Racing Beat offers our Power Pulse cat-back exhaust system for the 2001-03 Protege Sedan 2.0 liter models (Cannot be installed on Mazdaspeed models). This exhaust system is manufactured using 304-stainless steel tubing, flanges, internal components and muffler canister for superior durability and appearance. Pre-polished 304 stainless steel has been utilized in the construction of the muffler canister, which features a straight-through design for maximum exhaust gas flow and performance. Unlike Mazda's original 2001 Protege MP3 exhaust, which was equipped with only an upgraded muffler, this complete Racing Beat system also includes a larger diameter connecting pipe and s-pipe. Improved exhaust gas flow is achieved through the use of 60mm (2.375" OD) stainless steel tubing used in the S-pipe, connecting-pipe and muffler sections. Each system is finished with a fully polished 304-stainless steel tip etched with the Racing Beat logo. Each system comes complete with all mounting hardware and gaskets. Designed as a bolt-on system, installation can be completed by using only basic hand tools. These exhaust systems are emissions compliant and comply with sound level requirements for the state of California. The exhaust note of this complete system provides a deep, throaty tone without any harsh or "buzzy" sounds. Designed to be slightly louder than the stock system, the Racing Beat exhaust adds just enough "growl" to the exhaust tone under full-throttle acceleration.