Enigma Etape Seatpost Dimensions: Separate Tube and Band Entries
Enigma Etape seatpost dimensions need three labels kept apart. Epic Cycles lists a 31.6mm internal seat-tube diameter, a 34.9mm external diameter and a 34.9mm front-derailleur band. Two identical numbers describe different entries. None should be silently relabelled as a separately documented seatpost-clamp size.
Enigma Etape seatpost dimensions in the frame table
The internal diameter concerns the opening inside the seat tube. The external figure describes the outside of that tube. The front-derailleur band is another named interface, even though its printed diameter matches the external entry. Copy the part names as carefully as the numbers when asking about a replacement.
An Enigma Etape seat tube diameter query can otherwise produce an answer to the wrong question. State whether the enquiry concerns the post, the outer tube, a front-derailleur band or an Enigma Etape seatpost clamp. The dealer's external-tube entry is not a separately supplied clamp specification.
The dealer's posts vary by complete build
Its mechanical 105 example names a Deda Zero post. The Ultegra Di2 example instead names a C-Six carbon post. An Enigma Etape carbon seatpost is therefore a component description in a particular offer, rather than a defining feature of every Etape package.
The catalogue listing is Enigma Etape - ReadyToRide Bike. Its twelve choices are frame packages. Those local labels do not confirm either dealer post as supplied equipment, despite the ReadyToRide title. Obtain an itemised answer for the actual selected offer.
Make a component request that preserves the distinction
For an Enigma Etape front derailleur band enquiry, give the supplier the actual derailleur and frame identification alongside the dealer's named band entry. For a post or collar, identify that component instead. A shared diameter is not evidence that unrelated fittings can be exchanged.
The listing does not supply insertion limits, a permitted exposed-post length, a clamp torque or approval for a shim. The historical photograph's saddle position cannot fill those gaps. Ask for the applicable instructions for the identified frame and component before changing the assembly.
The Enigma introduction covers the broader titanium range. The Enigma topic keeps this small-component question separate from geometry and complete-build comparisons.
FAQ
Which entry is 31.6mm?
The dealer labels it as the internal seat-tube diameter.
Does 34.9mm automatically specify a replacement collar?
No. External tube diameter and the named derailleur band are not a separately documented collar specification.
Does the photographed saddle height establish permitted exposure?
No. It is a historical photographed setting, without an applicable adjustment limit.
Sources
Epic Cycles dealer specification (https://epic-cycles.co.uk/enigma-etape) (read 5 November 2026).
Photograph credits and permissions
Photograph 1
Original title: Clean Etape
Creator: Martin Thomas (humbert15); creator URI: https://www.flickr.com/photos/martin_thomas/
Copyright notice: Embedded sRGB IEC61966-2.1 colour-profile notice: Copyright (c) 1998 Hewlett-Packard Company. This is colour-profile copyright, not photographic authorship.
Original source URI: https://www.flickr.com/photos/martin_thomas/8420157395/
License / permission: CC BY 2.0 Generic
License / permission URI: https://creativecommons.org/licenses/by/2.0/
Modification notice: Original JPEG bytes retained without crop, recompression or colour edits. EXIF and all embedded data preserved. EXIF/XMP identify Aperture 3.4.3; original Enigma/Etape tags and embedded sRGB profile remain. Earlier editing is unassessed.
Source disclaimer: Historical source-identified Enigma Etape with rim brakes. Photograph and upload dates do not establish bicycle production year. Brand and historical-model context only: not the current linked frame package, disc/UDH design, dimensions, parts, fit, condition or compatibility proof. No endorsement or warranty is implied; other rights may apply.