ACL Bearings 4B1408P-STD Performance Connecting Rod Bearing Set Standard Size

The ACL Bearings 4B1408P-STD is a high-performance connecting rod bearing set designed for demanding engine applications. Part of the acclaimed ACL Race Series, these tri-metal bearings are engineered to withstand higher RPM conditions and provide superior durability in performance and racing environments.

Key Features:

• High-strength steel backing with increased tensile strength for improved bearing retention and support
• High-strength overlay plate with reduced thickness for enhanced fatigue properties
• Increased crush design improves bearing retention through higher radial contact pressure and enhances heat dissipation
• Increased eccentricity compensates for bore distortion at high RPM and assists in forming hydrodynamic oil films
• No flash plating on bearing backs to maximize heat transfer and improve grip between bearing and housing
• Hardened steel backs on all rod bearings for superior bearing lining support
• Tri-metal construction combining precision design, advanced metallurgy, and performance engineering

ACL Race Series bearings are recognized throughout the motorsports world and have been proven in championship-winning engines across multiple racing disciplines, from sport compact drift racing to NASCAR, IHRA, and NHRA competition. Standard size (STD) bearings are designed for use with standard crankshaft journals. These bearings deliver the endurance and capability required for high-performance applications where conventional bearings cannot perform.