What is the seatpost dimensions of Kepler? Updated October 31, 2022 01:20 The seat post is 30.4mm in diameter and 400 mm in length. Related articles How long does it take to charge Kepler? Why is the wheel diameter setting on Kepler 27.5 and why? Kepler User Manuals Can I adjust the power on each Pedal Assist Level? What is the weight capacity of the rear rack on the Kepler? Comments 0 comments Please sign in to leave a comment.