Clevite MS-685C-60 High Performance Engine Main Bearing Set

The Clevite MS-685C-60 is a high-performance main bearing set engineered to provide optimal oil film thickness and bearing longevity in demanding engine applications. This set features advanced bearing design with strategic groove placement to maximize lubrication efficiency while maintaining the critical oil film that separates bearings from the crankshaft surface.

Engineering & Design:

• 180-degree upper shell grooving provides optimal oil delivery to connecting rods while preserving oil film integrity
• Ungrooved lower shells maximize load-carrying capacity and bearing life in high-stress areas
• Tri-Metal construction delivers superior strength and durability
• High crush design ensures maximum bearing retention under extreme conditions
• Reduced overlay thickness prevents overlay fatigue and "hen tracking"
• Enlarged chamfers provide increased crankshaft fillet clearance

Available Series Options:

This bearing is available in multiple performance series to match specific engine requirements. P-Series bearings offer maximum eccentricity and full-groove options for extreme RPM applications with hardened steel backs. H-Series bearings feature medium eccentricity with .001" extra clearance options (HX suffix), ideal for NASCAR-style racing and engines with oversized crankshaft fillets. K-Series TriArmor bearings include proprietary moly/graphite surface treatment with PTFE carrier material for superior start-up and high-load protection. V-Series bearings utilize lead-indium overlay for enhanced conformability. M-Series Micro bearings feature .006" thick babbitt lining for maximum conformability in engines experiencing severe crankshaft deflection.

Performance Benefits:

• Optimized oil film pressure reduces bearing stress and power loss
• No-flash plating construction ensures proper bearing seating
• Hardened steel backing provides exceptional strength against fretting
• Select-fit capability with extra clearance options for precision builds

Ideal for high-performance street engines, competition applications, and race engines operating in medium to high RPM ranges. Professional engine builders should select bearing series based on crankshaft specifications, RPM range, and bearing contact pattern requirements.