Goheen Cycles Diamond Star Red LED Taillight inserts are some of the brightest LED inserts on the market. These inserts fit any 2" Harley Davidson light housings that use the standard 1157 bulb for a tail light. Each insert uses 48 super bright, automotive grade, SMD LEDS. If you want to be seen when you hit the brakes, get a set of Diamond Start LED Taillight inserts today! Please verify bulb type before placing your order. If you have questions about fitment, feel free to contact us via our contact page.