Excellent performance: The floating system design can reduce the deformation of the bicycle rotor at high temperature and reduce the heat transfer to the center. CNC precision machining, high hardness, good wear resistance, excellent dry and wet behavior, fast ventilation, good heat dissipation, for excellent braking performance. Reduce heat transfer: the Inner and outer frames of the rotor are made of two different metal materials which are connected by rivets. On the other hand, flexible connections with a certain degree of freedom simultaneously reduce heat transfer and solve the problem of internal stresses. Good wear resistance, toughness, corrosion resistance, tensile strength and resistance to deformation. Good braking performance: Do you want to get real and strong braking performance when driving actively downhill or on winding roads. Then our 180mm brake discs fully meet your requirements. Before buying, please make sure the rotor hole spacing is 44mm. Strong, thin and light: The bicycle brake disc is made of aerospace aluminum alloy 7075- High quality T6 and 420 stainless steel, which has good hardness and toughness. Colorful and beautiful design, nice and cool, anodized, corrosion resistant.