I have an S30, no front suspension, and I switched to a short chainstay because I'm, well...short. So I do have the original medium chainstay set aside, perhaps looking for a new home. This is the older design, when the clamps went around the bb cups, requiring cups that have a flat surface, rather than a beveled surface. If you're interested, I'm thinking about $100.00, and I will pay for shipping.