DT SWISS 240 Ratchet EXP 36, With the latest generation of 240 hubs, its strength has been further strengthened. The latest Ratchet EXP ratchet system extends the life of the bushing by increasing the bushing spacing. The new version of the side cover simplifies tool-free disassembly and makes maintenance easier. The hollow-shaped 36T planetary gear can directly convert the output energy into acceleration kinetic energy.