Feature 1Decat Performance Mid Pipe replaces both the primary and secondary catalytic converters to create a free flowing exhaust. 2Directly replace the old mid pipe, fit for 125 250 390 RC390 2017+. Compatible with the all brand 51mm/2in slipon muffler. 3Premium 304 stainless steel material with a thickness of 0.04in, glossy, heat and high temperature resistant, long durability. 4Reduces heat and increase air flow, performance Decat pipe weighs 770g/1.7lbs, original primary and secondary weigh 4.01kg, saving 3.24kg/7.1lbs weight in the catalytic section. Gain anywhere from 5 to 6HP, get the sound and performance by adding this midpipe. 5No need of modifications. (re-mapping, power commander). Lambda sensor (O2 sensor) is located on the original front pipe which is retained and used with this upgrade.Condition: 100% Brand NewItem Type: Exhaust Mid Link PipeMaterial: 304 Stainless SteelColor: As picture shownMid-Pipe: Approx. 51mm/2in (Connect to 51mm Slip-on Muffler)Fitment:Fit for RC390 2017-2020Fit for 125 2017-2020Fit for 250 2017-2020Fit for 390 2017-2020 .wang-edit-text{ font-family:'Arial' !important; } .wang-edit-text table { border-top: 1px solid #000; border-left: 1px solid #000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid #000; border-right: 1px solid #000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; }Package List1 x Exhaust Mid Pipe A1 x Exhaust Mid Pipe B1 x Screw PackNoteThis kit requires the use of the existing OEM clamps and gaskets.