Quote:
Originally Posted by Gerard C
Have a look to your HANS clips, I remember two different non compatible models are homologated. The ref are engraved both on the helmet and the tethers, they must comply.
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Yes, the requirements were changed, thus the homologation number. Later helmet clips have larger diameter retaining bolts, from memory. As Gerard says, the homologation number on your HANS must be same as the clips..... (If you’ve got or are getting a new helmet it will only take the later clips.)