ACL Bearings 4B583P-10 Performance Connecting Rod Bearing Set

The ACL Bearings 4B583P-10 is a high-performance connecting rod bearing set engineered for demanding 4-cylinder engine applications. Part of ACL's renowned Race Series lineup, these bearings feature advanced trimetal construction with a high-strength overlay plate and hardened steel backing to deliver exceptional durability under high RPM and increased load conditions.

Key Features:

• Trimetal design with reduced overlay thickness for improved fatigue resistance
• Hardened steel backs improve bearing lining support and retention in the housing
• Elimination of flash plating on bearing backs for enhanced heat transfer and maximum grip
• Increased eccentricity to compensate for bore distortion at high RPM and assist in hydrodynamic oil film formation
• Tight, consistent wall tolerances help maintain precise clearances
• Enlarged ID chamfers accommodate large fillet radii on performance crankshafts

ACL Race Series bearings are proven components in championship-winning engines across motorsports disciplines, from drift racing to drag racing. These bearings combine precision engineering with race-tested metallurgy to perform where standard bearings cannot, making them ideal for high-performance street builds, racing applications, and engine rebuilds that demand reliability under extreme conditions.