In the words of Triumph's famous sales slogan, Edward Turner designed "The Best Motorcycle in the World" in its 1959 promotional material. "The Bonneville 120 offers the highest performance available today from a standard production motorcycle," the brochure continued. "This is the motorcycle for the really knowledgeable enthusiast who can appreciate and use the power provided."
My submissions would be:
for the more cerebral: "Triumph, for the really knowledgeable enthusiast"
or simply: "Triumph, The Best Motorcycle In The World"