The ACL Race Series Connecting Rod Bearing Set in STD Size (4B1856H-ST) is the perfect choice for high-performance engines. Made from Race Series (Tri-Metal) material, these bearings are designed to withstand the rigors of racing and high-performance driving.

With a standard shaft diameter of 1.7713"/1.7717" (44.992mm/45.000mm), these bearings are suitable for all positions in the engine. The oil clearance is TBA, while the maximum wall thickness is 0.0587" (1.492mm). The housing bore size is 1.8898"/1.8907" (48.000mm/48.024mm), and the maximum length is 0.6300" (16.000mm).

ACL has been a trusted manufacturer of precision engine bearings for over 70 years, with a strong reputation for quality, innovation, and performance. The ACL Race Series Performance Engine Bearings have a rich history in motorsport, dating back to the 1960s when they were used in Formula 1 racing.

The ACL Race Series Performance Engine Bearing range includes over 200 applications for a wide range of performance engines from various manufacturers. Whether you have an Australian, American, Japanese, Korean, or European vehicle, ACL has the bearings you need for optimal performance.

With a focus on precision and quality, ACL's ISO-certified manufacturing processes ensure that every bearing meets the highest standards. When you choose ACL Race Series Connecting Rod Bearings, you can trust that you're getting a reliable and high-performance product that will stand up to the demands of racing and performance driving.