Here are my entries. I tried to keep it to a more traditional Harley feel without being over-the-top. I included the use of orange and black, in some of the designs so that you have a choice. Because, I have done plenty of work with manufactures of motorcycle part, including several catalogs and magazine ads, I am aware of how seriously HD takes the branding and how restrictive they are with any usage or resemblance with their brand image. However, the standard work around has been to include some orange and black color, on logos, dealer names, ads, websites... HD can not lay claim to the colors themselves, so as long as there no intention to deceive the public or in any way as being directly associated or endorsed by HD, you should not have to feel restricted. As long as the logo is not meant to look like, or carry the eagle in HD colors, use of similar fonts, or actually show an actual HD bike, you are OK. A quick Google search of HD dealers, aftermarket parts manufacturers or resellers, will show you an idea of what can be done.
I also included some color options as well as different looks for the (telescopic forks as well as springers}. Feel free to ask for any combo you would like to see i.e. the color of one design swapped out with the bike of one of my other designs.