A freind of mine had a an 02 SP 400 and he wants to put in a different primary clutch spring. He asked me to post a question and see if I could find out which one would be the best for it. He wants better low end, but doesn't want to sacrifice top end. I told him the white spring would probably be the best, but I'm not sure. Any opinions?

 

What year is it? If it is a 4 stroke go with Polaris white if its a old 2stroke go with a green.Check out my signiture I have both and they are set up great for trails.

 

green is what i had put in mine it engages well.