Metzeler MCE 6 Day Extreme 90/90-21 54M T/T M+S Front TyreMetzeler MCE 6 Day Extreme 90 90 21 54M T T M+S Front Tyre This tire was developed with world champion factory riders for the most extreme conditions. Feature : X ply construction with carbon black and polymers for exceptional strength and excellent puncture resistance Knob geometry designed to offer outstanding grip and traction both in dry and wet conditions V pattern tread provides stability and greater braking performance