Here is a new motorcycle helmet lock made by Kuryakyn model 4220 that will fit any tube diameter between 7/8 and 1.25 inches. This will NOT fit most engine guard bars, but will fit most handle bars or other areas of your bike, any make, with this diameter range. Includes mounting hardware (one way screws) and double key set. Don’t let someone walk off with you expensive helmet. Winner pays $5 shipping.