How to tell if you have "big boy" spring

[yukonrider]

I Think I have the "big" spring on the rear of my 07 RMK, it measures about .403 with the calipers, what is the stock one?

I weigh about 165 geared up, and soaking wet, so I don't need the heavy spring.... Which spring would I need?

 

[GarAlaska]

.359 torsion springs

 

[sledless bdh]

So, is the one he has the big boy spring? If so....wanna trade me for the standard spring?

 

[modsledr]

Someone correct me if I'm wrong, but the diameter of the spring is the same, but the "big boy" springs aren't wound as tight (meaning you have to wind them tighter to install them)...essentially adding more "preload".

The only way to tell the difference is to lay them side by side and compare the winding.