Features: 1.Direct mid pipe replacement fit for Yamaha YZF-R1 2009-2014 . This mid pipe matches up perfectly with the OEM header and OEM Mufflers or any brand aftermarket slip-on. 2.Made of 304 stainless steel with a thickness of 1mm/0.04in, glossy, heat and high temperature resistant, durable to use. 3.Reduces heat and increase air flow, over a 4lbs weight saving from catalytic converter removed. 4.Increase performance when used with any slip-on muffler system, dependable to use. 5.Comes with O2 bung adapter to fit stock or aftermarket o2 sensors. Specification: Condition: 100% Brand New_x000D_ Item Type: Exhaust Mid-Pipe _x000D_ Material: 304 Stainless Steel_x000D_ Color: As picture shown_x000D_ Fitment: Fit for Yamaha YZF-R1 2009-2014 PackageList: 1 x Exhaust Mid-Pipe Note: No directions included, recommend professional installation.