[nkf754]

Hey, I am new here. I have a go kart I bought used. (2 seater) Its originally from tractor supply. Silver Fox. 6.5 hp subaru.n Runs and goes good. Where we live there are lots of hills. With both of my kids in it stuggles goin up hills. I put a new driver clutch from go kart supply and a new belt on and removed and cleaned the driven clutch and installed a new spring. I want more low end power. Should I install a stiffer spring? Where do I get one?

Thanks