Sounds like a tall order...a lightweight air fork for around $200. Problem is, just because it's an air fork doesn't mean it's lightweight. The RockShox Tora line of air forks are typically in the 5lb range. Has more to do with the fork materials than with the internals. I think you will have trouble finding anything in the 4lb range for that price without going the ebay/craigslist used route.
If you want to relax your specs a little, how about trying this one from JensonUSA:
http://www.jensonusa.com/store/product/FK268A23-Rockshox+Recon+Silver+Tk+Coil+Fork+11.aspx
The Recon's are one of the more under-rated forks out there and at 4.9lbs aren't total pigs. They are adjustable and you can swap the springs for lighter/stiffer ones as well.
Good luck in your search.
MTBmoose
If you want to relax your specs a little, how about trying this one from JensonUSA:
http://www.jensonusa.com/store/product/FK268A23-Rockshox+Recon+Silver+Tk+Coil+Fork+11.aspx
The Recon's are one of the more under-rated forks out there and at 4.9lbs aren't total pigs. They are adjustable and you can swap the springs for lighter/stiffer ones as well.
Good luck in your search.
MTBmoose
.40AET said: