it’s Happening, The New 100X Ultra
not really
drivex metallic is free core
TKF ultra is free core
mjolnir is free core
it feels stiff but not really stiff, a nice technology indeed….
i dont think it would be much stiffer than yonex rackuet, yonex rackets are popular for it’s extra/ultra stiff rackets
100x and 90k metallic is the stiffest speed racket victor ever produced
