Enigma Etape Bottom Bracket: Shell Specification Versus Listed Build Parts
Enigma Etape bottom bracket information has two levels: the frame's shell description and the part named in a dealer's complete build. Epic Cycles lists a 68mm British-thread shell. Its Shimano and SRAM build examples then name different bottom brackets. Keep those entries separate when planning an enquiry about an actual frame.
Enigma Etape bottom bracket shell versus fitted part
The Enigma Etape threaded shell entry describes the frame interface in the dealer's specification. The Enigma Etape 68mm shell wording is not a complete replacement-part number. It does not identify every bearing, cup, spacer or crank interface needed for an uninspected bicycle.
The dealer names Shimano RS501 for its mechanical 105 and 105 Di2 examples. SRAM DUB appears in its Rival AXS E1 and Force AXS E1 examples instead. These are named combinations within the dealer's own offers, rather than permission to substitute any product sharing one of those family names.
Match the enquiry to the actual crank
An Enigma Etape Shimano RS501 search should retain the corresponding build's crank identity. Likewise, Enigma Etape SRAM DUB describes a dealer listing here, not universal DUB compatibility. The frame-shell description alone does not specify which version of a broadly named replacement is required.
Ask the supplier to identify the existing crank and bottom-bracket markings and the applicable frame specification. State whether the task is identifying an original dealer build or specifying a new assembly. Those requests can begin with the same shell entry while requiring different evidence.
Do not turn a frame package into a complete build
The catalogue listing is Enigma Etape - ReadyToRide Bike. Its twelve configurations describe frame packages; this article does not assign RS501 or DUB to those choices. Confirm package contents and the complete proposed build independently.
The historical rim-brake Etape photograph provides a real example of the model's earlier context. Its view of the bicycle cannot authenticate hidden bearing dimensions or prove a current shell standard. A familiar frame silhouette is less useful for this task than a readable component marking and the applicable documentation.
Use the Enigma equipment topic for the related package questions and the brand introduction for model background. No removal method, tightening torque or adapter is prescribed by this comparison.
FAQ
What shell does the dealer list?
Its frame specification says 68mm British Thread.
Does that entry identify a complete replacement bottom bracket?
No. The actual crank, component version and applicable assembly still need identification.
Are RS501 and DUB confirmed local package contents?
No. They belong to separately described dealer complete-build examples.
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.