ACL Bearings

ACL Race Series: A Legacy Built on Precision and Performance

When championship-winning engine builders reach for bearings, they often reach for ACL. ACL Race Series has earned a premier reputation throughout the motorsports world, with rod and main bearings serving as standard components in race engines that have set records from Bonneville to Mexico — spanning sport compact drift racing, small-block NASCAR, IHRA, and NHRA competitions. That kind of pedigree doesn't happen by accident; it's the result of more than a half-century of race bearing design, metallurgy, and manufacturing experience.

Engineering That Goes Beyond the Ordinary

What separates ACL from the competition is a relentless focus on metallurgy and precision manufacturing. ACL bearings feature tri-metal construction with high-strength overlay plating, optimized oil clearances, and increased eccentricity designed to compensate for bore distortion at high RPM and assist in the formation of hydrodynamic oil films. Flash plating is eliminated from the back of the bearings to maximize heat transfer and improve retention in the housing. The result is a bearing that delivers reliable lubrication and consistent performance even under the most extreme conditions — whether you're running forced induction, high compression, or naturally aspirated power.

ACL's coverage spans American, Asian, and European performance engines, making them a go-to choice for enthusiasts and professional builders alike. Their comprehensive engine bearing kits bring that same racing DNA to complete bottom-end rebuilds, pairing precision-matched engine connecting rod bearings and engine crankshaft main bearings together for a cohesive, high-performance build.

A Complete Bottom-End Solution

ACL's product lineup extends beyond bearings alone. Their engine connecting rods are engineered to complement ACL bearings in demanding build applications, while their oil pumps round out the bottom-end package for select engines. Together, these components form a tightly integrated system designed to keep oil flowing, loads distributed, and power reaching the wheels.

Whether you're building a street-driven performance machine, a weekend track car, or a full-on race engine, ACL Race Series delivers the endurance and capability that serious builders demand. The brand's commitment to micron-level tolerances and innovative bearing design has made it a trusted name among professional racers and weekend warriors for decades.