Kuryakyn Grip End Helmet KewLock - Fits ISO-Grips ISO-Flame Grips Transformer Grips Braided Grips each - 6247

This trick little device adds both a locking helmet holder to the end of your grips as well as functions as a bar end weight to assist in stabilizing. Simply slide your helmet DRing into the slot or use the provided helmet lock extension and lock it in.
Price: 36.98