In the search for more comfort and control of bikes outfitted with 39mm front ends, we decided to upgrade to a preload adjustable fork cap from Roland Sands Designs (RSD). With these caps you can adjust the feel of your forks with the turn of a wrench. Since the adjusters looked so good, we also decided to get a matching RSD triple tree nut. RSD has been making cutting-edge, industry-shaping components for years, so we know prior to opening the package that what we are about to install is a well-made product. Follow along with us as we install 'em on this here Harley-Davidson.