ACL Bearings 6B1387P-40 Performance Connecting Rod Bearing Set Undersize - 0.40mm

ACL Race Series performance engine bearings are recognized as a premier brand throughout the motorsports world, delivering exceptional durability and performance for high-demand applications. This connecting rod bearing set features ACL's advanced tri-metal construction designed to withstand extreme operating conditions.

Key Features:

• Tri-metal copper-lead material to suit every performance requirement
• Improved bearing retention from higher radial contact pressure that locks the bearing into the housing
• More effective heat dissipation through improved thermal transfer
• High strength overlay plate with reduced thickness for superior strength and durability
• Hardened steel backs provide robust support ensuring longevity
• Tight wall tolerances guarantee consistent performance and reliability
• 0.40mm undersize for precision crankshaft grinding applications

ACL bearings are used for tuning and engine upgrades where you want better quality with higher bearing capacity than normal standard bearings. Improvements of material, dynamic thickness, heat conduction, oil grooves and oil distribution are some of the points that make ACL one of the leading bearing manufacturers. This 6-cylinder connecting rod bearing set is ideal for engine rebuilds requiring undersize bearings due to crankshaft machining.