ACL Bearings 6B1387P-30 Performance Connecting Rod Bearing Set .030 Undersize

The ACL Bearings 6B1387P-30 is a high-performance connecting rod bearing set designed for 6-cylinder engines with reground crankshafts. This Race Series bearing set features .030" undersize dimensions, specifically engineered for crankshafts that have been ground .030" undersize from their original specifications.

Key Features:

• Tri-metal construction with hardened steel backing for superior strength and durability
• Advanced metallurgy designed for high-performance and racing applications
• Hardened steel backs improve bearing lining support and assist with bearing retention in the housing
• Enhanced thermal transfer properties for more effective heat dissipation
• Precision-engineered to maintain proper oil clearances in high-load conditions
• .030" undersize for reground crankshaft journals
• Complete bearing set for 6-cylinder engine rebuild

ACL Race Series bearings are recognized throughout the motorsports industry for their race-tested durability and state-of-the-art engineering. These performance bearings feature improved bearing retention through higher radial contact pressure, which locks the bearing into the housing and provides more effective heat dissipation. The unique combination of design, metallurgy, and precision manufacturing provides Race Series bearings with the endurance and capability to perform in demanding applications where standard bearings cannot.