I have a thin 28.6 mm frame on mybike and the only front derailleurs that I can find to fit my frame are SRAM x7 and Shimano Deore. Better Shimano and SRAM groups do not come with this additional ring that makes it fit thin frame (at least not where I come from). Originaly on my bike there was a Deore front der. and it newer worked well. Will SRAM X7 be better choice?
Mtbr's 2016 Winter Biking GearReviews and Roundups
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Thread: SRAM X7 or DEORE