Be it smooth tarmac, gravel grinding, or whatever else we're throwing down, the Rival 12-Speed Crankset can handle it. X-Range gearing technology means we're always going to be settled into the correct gear, and we'll be seeing more range and a smoother gear progression, too. SRAM utilizes polished aluminum crankarms in lengths varying from 160- to 175-millimeters, and that construction makes for a lighter weight, plus strength and stiffness. The DUB bottom bracket system not only adds durability, but also simplicity to our ride, and near-universal frame compatibility. The rings are available in 46/33t and 48/35t options where we'll notice a 13-tooth gap between the small and big rings for crisp and reliable quick-shifting that'll always feel smooth as butter.