I don't think you could make it work for several reasons. One reason is that the rake of the Bobber is 29 degrees, a lot more than the GSXR forks were designed for. Second is the weight factor, the bobber weighs in at 555 pounds, probably close to a hundred pounds more than any GSXR. Also, the rear suspension of the bobber has only 2" of travel, and wouldn't be compatable with the Suzuki forks. And lastly, I think it would destroy the looks of a retro styled bobber. My opinion is to save your GSXR forks for some other project that would be more appropriate. Plus, I think the front brakes on the bobber are more than adequate.