ACL Bearings Race Series Performance Connecting Rod

ACL Bearings Race Series performance connecting rod bearings (rod bearings) are built for high-RPM, high-load engines in street performance, drag, circuit and other competition builds. Race Series bearings are a well-known choice in motorsport engine building. They combine tri-metal construction with race-focused design details to help protect the crankshaft journals and keep oil films stable under extreme conditions.

Key Features:

• Tri-metal construction with a high-strength overlay plate. The overlay is made thinner to improve fatigue resistance.
• Hardened steel backs support the bearing lining and help keep the bearing seated in the housing.
• Increased crush improves bearing retention under high load.
• No flash plating on the back improves heat transfer. It also increases grip between the bearing and its housing.
• Increased eccentricity compensates for bore distortion at high RPM. It also helps form hydrodynamic oil films.
• Tight, consistent wall tolerances help you hold accurate clearances.
• Enlarged ID chamfers on applicable parts fit the larger fillet radii found on performance crankshafts.

Race Series bearings have a dark, tarnished look. This comes from the copper in the electroplated overlay and does not affect how the bearing works. It is normal for this series and differs from the light grey look of standard tri-metal bearings.

The line covers many popular 4, 6 and 8 cylinder engine applications, with options for different bearing sizes and oil clearance requirements. Pick the part number that matches your engine and crankshaft specifications. These bearings suit engine builders who want durability, wear resistance and consistent performance in a rebuild or performance upgrade.