Not sure which sled came w/ a 47* helix stock but, it was the helix recommended by a lot of Doo dealership mechanics. My 2000 700 summit came w/ a 50/47* which I changed out to a straight 47*, way better backshift. Did the same on my 01 800 summit which I think had a straight 50*. Have since upgraded to DJ's kit and will see, I expect, huge improvements. Hope I'm not telling you something you already know.