ACL Bearings 5M540P-30 Performance Main Bearing Set Undersize - 030

The ACL Bearings 5M540P-30 is a precision-engineered main bearing set designed for performance and high-duty engine applications. This set features a .030" undersize dimension for use with reground crankshafts, providing proper clearances for rebuilt engines.

Construction and Materials:

• Tri-metal construction with steel backing for superior strength and durability
• Cast copper-lead lining layer to withstand high loads and engine stresses
• Electroplated overlay on bearing surface for excellent anti-seizure properties
• Hardened steel backs improve support and bearing retention in the housing

Performance Features:

• Enhanced crush factor for improved bearing retention during operation
• Tight wall tolerances to maintain consistent bearing clearances
• No flash plating on bearing backs for improved heat transfer
• Designed for heavy-duty, motorsports, and street performance applications

Application:

This bearing set is engineered for engines requiring .030" undersize main bearings when crankshaft journals have been machined undersize during rebuild. ACL bearings are manufactured to ISO-certified standards and feature advanced metallurgy proven in professional motorsports worldwide.

Sold as a complete main bearing set with all positions included for full engine rebuild.