AKA Racing 13008SR 1/10 Rebar SC Soft with Red Insert 2 Red Insert (soft): R-Line pre-mounts also feature our new soft red insert Tread performance - each tire tread is computer designed and track tested by AKA engineers Gil Losi, Mark Pavidis and team drivers Lifespan: The long life of the AKA tires is due to the collective decades of rubber compound development Gil Losi brings to the table Balance: Like AKA inserts and wheels, tire balance is critical to superior performance and it''s a priority in AKA tires Mold accuracy: AKA tire molds are made in the U.S.A. using the most advance mold-making techniques and processes available