Features:100% brand new, never been usedDual-Valve Patented DesignMaterial: High quality stainless steelDiameter: 2'' / 51mm Easy installation and high performance.Easy to control the exhaust volume and air flow.Superior material with delicate workmanship, ensuring excellent quality and durability. Package Included:1 x Electric exhaust with Dual-Valve1 x Wireless Remote (no include battery)1 x Y-Adaptor1 x Wire HarnessAll accessories as shown are included.Notes: This remote controller need one 27A/12V battery. Notes:1.This is a DIY (do it yourself) kit, pleasee keep in mind that you will need custom work to weld this to your factory or aftermarket exhaust.2.Please check to make sure that your exhaust is also 2.0 inches in diameter.3.Do not include installation instructions.4.To avoid the locked-rotor of motor, please don't hold on the button long time. Frequently locked-rotor will affect the life of motor gear. It is only need 2-3 seconds to fully open or fully closed.