This kit is a direct replacement of the wiring that is fitted inside all the Stilo WRC DES, ST5 and ST4 rally helmets.
This kit comes with a screw-in comm port fitted as standard on the above helmets, you simply unscrew and remove your old electronics from the helmet casing and replace with this kit.
This kit can also be used to convert an ST5 GT or ST5 F helmet to use 'full rally' electronics. Stilo WRC Venti helmets have a different comm port and the part number for this replacement is AE0226