Race technology for everyday riding Proprietary Shimano road tubeless rim construction Faster Smoother quiet & comfortable ride Phenomenal cornering grip with tubeless tires Tube & tubeless tire compatible Wide flange hub with offset rim for maximum rigidity & power transmission 20 rear stainless steel butted & bladed straight pull spokes with a 2-cross lacing pattern improve lateral & torsional &40;power transmission&41; rigidity Elbow-less spokes make for a strong yet compliant whee Angular contact bearings Rim wear indicator allows safe detection of worn rim 11/10-speed compatible Weight: 1037 grams