RD Series on Simracing.GP

Daily WTCR races on Simracing.GP Weekly GT3 Endurance races on Simracing.GP Weekly GT3 Sprint Races on Simracing.GP Weekly GT4 Sprint Races on Simracing.GP

MGP19 Skin Helmet

I want to replace the texture of some helmet by mine, but it don't show up in the game. I've saved them in TGA format, change the repack folder for Game\assets\graphics\characters\riders\riderShared\helmets\helmetXXX\textures. When i open umodel i can see the texture but it don't show up, I still have the default texture. I use unreal (4.18.3, 4.19.2 and 4.21.2)
Someone know how to solve this?