Are you 100% sure of the correct size required? LBS owner told me that there are 40 different seapost sizes from over the years. Even if available the mfgs. specs can be misleading. Had a Jamis Eclipse that the spec sheet showed was a 27.2. Turned out to be a 1998 frame which took a 26.8. If your LBS has a seatpost sizing device use it or a micrometer would be helpful. Micrometer is the second tool I purchased and have used it 100s of times to make sure things are the right size.