Abuja BMW bike dealer kind of
 

There is a BMW dealer in Abuja that provides the bikes for the cops. It is not a regular bike dealer and they really aren't keen on getting involved with non-cop bikes, but I was able to buy an air filter and oil filter from them. I suspect that if you were in dire need they might be able to help because they do have BMW bike mechs. Even if you don't have a BMW they have a sign saying that they take no responsibility for work done by mechs. in private deals with customers, so you might be able to arrange for help from a mech outside of work hours.

Here is location:
9° 3'4.53"N
7°28'45.16"E