Sram Crankset Rival D1 Dub 48/35 165Mm 2X12 00.6118.614.000Features X Range gearing technology This gives you a wider gear range and smoother gear progression, so you're always in the right gear, whether you're climbing a steep hill or hammering a descent. Crisp and accurate front shifts SRAM's Yaw shifting technology ensures that you get precise and reliable front shifts, even under load. DUB bottom bracket This adds durability, simplicity, and broad compatibility to your drivetrain. The DUB spindle is wider