The velo orange seatpost is the same length as the stock. The Frame has the al clamp. Kinda glad I tried this out as I found a crack in the OEM post. I have a torque wrench and it has never been tightened above the recomended 9 Nm force. I'm ordering Park SuperGrip and another Velo Orange seatpost to replace the OEM post. I'm a Clyde (230 lbs) so this doesn't surprise me.