ACL Bearings 4B1780HX-STD Race Series Performance Connecting Rod Bearings

The ACL Race Series 4B1780HX-STD connecting rod bearings are engineered for high-performance and racing applications where durability and precision are critical. These bearings feature ACL's advanced Race Series construction designed to withstand extreme loads, high RPM operation, and elevated temperatures found in modified and competition engines.

Key Features:

• Race Series construction for maximum durability under extreme conditions
• Standard size (STD) for stock crankshaft journals
• Premium tri-metal construction with hardened steel backing
• Specialized high-performance bearing material optimized for racing applications
• Enhanced oil clearance design for improved lubrication flow
• Increased crush for superior retention and heat transfer
• Precision machined to tight tolerances for consistent performance

ACL Race Series bearings are the choice of professional engine builders and racers worldwide, offering reliability and performance when it matters most. The HX designation indicates ACL's high-performance material composition specifically formulated for race engines that demand maximum protection against wear and fatigue.