Cinelli King Zydeco Axles: Same Hub Spacing, Different Listed Lengths
Cinelli King Zydeco axles illustrate why hub spacing is only part of a spare-parts description. The 2025 II and original both list 12×142 mm rear and 12×100 mm front spacing. Their accompanying M12 length entries differ, so the shared nominal spacing does not identify one replacement axle for both generations.

Cinelli King Zydeco axles have four distinct length entries
The II rear is listed as M12×174 and its front as M12×121. The original rear is M12×167 and its front M12×132. Preserve the front-or-rear position with each value: the II has the longer listed rear entry but the shorter listed front entry.
These catalogue dimensions are useful references for a supplier, not a complete compatibility decision. The cited rows do not give thread pitch or required engagement. Matching one number, or matching the hub spacing, cannot fill in those missing conditions.
The hanger and brake entries are separate information
The II highlights a UDH hanger and front and rear skewers. The original instead mentions an extra hanger, a Di2/EPS cable insert and front and rear skewers. “Extra hanger” is not the same statement as an identified UDH specification. Retain the actual generation's wording when requesting a derailleur-related spare.
Both frame records describe flat-mount disc brakes with rotor size up to 160 mm. That common brake limit does not determine an axle's pitch or make the hangers interchangeable. An axle, a hanger and a brake mounting interface remain separate parts questions even when their information appears in the same specification block.
Make the enquiry about the identified frame
The catalogue listing is Cinelli KING ZYDECO 2 - GRX 2X12 Bike — DIRTY BLUES. Give the supplier that identity, the axle position and readable markings from the actual part. Ask for the applicable complete replacement reference and instructions for the offered frame version.
Do not use the historical front-wheel photograph as a measurement tool. It supplies related King family context, without verifying a current axle's hidden thread or length. The Cinelli topic groups the other technical questions, with broader background in the brand guide.
Axle FAQ
Do both generations list the same rear hub spacing?
Yes, 12×142 mm, but their adjacent rear entries are M12×174 and M12×167 respectively.
Is thread pitch supplied by these rows?
No. Do not invent it or assume another axle's pitch from nominal spacing.
Does the original's extra hanger wording prove UDH?
No. UDH is explicitly named for the II; the original uses a different description.
Source: Cinelli 2025 catalogue, pages 32–33 and 36–37 (https://www.velofollies.be/Media/ExhibitorGate/exhibitors/638688435635364196.pdf).
Photograph credits and permissions
Photograph 1
Original title: Cinelli King Zydeco Gravel Bike
Creator: Glory Cycles; creator URI: https://www.flickr.com/people/glorycycles/; source-listed website: http://www.glorycycles.com
Original source URI: https://www.flickr.com/photos/glorycycles/48918009712/
License / permission: CC BY 2.0 Generic
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Modification notice: Original downloaded JPEG retained byte for byte by this publisher. Earlier source modifications are unverified. Supplied license name: Attribution 2.0 Generic. Original opaque IPTC FBMD metadata retained.
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