Updated: 08/03/2021. Explanation of all the important facts related to bicycle front derailleurs. A separate article explains the front derailleur compatibility. Contents: 1. How does the front derailleur work? 2. FD mounting to the bicycle frame …2.1. Direct mount system known as H0, or DM …2.2. E-type (also known as low direct mount, E2-type, S3, … Read more
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