Jipe I get it now. You just don’t like Shimano. I’m sure you have your reasons. Here in Istanbul they have very good customer service, very, very wide service network, products availability, good prices and Shimano service center mechanics (mine is too) know what they are doing. So I see no reason why to look for alternatives.

I didn’t come across any official SRAM service centers or found they parts widely available. Only few things here and there probably imported by individual companies. I’m pretty sure they are not present here officially.