A direct engagement system was developed to increase drive rigidity. Compared to the conventional Pawl Ratchet structure, the contact area is increased, and ratchets are more firmly fitted to each other while being driven due to the spiral shape. These have led to a substantial improvement of drive rigidity.
Furthermore, we have succeeded in reducing the weight of the entire hub by making the freehub body and main components of the ratchet from aluminum.
We have succeeded in significantly improving drive rigidity by using a hub that incorporates a direct engagement system.