This is a single (1) AKA Racing 1/8 Truggy Grooved Foam Insert. Based on the original industry standard closed cell foam insert, the new grooved insert is designed to take advantage of the radial ribs inside the carcass of the Wishbone and Enduro tires while still providing great performance in the Cityblock, I-Beam, Gridiron and Crossbrace tires.
NOTE: These inserts are sold in SINGLES, not packs of two! If you need foams for an entire truggy, you need to order four separate units. These foams are also not packaged and will be shipped to you loose in a box.