JConcepts Smoothie 2 - 2.2" 4WD Front Buggy Tires (2) (Silver)The JConcepts Smoothie 2 2. 2" 4WD Front Buggy Tires are a great option for indoor clay surfaces. The total slick design features a 2. 2" mounting bear diameter with a profile designed to roll through the turns providing maximum grip. The Smoothie 2's include Dirt Tech inserts which have made an immediate presence on the racing scene since their release. These tires are perfect for medium to high grip track conditions. Package includes two rear buggy