Competitive CyclistNew · Checked Sep 20, 2026, 5:22 AM
$66.67In stockVisit store
Stems
PRO PRO Koryak Di2 Stem Black, 35mm
MPN PRSS0428
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
$66.67In stockVisit storeCatalog 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 Reviewed Koryak Di2 MPN matrixManufacturerSource checked Sep 8, 2026Evidence reviewed Sep 8, 2026
- Reviewed cockpit fact at backcountry catalog row 177453ManufacturerSource checked Sep 5, 2026Evidence reviewed Sep 8, 2026
Technical data
Specifications
- Clamp diameter
- 31.8 mm
- Stem length
- 35 mm
- Stem angle
- 0°
- Steerer clamp diameter
- 28.6 mm