If I'm not mistaken, the one I looked at the other day at the LHS, was an Integy brand. I held it in my hand, and looked at it up close, and it wasn't at all that heavy. It was a pretty sturdy, solid piece, however, I'm not too fond of a single wheel wheelie bar. If you hit an un-level surface while riding a wheelie at 30 mph, it could cause the vehicle to cart wheel if your're not careful. Then again it's just my opinion, I personally like the two wheel wheelie bars. It definitely looks sweet as hell though. I've never used one, so I have no experience in this area, so its just my two cents. I use the traxxas two wheel wheelie bar. It does have a massive wheel though!
T.