Only for a few moments before "Livin' in the Future" did the rocker - who often brings his liberal-leaning political comments to the stage - stray into politics.
Springsteen performed to a crowd not unlike the one that gave Republican presidential candidate John McCain a warm welcome Aug. 4 at the Sturgis Motorcycle Rally in South Dakota. Many roared their motorcycles during McCain's speech.
Springsteen said "Livin' in the Future" was about what was happening now: cheese, Harley-Davidson motorcycles (tailoring it to his Wisconsin crowd), transfats, "500 channels of nothing on" and the Bill of Rights.
But he also mentioned wire tapping and rendition - the secret transport of terror suspects from one country to another.
"Things that basically at the heart are un-American," he said. The crowd gave spattered groans but mostly stayed silent.
He did not play "Born in the U.S.A," his anthem about the difficulties Vietnam war veterans faced, or the anti-war ballad "Devils and Dust" about Iraq.
Springsteen's Saturday performance was his last stop on his tour. His Web site said Springsteen and the E Street Band have performed 100 concerts for more than 2 million fans.
Milwaukee-based Harley-Davidson expected more than 100,000 people from around the nation and world to participate in the four-day celebration that officially started Thursday in Milwaukee and its suburbs. It included a parade through the city, a party along the lake, activities at the new Harley-Davidson Museum, a special exhibit at Discovery World and other big-name bands.