The ACL Race Series Main Bearing Set in STD Size is a high-performance crankshaft component designed for precision and durability. With the product code 5M8309H-STD, this set is part of the Race Series line from ACL, a trusted brand known for its quality and innovation in the automotive industry.

This main bearing set is specifically designed for engines with overwidth flanges in the thrust #5 position. The set includes main bearings with overwidth flanges for various undersizes, ranging from standard to 0.75mm overwidth.

Constructed from ACL's Race Series Tri-Metal material, these main bearings are engineered for maximum performance and reliability. The set includes bearings for positions 1, 3, and 2, 4, with standard shaft diameters of 2.3616" to 2.3622" (59.984mm to 60.000mm) and housing bores of 2.5197" to 2.5205" (64.000mm to 64.020mm).

ACL Race Series has a long history of manufacturing precision engine bearings in Launceston, Tasmania, Australia, and has been a leading OEM supplier to the automotive industry for over 70 years. Their products are trusted by engine builders worldwide for their robust metallurgy, quality, and performance.

With a strong pedigree in motorsport, the ACL RACE Series Performance Engine Bearings are the first choice for discerning engine builders in various racing disciplines. The company's range of performance engine bearings covers a wide variety of engine applications and continues to expand to meet the demands of new engine releases.

ACL holds internationally recognized certifications for quality management, environmental management, and occupational health and safety management, ensuring that their products meet the highest standards of excellence. Choose ACL Race Series Main Bearing Set in STD Size for unmatched performance and reliability in your engine build.