Originally Posted by Phillips

The Rally lamp – high wattage filaments producing high light output – is designed for super-charged race circuit-like performance.
Safety Note: The Rally lamp is strictly illegal for use on European roads. Rally lamps produce more heat than standard lamps and thus could damage the reflector. The high power consumption of the Rally lamp could also damage the car electrical system if care is not taken.
Available in: H1, H2, H3, H4, H7.