What is the difference between CC DB and CC DB OEM?
Why is the CC DB more expensive than CC DB OEM? See for example,
Rohloff SPEEDHUB 500/14 gear hub 2014
The CC DB hub has a quick release axle with disc brake rotor mounts, and comes with a torque arm to index to the frame as well as a chain tensioner to take up chain slack.
The CC DB OEM hub is the same, but comes with the OEM axle plate instead of a torque arm to index to the frame and no chain tensioner.
The price difference is because of the extra cost of the torque arm and chain tensioner.
Rohloff's site has a good explanation of the model codes:
Please let us know if you have any other questions.