Another logo t-shirt that made its appearance during Dean’s domesticated days. This one is a black Triumph Motorcycles T-shirt made by Lucky Brand Jeans. It also says, "The Fastest Motorcycles in the World", "Speed, Guts and Glory", "Tiger 80" and “350cc.”
Dean wears this from the beginning of Two and a Half Men (6x02), until after he meets up with Sam at night to see the baby for himself. He has changed by the time he goes to join Sam on the hunt the next morning.
In Mannequin 3: The Reckoning (6x14), Dean wears this shirt while he fixes the Impala at the end of the episode.