Original post by Arsh Sidhu of Trail4runner HOW TO CHOOSE THE SETUP THAT IS BEST FOR YOUR BUILD When it comes to bump stops, you probably have heard of SumoSprings. SumoSprings are the bump stop lineup manufactured by SuperSprings International (SSI) for various vehicle make and models. For 4Runners, SumoSprings come in Black and Blue options for the rear application. Stock bump stops are …