Dyna Glide ModelsSuper Glide, Super Glide Sport, Super Glide Custom, Dyna Glide Convertible, Super Glide T-Sport, Dyna Glide Police, Dyna Switchback, Low Rider, Street Bob, Fat Bob and Wide Glide.
It's 1/2" x 13 thread size. I think the length is different from left to right. Let me go to the garage and check. Mine's a 2013, but it should be the same length. I know the thread size is correct.
The left side is 2 1/4" and uses a nut on the inner side.
The right side is 2" and threads directly into the gusset for the caliper. A 2 1/4" bolt will fit on the right side. I'm not sure why they didn't use a 2 1/4" anyway as the 2" bolt doesn't feed all the way through.