Few companies have customers as dedicated as those of Harley-Davidson.

That's why the motorcycle maker can put on a four-day 105th anniversary celebration, and expect more than 100,000 people to show up and rumble the city of Milwaukee, where the storied company is based.

The celebration starts Thursday. It also coincides with the 25th anniversary of the Harley Owners Group, or HOG. Last year it surpassed the 1 million member mark and has 1,400 chapters in 135 countries.

The celebration includes a parade, partying along the lake, activities at the new Harley-Davidson Museum, and entertainment from Bruce Springsteen and the E Street Band, Kid Rock, the Foo Fighters and The Billy Bob Thornton Band.

(Copyright 2008 by The Associated Press. All Rights Reserved.)