My clutch is tuned OK. I am wondering if it's worth the money to buy a helix and what's a good angle. What color of secondary or what rate is good because my belt has some slip I'm not getting the most out of my machine.

I have AAEN pipe AAEN porting, 0.40 over, 34mm carb, milled head, UNI clamp-on.

 

Where is it slipping? What are the conditions when it does slip? You may not really want to change the helix or spring depending. The slip is almost always on the primary clutch.

 

If you run Aaen stuff, call up the god of the PVT transmission himself. Olav should be able to get you the right thing. He's always willing to try and help. Best to stick with the same company through and through. It always makes it easier for tech and parts help.Bubba