The ACL Race Series Main Bearing Set in .25 Oversize is a high-performance crankshaft component designed for enthusiasts and racers looking for superior engine performance.

Constructed from ACL's Race Series Tri-Metal material, this main bearing set is known for its durability, precision, and reliability. With positions for 1, 2, 3, 4, and 5, this set is compatible with a wide range of engines.

The standard shaft diameter ranges from 1.9661" to 1.9668" (49.938mm to 49.956mm) with a maximum wall thickness of 0.0793" (2.013mm). The housing bore diameter is between 2.1259" to 2.1267" (53.998mm to 54.018mm) and the maximum length is 0.6940" (17.630mm).

This set includes thrust washers (1T8353-STD) and is designed to be used with a .25mm oversize crankshaft.

ACL has been a trusted manufacturer of precision engine bearings for over 70 years, with a reputation for quality, innovation, and performance. Their Race Series Performance Engine Bearings are used by top engine builders in various motorsport disciplines, making them the go-to choice for demanding applications.

With a commitment to excellence and continuous improvement, ACL's products are manufactured in Launceston, Tasmania, Australia, with a strong focus on quality control and environmental responsibility. This Main Bearing Set is just one example of ACL's dedication to providing top-notch engine components for the global aftermarket.