There is a long thread that talks about this helix in detail. Do a search and you should find it.
It will help belt life and add a little more on top as well as better acceleration. I bought mine through my polaris dealer but you can get it through parts unlimited too.
QUOTE(polarfusion @ Nov 13 2007, 07:27 AM)

Does anyone know were i can get theses hekixes, and for anybody running them what are the + and - . like accel. top end speed. gas,ect..