The 104 bcd narrow wide oval single chainring from one up components is a narrow wide chainring designed to provide ultimate traction by smoothing out the torque you deliver to your rear tyre made from hard wearing 7075 t6 aluminium plate the narrow wide tooth profile eliminates chain drop with the perfect chain mesh fit and the aggressive crud chamfers for awesome mud shedding performance and extended ring life the chainring uses 12 percent ovality the 32t model equals 30 24t range and the