Wield your RB5 like corner-carving samurai when you equip it with the FTW Katana. Katana’s innovative styling is fused with enhanced downforce characteristics to give you a distinct competitive advantage. Katana For The Win! Katana fits Kyosho’s Ultima RB5 1:10 scale off-road buggy. Katana is formed from clear .030” polycarbonate with a protective outer film. It comes clear with molded cut lines and includes two wings, a decal sheet, and window masks.