Replacement Muffler. This muffler canister is designed to operate primarily with the 87-91 TURBO II, but can be utilized on all 86-92 RX-7s. (We do not recommend the use of this muffler on a non-turbo RX-7 due to the noise level.) This muffler canister is manufactured using 409 stainless steel and features a 2.5-inch straight-through design for maximum performance gains. Finished with a 3-inch polished 304 stainless steel tip, this muffler sounds as good as it looks! This bolt-on component comes complete with a mounting gasket, and can be ordered separately or with the Right Muffler (Part No. 16445). This muffler will bolt directly to the stock Y-pipe or the Racing Beat Y-pipe.