Throughout its lifetime the 911 has been modified by private teams and by the factory itself for racing rallying and other forms of automotive competition this is original art inspired by porsche it is unofficial and in no way associated with porsche porsche and related marks are registered trademarks of porscheltbr gtltbr gtour crew neck short sleeved mens t shirts are 100 premium cotton in a soft pre shrunk jersey knit our womens t shirts are lighter weight 150g tees made