Galfers Standard Wave rotors are engineered to provide the best performance. Every aspect of design, from the materials and manufacturing processes to the extensive testing, has been carefully chosen to produce the best quality stainless steel rotor available. The Standard Wave rotor provides premium performance both on the street and at the track, and its influence in the industry can be seen in all the designs that try to copy its look. These rotors were invented by Galfer in the early 90s to solve the problem of water and mud on brake rotor surfaces of trial competition motorcycles. As the design was developed an added benefit was discovered: the brake system was running cooler. The combination of the new design with the premium materials that had already been developed for the round rotors resulted in the new generation of brake rotor technology. These rotors are made of Galfers unique high carbon 420 SS/8 composite. The rotors are laser cut and not stamped like most other rotors. Double disc ensures parallel grinding to assure perfect parallel flatness. Patented inner and outer Wave design minimizes heat transfer, equalizes dissipation and evens out pad wear. The rotors are heat-treated to each specific application to assure warp resistance. The designs are CAD-CAM and tested with a stress analysis program, as well as dyno/real life tested prior to being offered on the market. KBA and TUV approved. Galfer Wave rotors are protected under US PTO# 6, 386, 340 and US Trademark# 76, 517, 881.