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We asked “Mr. Derailleur” Michael Sweatman—the founder and curator of the world’s pre-eminent rear gear-changer museum—to tell us about his favorite...
Mike Sweatman might know more about the rear gear changer than anyone
New 1x11 drivetrain performs on any terrain
Get acquainted with your derailleur for easier repairs and smoother shifts
VIDEO: Get smoother shifting with this at-home repair.

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