has anyone had any experience with these, do theymake much differnce, as some of you know, i'm saving every penny i can to spend on my SR at the end of this summer and re-bulding it in the winter.
I'm guessing you mean for a 125? There isn't really any reason. They allow for more adjustability and are supost to keep a better spark at higher rpm's. They will also just like a aftermarket CDI remove the 10k rev limit. So unless you some how manage to get a 125 to rev like a race tuned 70 they arn't worth the large price tag. :nerd: