ACL Bearings 5M2152+015-020 Performance Main Bearing Set

The ACL Bearings 5M2152+015-020 is a specialized main bearing set designed for Ford Pinto, BDA, BDB, and Lotus Twin Cam engines with crankshafts ground .020" undersize and blocks that have been line bored .015" oversize. This precise sizing combination is essential for properly machined performance engine rebuilds where both the crankshaft journals and main bearing housing have been modified.

Key Features:

• ACL Race Series bearings are recognized as a premier brand throughout motorsports, used in race engines that have set records and won championships
• Advanced engineering with improvements in material composition, dynamic thickness, heat conduction, oil grooves, and oil distribution
• Hardened steel backing improves bearing lining support and assists with bearing retention in the housing
• Flash plating eliminated on bearing backs to improve heat transfer and maximize grip between bearing and housing
• Tight, consistent wall tolerances help maintain proper bearing clearances
• Manufactured from F780 tri-metal bearing material for superior strength and durability

ACL premium bearings provide special coating processes that help prevent premature bearing failures and expensive engine damage, with Race Series bearings designed for extreme endurance under harsh racing conditions. These bearings are ideal for high-performance Ford four-cylinder engine builds requiring precision-matched components.