This is a Universal Armrest to fit on all standard sissy bars. If your backrest is at least 8 to 9 inches high from the top of the seat, the Armrest slips between the backrest and the sissy bar.
We have two sizes available; the standard size fits an 8 to 9-inch wide sissy bar and the extra wide, fits up to 12-inch sissy bar.

The pads on our Armrests are 3-inches wide by 8-inches long. The foam is 2-inches thick and covered by hand sewn black vinyl.

No, they are mounted stationary to the sissy bar and backrest, it only extends out about 5 inches forward from the front of the back rest allowing sufficient space for easy mounting and dismounting.

The mounting area of the armrest is from 2-inches to 6-inches above the top of the rear seat. Any bolts that mount the backrest to the sissy bar in this area can be used to mount the Armrest.