They mostly come with cdn stock (save for a couple of models) but offer cdx as an upgrade and in fact recommend it for different conditions. Costs just 65 dollars. Still ridiculously cheap when you consider that here in India we drop 3-4K easily on an 11-12 speed chain.
Note, not only the belt but atleast rear sprocket needs to be upgraded to CDX type as well to use the upgrade potential more. The front sprocket of CDN lineup holds up good, AFAIK. To get full potential better to do go for complete CDX system (Front + Rear sprockets + Belt) instead of just belt.
I came to know from a hardcore Dutch cyclist Willem's commuter bike related blog articles here and here
Last edited by carthick1000 : 26th March 2021 at 16:49.