My Martas give me a little squealing now and again, I think its built up dust and crud (I don't ride in the mud) caked aroung the caliper pistons, not letting the pads fully retract. Not easy to get to- I tried with a toothbrush thru the narrow slot opening but it wasn't too effective. Anybody found a better way to clean?
Mtbr's 2016 Winter Biking GearReviews and Roundups
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