This helmet is perfect. When I started shopping for a dirtbike helmet, I tried to go cheap. I tried on every major brand and nothing fit. I should have known, since I went through this same thing when roadbike helmet shopping.
Anyway - finally gave up and saved for a Shoei VFX-W. Thank god. Perfect fit, finish, performance. Just an excellent all around helmet.
The only pitfall of this model is it was manufactured a while ago. I just received mine this week and it was made 11/11. Based on the Shoei warranty, I only have 3 years left, instead of 5 But I also paid under $400 - so it was worth it.
Fits exactly like the RF series.