Stock parts and upgrades: record what is on your bike now
The parts your bike left the factory with and the parts fitted today answer different questions. Keep both histories distinct: the original build is a reference for the exact model and year, while your current build is what you can inspect on your bike now.
AI-assisted drafting. We check bicycle-specific claims against the linked manufacturer sources. How these guides are made.
What is the difference between stock parts and upgrades?
Stock parts are the components a source says came with a particular model and year; upgrades or replacements are changes fitted to an individual bike later. Start with the manufacturer’s specification for your exact model year, trim, size, and market. Product families often contain several builds; one component name can vary by frame size, region, or production run. Use the official model page, archive, or service documentation and read its notes. For component-specific service information, search the component’s own identifier in the maker’s technical library, such as Shimano’s manuals portal.
Quiver’s catalog pages can show source-backed factory build details when available. Inspect the cited sources and the exact wording. A factory association means a source lists that part with that bike; it does not mean the part is universally compatible with other bikes. A page with some linked parts is not necessarily a complete bill of materials.
If you are still unsure which year or trim you own, resolve that first with the year-and-trim guide. A close model-family match can produce a plausible but wrong parts list.
Make a useful current-build record
Inspect the bike and record what is installed, not what you remember it originally had. For each part, capture its category, maker, model or visible marking, and any version or size printed on it. A clear photo can help later. Add the date when you made the observation and whether you installed the part, a shop did, or the source is unknown.
For a change, keep the removed part and replacement distinct. Note the date, reason, and cost if useful to you. For example: “Rear tire replaced, June 2026; current sidewall reads [model and size]; removed tire not recorded.” That says what was observed without claiming an exact original SKU or why the manufacturer selected it.
When the label is hidden or worn, record the category and mark the identity unknown until you can inspect it. Do not fill a gap with the nearest catalog result. The app supports a personal build record with catalog parts and custom entries, so an uncertain part can remain personal information instead of being forced into a catalog identity. Review the selected part before saving.
Keep compatibility claims in their lane
“This came stock on this model” and “this replacement fits this bike” are different claims. A factory build record documents an association for a specified bike. Compatibility can depend on dimensions, standards, model year, frame or fork revision, and other installation details. A shared name or visual resemblance does not establish those requirements.
Before buying or installing a consequential replacement, verify requirements in the frame, fork, wheel, or component manufacturer’s documentation, and ask a qualified mechanic when needed. Do not rely on a catalog association alone as a fit approval. Preserve receipts and service records with your ownership notes.
Keep the original factory specification as a point of comparison and update the current build when parts change. Find the original spec sheet for the documented baseline, then look up your bike in the catalog and review its sources. This makes the bike record more useful over time without confusing a researched stock build with the particular bike in your garage.
Make it about your bike
Find your bike in the catalog, then keep a record of what is on it in Quiver. Start with the details you know and add changes as you go.
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Manufacturer references and technical explanations used for this guide. Exact bike specifications still depend on model, year, size and market.