I have an 03 grizzly 660 stock and am ordering 27" executioner tires a 1.5mm shim and a purple spring. Would I need to do the weights?
I don't remember how much top end speed was lost, but I solved that by cutting the cam plate and resetting the angle.How much top end did you lose using 2.5mm? I want to go 2mm but don't want belt to rub. What happens when belt rubs?