i call BS on the part of that dealer, you cant void a warrenty on a whole vehicle with just a leafspring shackle and t bar crank, i had a leaf break and my warrenty probably would not cover it since i had shackles installed, i can understand that but i went to a good spring shop to get it fixed, but if something else breaks thats not even suspension related and they say you have calmini shackles, they cant fix it is complete BS, they have to prove that the aftermarket piece affected the part that broke