King Bearings Main Bearings Thrust Pos 5 Aluminum Series Subaru WRX 2002-2014 | WRX STI 2004-2019 | Many EJ Series

The Aluminum based bearings from King are typically used for an engine being rebuilt to stock configuration and mostly stock power levels. It's a great bearing for embeddability and wear resistance but not as high of a load capacity needed for true high performance setups.