Home » Bottom Brackets » Press Fit Bottom Brackets » bop24r PRESS-FIT BOTTOM BRACKETS BOP24R 3 in 1 Integrated BB Reducer (BB30+PF30+OSBB) Available for Shell I.D of BB30 (42mm), Press -Fit 30 (46mm) and OSBB (O.D. 46mm/Width 61mm) Convert Above BB to SRAM Technical Diagram