I have two Arai Quantum/f helmets that I don't need since I sold my motorcycle. Thought that maybe some of you racer types might be interested. They are both medium, come with a bag, both the clear and tinted visors and have had very little use. The yellow was mine and the silver was my wife's. Arais are pretty high end and it shows in the quality and comfort of these helmets. With the extra visors, we paid $425 each. I have them listed on Craigslist for $250 for the silver and $225 for the yellow (the yellow has a scuff on the tinted visor), but I'll knock $25 off for you swell forum kids ;) These may be overkill for auto X, but they sure were a comfort when riding a bike around these idiot infested streets!
Oh yeah... Snell 2000 and DOT certified since I understand that matters at some events! ::Flag::
http://www.johnlanning.com/Ebay/Silver_Arai.jpg
http://www.johnlanning.com/Ebay/Yellow_Arai.jpg