I have a set of 10 speed Vuelta wheels. They sell an 11 speed upgrade kit for a reasonable price. I was thinking about buying it to upgrade my old wheels for back ups. They have no documentation on what is needed to install. I emailed them directly and asked for instructions before deciding to purchase and they replied:
Thanks for writing.
If you have not performed any major service or repair on your bicycle, it is highly recommended that you have it serviced by your local bike shop where they have the tools and experience to perform the installation or upgrade correctly.
While your wheels are being upgraded, this would also be the perfect time to have your local bike shop inspect and service the rest of your bike so that all components and systems are adjusted and ready to perform as expected the next time you ride.
This should answer your question.
WTF...that doesn't answer my question. Anyone know what tools are required to do the hub upgrade?