With Interact Technology: Latest patented technology. A solution for that Pure Race Time Tuned steel cord winding tension for a modular behaviour from the crown to shoulder, maximising the size of the footprint at different lean angles without a discontinuous feeling New generation of low thermo plasticity compounds for faster and evenly distributed warm up and higher grip in every race situation New compact tread pattern designed to reduce tearing and control progressively the distribution of land and sea ratio (patented) for linear ride at every lean angle Range of compounds precisely tuned for specific weather and surface conditions, ensuring always the right choice from professional races to trackday use K0=Supersoft K1=Soft K2=Medium