King Subaru XPG main and rod bearings are produced at the company’s AS9100 aerospace certified production facility and features the company’s new custom designed packaging with specially molded trays that securely hold each shell and prevent contact. Each bearing features ultra precise wall tolerances: All XPG shells are produced to0.0001” Bull’s Eye® wall accuracy and feature King’s 0.0005″ metallurgically enhanced and hardened XP performance overlay.