The ACL Race Series Main Bearing Set in STD size is the perfect choice for performance engine builders looking for quality, precision, and durability. With a product code of 5M1959H-STB, this set is designed for use in crankshafts and includes bearings for positions 1, 2, 3, 4, and 5.

Made from the high-quality Race Series (Tri-Metal) material, these bearings have a standard shaft diameter of 2.1646"/2.1654" (54.980mm/55.000mm) and a maximum wall thickness of 0.0788" (2.002mm). The housing bore is 2.3228"/2.3236" (59.000mm/59.020mm) and the maximum length is 0.7870" (20.000mm). The set also includes Thrust Washers (1T1957-STD) for added performance and protection.

ACL Race Series has a long history of manufacturing precision engine bearings in Launceston, Tasmania, Australia. With over 70 years of experience, ACL is a trusted OEM supplier to the automotive industry and offers a wide range of replacement products for the global aftermarket.

The company has a strong presence in motorsport, with a pedigree that dates back to the 1960s. ACL Race Series bearings have been used in Formula 1, Australian Supercars Championship, drag racing, speedway, drifting, and rally events, making them the top choice for engine builders worldwide.

With a commitment to quality, innovation, and performance, ACL continues to expand its range of performance engine bearings to cover new engine releases. The company holds ISO certifications for Quality Management, Environmental Management, and Occupational Health & Safety Management, ensuring that every product meets the highest standards of excellence.

Choose ACL Race Series Main Bearing Set for your next engine build and experience the difference that quality, precision, and performance can make.