POLISHED CHROME FINISH C. C MACHINED STAINLESS STEEL. JDM HIGH PERFORMANCE RACING STYLE. 1 SET OF 2.5 QUAD TIP CATBACK EXHAUST SYSTEM. The item is 100% brand new in original box. Made by high quality light weight C. C machined stainless steel. Inlet tip diameter : 2.5. Better air flow design. Provides deep and solid tone. Improves exhaust velocity performance. Offers great flow and higher power gain. Increases additional 5-10 horsepower approximately. Comes with necessary gaskets, bolts and nuts for installation. Professional installation is highly recommended.