There are lots of SA rated helmets on the market, and the Bell helmet is one of the most popular. The M2 is the most popular of the Bell helmets in the $400 range un-wired. The BR-1 is the new replacement helmet for the M2. Has a bit nicer pivot tension device and drops just a bit lower in the chin area. They come in white, black and flat black.
Hope this helps.
We just got in two BR-1 unwired helmets to be wired here at PCI and these things are pretty big. They weight in at 4.4 lbs wired. That's the heaviest helmet I've seen come in yet, I thought the pyrotect took the cake!
All these weights are blown and wired
M2 - 4.4 lbs
Pyrotect - 4.05 lbs
Simpson Sidewinder - 3.9 lbs
HJC AR-10 - 3.80 lbs (3.85 on the L-XXL)
HJC Carbon - 3.55 lbs
HJC SI-12 - 3.25 lbs