DT Swiss Ratchet EXP Freehub Body Replacement or Upgrade The DT Swiss Ratchet EXP freehub bodies have a matte finish. These are available in two different versions, with this version coming with steel bearings for the DT Swiss 240 hub. Ratchet EXP freehub bodies have no seals themselves, as this sits on the hub shell. Features Steel bearings that are compatible with the 240 series hubs Comes with an end cap Compatible with Shimano Microspline cassettes DT Swiss part number: FW0016 | Dt Swiss | Ratchet Exp Freehub Body Micro Spline