Our Supermoto ECO product line has been designed as an economical solution for recreational riding, while still providing outstanding braking performance for every day use. The Supermoto ECO Discs are 4mm thick and utilize a 320MM non-floating design. This disc must be used in combination with the OEM brake caliper and an aluminum caliper adapter bracket, which is CNC machined and orange anodized. For optimal performance use new brake pads with a racing compound. Supermoto ECO Discs are not compatible with a Moto-Master racing caliper.