2015 racing 3 wheels are ideal for both racing and for everyday training differentiated rim heights 24mm at front for optimal manoeuvrability 30mm at rear for optimal power transfer oversized hub body in aluminiumpainted whitegives strong lateral stiffness while reducing weight fulcrum 21 spoke ratio on rear wheeldouble the number of spokes on the drive side for greater wheel stability and improved power transfer in the rear wheel 16 straight pull aero spokes on front wheel21 on rea