Adapter Stilo trophy intercom amplifier to Stilo WRC helmet electronics. Designed to plug into the WRC helmet , the cable simply adapts to the standard Stilo Trophy amplifier, it should be noted that the WRC helmet will be a lot quieter than the trophy helmet, it is not the ideal method, the helmet should match the intercom. Please note: Not compatible with Stilo Trophy Rally helmets to WRC Intercom this is not posable.
https://harrisraceradios.com/product/stilo-wrc-to-terratrip-intercom/