Home » Bottom Brackets » Cartridge Bottom Brackets » mp61 CARTRIDGE BOTTOM BRACKETS MP-61 SCM Hollow ISIS Drive Spindle Aluminum Alloy Cups and Sleeve Double-Row 14mm Sealed Bearings Length 68 x 108mm, 113mm, 118mm, 122mm and 128mm Length 73 x 108mm, 113mm, 118mm, 122mm and 128mm Weight: 265g Technical Diagram