you can get 1 1/8 quill stems obviously, but I think they were only really used in mtb applications. also as threaded 1 1/8 steerers are an uncommon and pretty much obselete standard, i doubt bob jackson would build a new frame with one.
@pppp started
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you can get 1 1/8 quill stems obviously, but I think they were only really used in mtb applications. also as threaded 1 1/8 steerers are an uncommon and pretty much obselete standard, i doubt bob jackson would build a new frame with one.