The FSA Premium Bottom Brackets are meticulously designed to meet the demanding needs of today’s riders. Precision CNC products and high-quality bearings are the key points of the brand new Premium Series, developed to reach better customer service and the highest level of performance. High-quality bearings for minimum friction and maximum durability. Precision CNC manufacturing. Spindle Interface Type: BB30/PF30. BB Shell Width (mm): 68. Bottom Bracket Shell I.D.: 46mm. BB/Frame Interface: PF30. Weight: 80.