I was originally thinking about just keeping the stock fender and cutting it down, but I wanted to do something a bit different.
I always like the look of the Fat Bob fenders but I didn't like the kits that are sold(direct bolt on Bob fender kits) as they just look too long to me and I wanted more of a race look. I took a stock fat bob fender and cut it down by more than half and just started messing around with the angle and position of it. It helped that I also had the seat I planned on running on it, a Biltwell Banana Seat. Finally at some point I had it in a position that really seemed to conform to the seat and it just looked really cool too me, and the decision was made.
I marked the position I wanted, marked, and drilled the fender using the front stock mounting holes on the rear frame rails. If you look closely you can see I also used the abs plastic lower fender/mud guard section as well. I drilled the rivets out from the stock fender, and mounted it to the inside of this fender to keep the electronics clean and dry.
For the front of the fender I used the stock mounting point again, using a 1/2" bung as a spacer.
I marked the frame rails where I wanted to cut them, leaving them a hair long so I could grind and file them down to a nice contour. **Note: If you will be offended by seeing someone doing permanent changes to an anniversary model Sporty- Do Not continue reading this thread! haha I took a bit of pleasure in the next step!
I cut and rough shaped the frame rails and drilled the rear mounting hole for the seat and bolted it all together.
Here is the fully mocked up rear fender and Banana seat! I still have some finish work to do such as radiusing the lower corners of the fender but I will do this before they come off for paint.