on an MTB the problems of using a 9t driver would start to become apparent
Who's using 9t drivers on MTBs? Only really needed with the little wheels on children's bikes. With micro chainrings of 25-28t, a 26" bike only needs sprockets which fit a standard cassette spline.
Who's using 9t drivers on MTBs? Only really needed with the little wheels on children's bikes. With micro chainrings of 25-28t, a 26" bike only needs sprockets which fit a standard cassette spline.