I think it is a roit to read people bash Tektro and then say how much better Shimano is. WAKE UP. Tektro makes the brakes for Shimano. And for those that don't the CF brakes in question are the same that Cannondale specs on the SystemSIX....having ridden that bike I can tell you those brakes work just as well as DA or Record.
The lower end Tektros do suffer from crappy pads...but the fix is put in KoolStops...which they do for you in the upper level parts.
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