ACL Bearings 5M1777-STD Standard Size Main Bearing Set

The ACL Bearings 5M1777-STD is a standard size main bearing set engineered for high-performance and racing applications. ACL Race Series performance engine bearings are manufactured to exacting tolerances with precision measurement systems that ensure consistent wall thickness accuracy and reliable fit for maintaining proper clearances.

Key Features:

• Trimetal construction provides exceptional strength and fatigue resistance for demanding performance conditions
• Hardened steel backing improves bearing lining support and enhances retention within the housing
• No flash plating on bearing backs maximizes heat transfer and improves grip between bearing and housing
• Increased crush factor ensures optimal bearing retention and stability during operation
• Enlarged ID chamfers accommodate large fillet radii on performance crankshafts
• Standard size (-STD) for use with standard crankshaft journals

ACL Bearings has been manufacturing precision engine bearings for over 70 years and supplies components to major OEM manufacturers and motorsports teams worldwide. These bearings are designed to withstand high RPM conditions and extreme loads found in racing applications including drag racing, drifting, road racing, and endurance competition.