Pirelli Diablo Rain SCR1 Rear Tyre 140 70 R 17 NHS Tubeless FJ Dynamics the X Ring has two lubrication the X Ring has two lubrication pools and contact lips versus the single contact design of a standard O Ring chain FOTA Firmware Over The Air • The official tyre of the world Superbike championship dedicated to professional riders and to sporting users who are looking for top performance on intermediate surfaces• High performance and total control even in severe wet surface conditions• Excellent traction and stability at high speeds **Contour**Multiple radius for a differentiated contour from the crown to the shoulder• Maximum support at any angle of inclination