Bottom bracket conversion kit for 3 piece square taper spindle cranks made by YST. Convert your one piece crank to three piece with this spindle/bottom bracket.
Spindle is for JIS (Japanese) square taper cranks - this will NOT fit Campagnolo square taper or Haro Group 1 square taper cranks from the mid-80's.
Size: American Bottom Bracket (51.5mm diameter cups, 127mm long spindle)
Spindle Diameter: 17mm
SEALED CARTRIDGE BEARINGS - aluminum alloy cups and lock rings.
All parts shown are included.