Although a superb looking piece of kit it was so expensive and the fitting looked more complex than stripping down and rebuilding my car using a plastic fork from McDonald's and the little spoon hidden in the lid of a Haagen Daas ice cream tub.
So at small cost it went back. Thanks to the original seller JustHelmets.
In its place I have ordered the Schuberth SRC kit for the C2 from a bike shop in Nice. Fingers crossed it arrives tax paid ifrom a € scoffing nation very soon.
Both kits are made by Cardo, so at least the quality and design can be trusted.
The other kit will move from the aged Nitro to the Shoei.