Racing Beat Y-Pipe Section 86-92 RX-7 (All) 16447Racing Beat Y Pipe for all 1986 92 RX 7 Applications The Racing Beat Y pipe for the 1986 92 RX 7 (All Models) is a perfect replacement for a failing stock component. The Racing Beat Y pipe is slightly larger in diameter than the stock non turbo Y pipe, and matches the diameter (2. 5" OD) of the stock TURBO II Y pipe. Therefore, if you are replacing the muffler(s) on a TURBO II application, and unless the original stock Y pipe is failing, there is no