Designed and manufactured by Racing Beat, our popular Power Pulse Miata Exhaust System is intended for use on all 1990-95 Miatas. This complete cat-back, bolt-on system is easy-to-install and includes all required mounting hardware. The Power Pulse Miata Exhaust System is 50-state emissions legal and meets all California sound level requirements. Power Pulse Muffler The heart of our Power Pulse Miata Exhaust System is our polished 304-stainless steel muffler canister. This polished canister is equipped with stainless steel inlet and outlet pipes which provides superior durability and a stunning appearance. For maximum performance the Power Pulse Miata Exhaust System features the same 2.375" OD Straight-Flow internal design configuration as our RX-7 Turbo II exhaust systems. The 3.5" OD exhaust tip is manufactured using highly polished 304-stainless steel and is slightly oval in shape to provide a perfect balance and proportional look for the Miata's rear bumper. Each tip features a etched Racing Beat logo to add the finishing touch! Designed and tested entirely by Racing Beat, this Miata muffler features a internal combination of stainless steel wool and ceramic sound-deadening packing insulation to provide the optimum exhaust note for your Miata. The Power Pulse Miata Exhaust System offers a deep, throaty exhaust note, without any harsh, buzzy or "droning" tones. All Racing Beat's exhaust systems are tuned in-house by our engineering team to produce a modest exhaust tone at low speeds, and a bit more attitude under full throttle acceleration.