- Familiarity: I've put it through the wringer
These things start frizzing almost immediately -- one took a couple months, the other literally started the moment i installed it -- and they soon start looking like shaggy mammals. Terrible for appearance. Then the polymer startts bunching up in clumps and interrupting your shifting. Shimano acknowledges the cosmetic issue, but claims it does not affect performance. I beg to differ.
This is the worst cycling product i have purchased in years.