XK Glow LED Underglow Light Kit for Polaris Slingshot XKCHROME Smartphone App Controller (Advanced)Brighten your Polaris Slingshot with XKGlow's LED Underglow Light Kits. Controlled by the XkChrome app allowing you to choose from millions of colors, a themes builder and sync to your favorite music. The Smart Brake feature will turn all lights red when the brake is activated for added safety. Plug and play installation after mounting the lights to get you going in no time. Light up your Slingshot today.