ACL Bearings 5M1728-STD Standard Main Bearing Set

The ACL Bearings 5M1728-STD is a standard size main bearing set designed to deliver exceptional durability and performance for engine rebuilds and high-performance applications. ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world. This complete main bearing set provides reliable crankshaft support with precision engineering and advanced metallurgy.

Key Features:

• Trimetal construction with unique combination of materials enhances strength and fatigue resistance
• Hardened steel backs improve support for the bearing lining and enhance retention within the housing
• Manufactured to exacting tolerances with particular attention paid to wall thickness accuracy to ensure reliable fit and maintain consistent clearances
• Elimination of flash plating on the back of the bearings improves heat transfer and maximizes grip between the bearings and housing
• Increased eccentricity to improve shape adaptation to compensate for bore distortion at high speed operation
• Increased crush factor enhances bearing retention, ensuring stability during operation

Based in Launceston, Tasmania, Australia, ACL has been in the business for more than 70 years and maintains ISO-certified manufacturing processes. Whether you're performing a stock rebuild or building for high-performance applications, ACL main bearings provide the reliability and precision required for demanding engine builds.