Halo Lights LED 70mm/90mm Switchback Four Diode Dynamics GMC Morimoto's tail lights are constructed

Morimoto's tail lights are constructed with UV-treated polycarbonate lenses and injection-molded ABS housing for durability and longevity

And like every Diode Dynamics product

they won't harden or crack over time through from hot and cold temperature changes

a 4257 bulb does not

the circuitry compensates for the hyper flash

Halo Lights LED 70mm/90mm Switchback Four Diode Dynamics GMC Morimoto's tail lights are constructedHDHalo Technology. These HD LED halo rings have been designed from the ground up to be absolutely the brightest, most reliable halos physically possible. Each halo is populated with a large number of high density (HD) LEDs, which are then coated by a diffusing gel, resulting in a perfectly uniform light when turned on. When off, the diffusing gel hides the chips, resulting in a clean, OEM appearance. Sizing: All sizes are listed by outside diameter,