Radial tire for motorcycle

A radial tire for motorcycle comprises a tread portion provided with a belt structure composed of two cross plies of 3x3x0.17 steel cords. The steel cord has a bending rigidity of from 10.0 to 12.0 g·cm. The elongation L100 of the steel cord at a tensile load of 100 N is 1.5 % to 2.0 %.