5-Main Bearing Set

The Summit Racing SUM-172000 main bearings are designed for engine rebuilding and performance applications. Constructed from a durable bi-metal, silicon aluminum material, these bearings offer robust performance and longevity. This set includes five bearings, featuring a 1/2 groove style and an upper groove location for optimal oil distribution. The thrust bearing is stock size, ensuring compatibility with standard setups. These bearings are specifically noted for use with Small Block Chevrolet (SBC) engines, as indicated by part number references alongside SBC engine builds. To ensure proper installation and performance, it is recommended to consult engine-building guides for precise measurement of main bearing clearances, which involves installing all five bearings and torquing the main caps to specification. These bearings are part of Summit Racing's engine components line, known for providing essential parts for engine overhauls and upgrades.