Different spokes Lengths and spokes Angle between the drive and brake side of the hub is one of the biggest weaknesses of wheels, as the flange distances are asymmetrical to the hub center.

Our EFS system (Equal Flange System) has symmetrical flange spacings and therefore also allows symmetrical spoke angles. Since the same spoke length is used on both flange sides, exactly the same spoke tension can be generated on both sides. As a result, this leads to an extremely stable and physically optimal impeller.
The new V2 version of the EFS features improved sealing on the freewheel body and axle caps. In addition, a redesign of the freewheel and ratchet ring has resulted in a significantly longer service life. In addition, we offer the freewheel (item no. 40369) and axle (40368) in a steel version for the V2 variant in order to offer optimum durability in these areas as well.

The hub can be converted to 157 mm using the adapter set (item number 40377).