opona bmx khe mac3 20 x 2 40 ridehubAfter nearly two years of work on the next generation of KHE MAC3 tires, the manufacturer has created an exceptionally light, yet durable design , ideal for street, park and flatland riding. Standard BMX tires have a single ply cotton casing onto which the tread is vulcanized. The KHE MAC3 is a revolution a double ply casing made of Kevlar threads , which are not only stronger but also lighter than traditional cotton reinforcements. The result is one