the gear kit that HL offers is for the Rincon, not for the foreman. The only person that has the kit for the 450 is Nugents Performance. But for some reason they have been having problems getting the them out. The kit I have is a 14% reduction and it gave my bike plenty of torque Well worth the money IMO. Here is the info, just give them a call and see what they say.
Nugent Performance
Phone# (409)287-4353
ask for Billie