Competitive CyclistNew · Checked Sep 20, 2026, 5:22 AM
$102.00In stockVisit store
Stems
Zipp Zipp Service Course SL B2 Stem Black, 120mm/6 deg
MPN SM0409
Compatibility: reviewed
Known specifications can be used by the compatibility engine.
Retailer offers
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BackcountryNew · Checked Sep 5, 2026, 3:24 PM
$102.00In stockVisit storeJenson USANew · Checked Sep 20, 2026, 3:23 AM
$103.99In stockVisit storeAmazonExact Match Verified
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 Product specification table and exact option identifiersManufacturerSource checked Sep 9, 2026Evidence reviewed Sep 9, 2026
- Reviewed cockpit fact at backcountry catalog row 45812ManufacturerSource checked Sep 5, 2026Evidence reviewed Sep 8, 2026
Technical data
Specifications
- Clamp diameter
- 31.8 mm
- Stem length
- 120 mm
- Stem angle
- 6°
- Steerer clamp diameter
- 28.6 mm