Universal Flat Style Rear LED Turn Signals with Smoke Lenses (XK1157F-RR-S) by XKGlow®. Rear. Red halo ring for running. You asked and well, XKGlow here to deliver! Those incandescent bulbs aren’t cool and you know you’re due for an upgrade. Pick your size (Bullet or Flat) and choose your style (Clear or Smoked lenses). This is a true 5 minute install folks! Remove the lenses, replace the bulbs, and install your new lenses; as simple as changing a light bulb! It’s time to retire those old and tired incandescent bulbs and see the light!