The ACL Race Series Main Bearing Set in STD size is designed for high performance applications with an extra 0.001" of oil clearance for optimal lubrication. Made from ACL's Race Series Tri-Metal material, these main bearings are suitable for positions 1 through 5 on the crankshaft.

With a standard shaft diameter of 2.1646" to 2.1654" (54.980mm to 55.000mm) and a maximum wall thickness of 0.0783" (1.989mm), these bearings provide durability and reliability under extreme conditions. The housing bore size ranges from 2.3228" to 2.3236" (59.000mm to 59.020mm) with a maximum length of 0.7870" (20.000mm).

Included in this set are thrust washers (1T1957-STD) to ensure proper axial loading on the crankshaft. The ACL Race Series Main Bearing Set is the perfect choice for engine builders looking for high-quality performance bearings.

ACL has a long history of excellence in manufacturing precision engine bearings, with a strong presence in the OEM and aftermarket automotive industry. Their Race Series Performance Engine Bearings have a reputation for robust metallurgy, precision, and performance, making them a top choice for motorsport applications.

With a wide range of engine applications covered, including Australian, American, Japanese, Korean, and European engines, ACL continues to expand their product offerings to meet the needs of modern engine builders. Backed by ISO certifications for quality, environmental management, and occupational health and safety, you can trust in the quality and reliability of ACL products.

Choose ACL Race Series Main Bearing Set in STD size for your high performance engine build and experience the difference in quality and performance that ACL is known for.