Specialized Roval Control Sl Carbon Post Seatpost Matte Carbon / Gloss Black 30.9 X 415Mm X 1Mm OffsetFinding your rhythm can make or break your race. Our Control SL seat post puts you in an ideal position for high output efforts, and is easily adjusted thanks to the 2 bolt system letting you easily make micro alignments for that dialed attack positionall while remaining feather light at 180g for XC riding and racing. Its 30. 9mm post diameter and 415mm length make the Control SL seat post a perfect match for the modern XC bike. Once your riding