CRAZY NUT RACING
I just bought a head from crazy nut last week.Got it a couple of days ago and installed it on my ofna .21 p4.Ran my buggie for a few minutes around the house.Part on the road then in the grass with the stock head first then the crazy nut head.Saw about a 70 degree drop in temp.I ran it just as hard with both heads and was so pleased.Quality is fantastic and performance is even better.You can't go wrong this head.AAA+++