Mavic yksion pro powerlink road tyre the yksion pro powerlink is designed to speed the bike up optimized for rear wheel use its compound supple nylon casing reinforcement and tread pattern are specifically designed to increase rolling efficiency making it one of the fastest tyres around features super low rolling resistance speed optimized tread design nylon breaker high casing density 127tpi weight 190g 23mm 210g 270gbuymavic wheels tyresfrom chain reaction cycles the worlds l