I don't know which one a have. I will have to look when i get home. I was running a straight 51 in my old secondary. should i run the same in the roller or should i run something different. Will it accept a cat purple spring?
MPI sells the helixes that go over the stock buttons on the secondary. The other kind of roller rooster required the secondary to be machined so the helix could sit flat in place. The second one will accept artic cat helixes which are much cheaper than the ones from MPI about $27 for artic cat and $70 for the MPI ones
hey gunner i don't think that a shockwave will work. i'll take it in to ron though and see. I have the one that sits on top of the stock buttons, no machining required.
Have you actually got this installed or looking at installing. The helixes have a slight inside diameter difference. Also what sled are you running this in?