I'm sellin my Giro G10 MX size small helmet. It fits 52-55.5 cm, and has an adjustable buckle type thing in the back. It is a brown-ish color and is in pretty descent shape considering I used it for 3 seasons. It has been a great helmet, and is surprisingly pretty light. I'm also including the Audio tune-up which I bought last year. They worked great, all 2 times that I used them. They were kind of a impulse buy. I'm askin 50 + shipping. You have something that I REALLY like, I may trade.
Only imperfection.. it's very small. you can barely see it in person. I actually JUST noticed it when I took the picture. It is just the plastic that is cracked not the protective foam, and only extend about 1.5 inches.