The factory that Made the Jamis stuff, buys seatposts chosen for price according to the model level.

They Dont Make them.. any hints as to which? Tried one 0.2mm larger?



Im @ 220# I cured slipping seat posts With a second Band clamp directly around the seat post, sitting above the Frame seat post clamp.

One is 27.2; the Brompton 31.9, got a 2nd QR band , since the post going down is part of the Fold.




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