Rear spring rate for Mitsubishi Outlander 2008
 

Hello guys,

I am happy owner of Mitsubishi Outlander 2008, living in Canada BC so doing some off rouding from time to time and mainly using my car for shutle when I mountain biking with my frineds. Anyway, rear get pretty sagy, so I change shocks with coilsrping and add 30mm block, final result its not bad, but now its in the same level as a front without the 30mm lift. I am also carrying lot of tools and pretty often and carying 4 bikes on rear and 4 people its a lot. Anyway, I was wondering if someone knows where I can get spring with higher rate or just simply stronger spings?
Any experience with this?

Thank you