Kross frame number: pair the bottom-bracket label with the e-warranty record
A Kross frame number enquiry has a specific starting point in the manufacturer's help: a small sticker near the bottom bracket. The same answer also locates the frame number on the e-warranty beneath the sale date. Those two references give an owner something concrete to reconcile.
Find the Kross frame number described by the maker
Kross calls this the unique serial or frame number and describes the sticker as protected against external factors. That is not a request to remove its protection, scrape the finish or expose a hidden marking by dismantling the bicycle. If it cannot be read or safely accessed, ask the seller or service point to identify it.
The bottom bracket is a mechanical location, not another name for a model code. The historical FOCUS photograph helps locate that area on a bicycle, but it shows no verified Kross label. Its frame, finish and component layout cannot prove where an identifier is readable on your particular machine.
Compare the identifier with the e-warranty entry
The help answer says these unique data are assigned to each bicycle in the e-warranty process. It places the frame number beneath the sale date on that document. Keep the exact characters and a description of the label's position together when asking about an inconsistency.
A sensible private record can retain a readable label photograph alongside the corresponding document entry. If the two records do not agree or one is missing, describe that actual gap to the seller rather than completing the number from memory. The cited answer supplies no public formula for decoding a bicycle's year or equipment from its serial.
Leave catalogue identifiers in separate fields
One catalogue record you may be checking is Kross BERG 3.0 Bike — Black Glossy. It contains several frame-and-wheel configurations. Those choices describe a product option; they do not uniquely identify an individual frame. Preserve the selected configuration as catalogue information alongside, rather than instead of, the frame number.
This separation also makes a later component enquiry clearer. The individual bicycle, the ordered configuration and a fitted component can each have different identifiers. The Kross brand article explains the range, without turning its family names into a serial decoder or ownership proof.
FAQ: Sticker, document and model
Where does Kross say the sticker is located?
The help answer describes a small sticker near the bottom bracket.
Where is the number on the e-warranty?
Kross says it appears beneath the sale date.
Is the selected BERG wheel option an individual serial?
No. It is catalogue configuration information, not a unique frame identifier.
Build a Kross frame number enquiry around the actual label and corresponding document. Keep full identifiers private and use the Kross topic for general model references.
Manufacturer sources: Kross frame-number help (https://kross.pl/centrum-pomocy/gdzie-znajd-numer-ramy/); BERG 3.0 manufacturer reference (https://kross.pl/berg-3-0-czarny-szary-polysk).
Photograph credits and permissions
Photograph 1
Original title: marble, mountain bike, pink, street, wall, cycle, cycling, bike, seat, wheel
Creator: redfox; creator URI: https://pixnio.com/author/redfox
Copyright notice: Source states public domain, not copyrighted, no rights reserved; no separate copyright notice supplied.
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License / permission: CC0 1.0 Universal
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Modification notice: Original JPEG unchanged here; EXIF and ACDSee Pro 5 notice retained. Source image already has selective-colour appearance; earlier edits unverified.
Source disclaimer: Image-page label: Free to use CC0; supplied URI: https://creativecommons.org/licenses/publicdomain/ . That legacy URI redirects to retired Copyright-Only Dedication/Public Domain Certification 1.0 US, not the CC0 deed; actual redirect URI: https://creativecommons.org/publicdomain/certification/1.0/us/ . Pixnio explicitly permits free personal/commercial reuse; its CC0 explanation links the canonical CC0 URI shown above. Pixnio asks: no unlawful/immoral use, photo/wallpaper-site redistribution or sale, implied endorsement, or automated mass downloads. No warranties; other rights may apply. Historical FOCUS bicycle with visible 50-559/26-inch tyres, unknown model/year; not Kross or current 29-inch configuration, condition, fit or compatibility proof. Publisher context for these Kross owner guides: this photograph is used to locate visible bicycle assemblies and compare different hardware, not to demonstrate work on a Kross. It records no delivery package, installation, stem torque, pedal thread, brake service, completed inspection, serial label, e-warranty, purchase or component-maintenance interval. Those decisions require the actual bicycle, its applicable instructions and its own records.