Howdy, I have a tech air race in size XL with original box and charger. The air bag will need to be recharged at alpinestar for a cost of $300 which yields 2 uses in race mode. I am the original owner, and discharged the air bag twice, and both times it saved my ass. I just updated the firmware and confirmed the unit is up to date, see photos. I have a tech air 10, was using this as a spare, that’s the reason for sale. I am asking $550 shipped with ins etc. Photos below: https://share.icloud.com/photos/072CY8wk95M36Pf7-GX_gnNIA