Jenson USANew · Checked Sep 20, 2026, 3:23 AM
$49.99In stockVisit store
Seatposts
Zipp Service Course Seatpost
31.6 mm · 350 mm · 20 mm offset · Blast Black · 31.6 mm · 350 mm · 20 mm offset · Blast Black
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
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Competitive CyclistNew · Checked Sep 20, 2026, 5:22 AM
$54.00In stockVisit storeAmazonExact Match Verified
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Evidence and freshness
Technical-source dates and retailer offer checks are separate. A retailer check does not validate compatibility.
Report a correction- Technical review
- Jul 28, 2026
- Compatibility review
- Reviewed Jul 28, 2026
Approved technical sources
- SP-SC-B2 exact package and specificationsManufacturerSource checked Jul 28, 2026Evidence reviewed Jul 28, 2026
Technical data
Specifications
- Seatpost diameter
- 31.6 mm
- Seatpost length
- 350 mm
- Seatpost offset
- 20 mm