Jenson USANew · Checked Sep 5, 2026, 3:25 PM
$58.50Out of stockVisit store
Seatposts
KS Ks | Exaform Speed Up Dropper Seatpost 30.9, 150Mm | Aluminum
MPN C258150309
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
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Catalog trust
Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Sep 9, 2026
- Compatibility review
- Reviewed Sep 9, 2026
Approved technical sources
- Reviewed cockpit fact at jenson-usa catalog row 32765ManufacturerSource checked Sep 5, 2026Evidence reviewed Sep 9, 2026
- Reviewed cockpit fact at Exact C258 option specificationsRetailerSource checked Sep 9, 2026Evidence reviewed Sep 9, 2026
Technical data
Specifications
- Seatpost diameter
- 30.9 mm
- Seatpost length
- 504 mm
- Seatpost offset
- 20 mm