Steel Klunker frames are available in Small, Medium, Large, and X-Large. They come with 12x148mm sliding dropouts, a 1-3/8" seat tube for a 30.9 seatpost, and a 44mm head tube. Klunker frames are available on a 3 month turnaround and are powdercoated your single color of choice. For sizing please refer to our frame geometry in the above images.