Tanabe Racing Development Down Pipes. Tanabe Racing Development products are developed from innovative technology, born and bred on the racing circuit, with specifications above and beyond the typical motorsport quality levels. Tanabe products are rigorously tested in grueling racing series such as Formula NIPPON, JTCC (Japan Touring Car Championship), and JGTC (Japan Grand Touring Championship). As a result, Tanabe can offer suspension and exhaust systems that are designed with driving pleasure as priority one.