Features: Full control over Exhaust Valve Control at the touch of a steering wheel button Open/Close Exhaust Valve at any time and instantly Even on cold starting, flaps can be opened Delete-R function Easy 30-minute installation process with no wire cutting Completely removable at any time Suitable models: For E82/E88 1-Series 2004-2012 For F2X 2-Series 2014+ For F3X 3-Series 2012+ For F3X 4-Series 2014+ For F1x 5-Series 2011+ For F8X M3/ 2015+ Name: Exhaust Valve material: metal color: silver Package Contents: 1 pcs Exhaust Valve(3 inches) Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.