External bearings with Euro alu bottom bracket cups. Much bigger and stronger bearings than in standard Euro BB cups. Two inner sleeves for 68mm and 73mm bottom bracket shells and a set of alu spacers included. Two different types for 19mm and 22mm axles.
This BB set with 19mm diameter is dedicated for Keipo eX cranks. Using with standard Keipo cranks is possible only after replacing the spindle with longer one (148mm);
This BB set with 22mm diameter is dedicated for Thorn MTB cranks which are equipped with 160mm long spindle.