The ACL Race Series Conrod Bearing Set-Performance STD Size is a top-of-the-line product designed for high-performance engines. With a product code of 4B4390H-STD, this set is part of the brand's Race Series category, specifically for connecting rods.

Made from Race Series (Tri-Metal) material, these bearings are suitable for all positions in the engine. The standard shaft diameter ranges from 1.8496" to 1.8504" (46.980mm to 47.000mm) with a maximum wall thickness of 0.0592" (1.503mm). The housing bore measures 1.9695" to 1.9703" (50.025mm to 50.045mm) and the maximum length is 0.6400" (16.250mm). Oil clearance specifications are TBA.

ACL Race Series has a rich history of over 70 years in precision engine bearings manufacturing, with a strong presence in the OEM and aftermarket industries. Based in Launceston, Tasmania, Australia, ACL has built a global reputation for quality, innovation, and performance.

The Race Series Performance Engine Bearings have a solid foundation in motorsport, dating back to the 1960s with Brabham Formula 1. The brand has since been used in various racing disciplines like Australian Supercars Championship, drag racing, speedway, drifting, and rally. Engine builders worldwide trust ACL Race Series bearings for their high-quality metallurgy and precision.

The ACL RACE Series offers a wide range of performance engine bearings for different applications, covering Australian, American, Japanese, Korean, and European engines. The company's vertical integration allows for in-house tooling, product design, bearing manufacture, and quality control processes. ACL holds prestigious certifications for its Business Management Systems, ensuring the highest standards of quality, environmental responsibility, and occupational safety.