SMALL BASE + LARGE BRAKE FRONT CAP + LARGE FRONT BRAKE + STD CAP REPLACEMENT + 100mm REFLEX + STD INTERNAL REFLEX BRAKE. BBG - NF#2 - O15SUGESTED CALIBERSelectADDED LENGTH (mm):SelectOVERALL LENGTH (mm):SelectDIAMETER (mm):50WEIGHT (g):SelectCOMPONENTS SelectTHREADM12 X 1 M13 X 1 M14 X 1 M16 X 1 M18 X 1 & IMPERIAL