SRAM FORCE E1 165x50/37 DM DUB NoBB BLACK (P)All new, stunning thread on rings allow riders to tune their chainring combinations for their riding needs, as well as replace rings as needed X Range gearing keeps cadence changes during a front shift to the minimum, maximizing the ability to put power down One piece 2x chainring results in a lighter weight, stiffer, more durable crankset 46 33T, 48 35T or 50 37T chainring combinations available DUB bottom bracket adds durability and simplicity Crisp