Just bought the Marzocchi Bomber Z2 forks, I found the guys at Drift extremely helpful and provided great service. Loving the Forks cant believe the improvement in my bike!
The side of these are a little tighter than norm. the shape is more oval so give yourself some leeway. If you measure on the far end of the size spectrum, go up a size if you got a round skull. Other than that, very comfy, VERY light helmet. makes you forget you are wearing one.