The taillight assembly is mountable to a swing arm of a rear suspension motorcycle frame and includes a tubular cover housing and an LED lamp disposed within the cover housing. The LED lamp is electrically wired to the motorcycles electrical system by wires that are run internally through the cover housing and swing arm. The LED lamp uses a plurality of individual light emitting diodes (LEDs), which convert electric energy into electromagnetic radiation (light). The LED lamp is configured so that one portion of the LEDs emit a red light and another portion emit a white light.