The end caps for EXP hubs differ from conventional end caps only in their design. These end caps are compatible with all DT Swiss rear hubs featuring Ratchet Star pawl discs and Pawl 3 pawl freehub bodies.
The end caps for road bikes and MTBs differ, as road bike freehub bodies are wider. Boost and standard hubs require the same end cap. Boost hub shells are wider; conversion to Boost or vice versa is not possible.
Herstellerinformation: DT Swiss, Längfeldweg 101, 2504 Biel, Bern, Switzerland, https://www.dtswiss.com/