flow, load capacity, and bearing longevity is required.

Clevite H-Series bearings represent decades of bearing development and racing experience, delivering professional-grade performance for serious engine builders and racers.