For our junior design project, my team and I designed a longboard bushing preloader that replaces the nut on the kingpin of any standard longboard truck. My original project proposal had a very specific solution in mind (see proposal here), but our design process led us in a completely different direction. The bushing preloader was a pleasant surprise that came from a great team that responded to the research rather than charging ahead with a championed idea. Once installed it enables to rider to change the preloaded compression of the bushing to three different settings. The set-up as tested was set for optimal riding at 15-25, 25-35, and 35-45 MPH.