The ACL Race Series Main Bearing Set- Performance .25 Oversize is a top-of-the-line product designed to provide exceptional performance and durability for your crankshaft. With a product code of 5M1913H-.25, this bearing set is part of the prestigious ACL Race Series brand, known for its quality and precision in the automotive industry.

This particular main bearing set is designed with a single oil hole for optimal lubrication and cooling of your engine. Made from Race Series (Tri-Metal) material, this set includes bearings for positions 1, 2, 3, 4, and 5 on your crankshaft. The standard shaft diameter ranges from 2.1644" to 2.1654" (54.976mm to 55.000mm), with a maximum wall thickness of 0.0986" (2.504mm). The housing bore diameter measures 2.3622" to 2.3630" (60.000mm to 60.020mm), with a maximum length of 0.7870" (20.000mm). This set is a .25mm oversize to accommodate for engine modifications.

ACL Race Series has a long-standing reputation for producing high-quality engine bearings, with a history dating back over 70 years. Based in Launceston, Tasmania, Australia, ACL has supplied OEM parts to the automotive industry and offers an extensive range of replacement products for the aftermarket. The brand is known for its robust metallurgy, precision engineering, innovation, and superior performance.

With a strong presence in motorsport, ACL Race Series bearings have been used in prestigious racing events such as Formula 1, Australian Supercars Championship, drag racing, speedway, drifting, and rally. Engine builders worldwide trust ACL Race Series bearings for their reliability and performance in demanding conditions.

ACL Race Series offers a comprehensive range of performance engine bearings for various applications, covering Australian, American, Japanese, Korean, and European vehicles. The brand continues to expand its product offering to support new engine releases and advancements in the automotive industry.

Backed by ISO certifications for quality management, environmental management, and occupational health and safety, ACL Race Series sets the standard for excellence in engine bearing manufacturing. Trust ACL Race Series Main Bearing Set-Performance .25 Oversize to provide reliable performance and durability for your engine.