Precise Exact Actuation ratio that offers the widest range of adjustment coupled with a precise geometry to create market leading 10 speed performance. Exact Actuation replaces the slop and variation found in normal rear derailleurs with a system that features an identical 3mm adjustment between each gear in the 10 speed shifting range. Consistent, precise adjustment means smoother, faster, and better shifting with no variation in pull effort from gear to gear.
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