The brand-new series FE 400 KA has been developed and designed specifically for bike-applications. The spring-preload is now integrated into the cage-design: The cage-spring system! This patent pending design combines highest torque capacity in minimized space with highest reliability. At the same time, the weight of the freewheel clutch is noticeably reduced due to the less number of sprags.

The FER 400 series has been specifically developed for use in bicycle applications. The freewheel clutch already includes an integrated roller bearing, allowing for space-saving design solutions.

GMN insert elements are available in many different standard dimensions. The established and approved series. FE 400 Z and FE 400 BZ are equipped with a classical tension-spring and transmit highest torque in smallest space. The specific sprag design provides an integrated overload protection.