Happened to be browsing the Ski-Doo website and found this: https://www.ski-doo....arts-chart.html
Parts listings for many of the parts needed for Ski-Doo helmets.
It's been a pet peeve of mine that many parts weren't listed or available for the helmets. But there they are now. I'm going to buy a few things to rejuvenate my old BV2S.