Per an email from a DT Swiss tech representative, the steel freehub body comes with an extra dust cap over the right side bearing that makes it compatible with the older Hugi FR hubs. This dust cap isn't compatible with the 240 hub, so it should be pried off when using this freehub on the 240.
Good quality, but it does not fit the 240s hub. When assembling it onto the hub the end cap touches the inside bearing shield and puts too much presure for the wheel to turn.