Vite in lamiera -DIN 7971 2,9x19mm in acciaio inox (utilizzata per le trombe Rally180 (VSD1T), Rally200 (VSE1T), Sprint150 (VLB1T), TS125 (VNL3T), GT125 (VNL2T), GTR125 (VNL2T), GL150 (VLA1T), Super, SS180 (VSC1T), GS160 / GS4 (VSB1T), VNA, VNB, VBA, VBB,