Designed for everything (im)possible. Polished aluminum crank arms in various lengths and the DUB bottom bracket system ensure that the Rival crank always spins, no matter what happens. A close and consistent 13-tooth difference between the chainrings provides precise and reliable shifting. The wider spacing of the arms and chainrings also accommodates oversized tires, giving you the opportunity to explore new, more challenging trails. The longer DUB crankshaft fits both road bike and MTB frame bottom bracket standards for unmatched cross-compatibility across all brands.