As part of a media event, WRN Editor, Genevieve Schmitt, toured the factory where Harley-Davidson manufactures its big twin engines. That is all of Harleys engines except for the Sportster XL engines. Those are made at a different location. This Pilgrim Road assembly plant is located in Milwaukee, the headquarters of Harley-Davidson Motor Company. Unlike the XL engine factory, public tours of the big twin facility are not given. So heres an exclusive look inside at some of the action. Click on images for a larger view.