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.
Using external Euro BB sets is possible for cranks with longer axle. Dartmoor cranks equipped with such axle are Keipo eX or Thorn MTB. It is also possible to upgrade regular Keipo cranks with longer axle (148mm).