SunRace BBS 15 Square Taper Bicycle Bottom Bracket Spindle – BBS15 Review Posted by Pelicandy August 26, 2018 in Drivetrain Components Sealed cartridge bearings with steel cups Square taper steel spindle 338g (113mm spindle) Square taper steel spindle. Sealed cartridge bearings with steel cups. 338g (113mm spindle) Random Products Profile Racing 104mm 4-bolt Spider Review Shimano Ultegra/XT CN-HG701 11-Speed Chain W/ Quic... CRANKSET FSA GOSSAMER 386EVO 175×50/34T w/oBB... Cycle Group PX-CT1300MIN-BK Promax 10mm x 1 Axle H... Cycling Outdoor Recreation Parts & Components Sports & Outdoors SunRace