51 field records
Exact official source, identity scope still matches, checked inside the policy window.
BKU007 / PRODUCT + STANDARD EVIDENCE
Verify the field. Preserve the identity scope.
BKU006 deepens exact product evidence while keeping product identity, field provenance, compatibility claims, offer state and editorial rationale separate. Evidence can become stale or unknown; missing values are never filled from another generation or same-name product.
01 / EVIDENCE STATE
Current, stale, unknown and scope-warning are different states.
All 51 loaded field-evidence records were checked on 2026-09-10 and are current under the BKU006 evidence policy. Stale is supported but is not fabricated when no record currently qualifies.
0 current audit records
A future stale field remains historical evidence but loses current-state presentation until reverified.
3 explicit unknowns
Model year, generation label or code is not invented when the exact source does not state it.
Diverge E5 example
Same-family display names can point to different exact product pages and specifications. BKU will not merge them by name.
Identity-scope exampleBR-RX820 RT-MT800 HU-XDR-A1 AC-DRHG-UDH-A1
The preserved Diverge E5 source states 700x35 mm tires, while a separate current Specialized Diverge E5 - Shimano Claris page states 700x38c. BKU keeps both source scopes separate rather than silently overwriting one with the other.
SOURCE-BACKED component
Shimano GRX BR-RX820 Brake Caliper
SHIMANO
2 verified field groups1 compatibility claimstandard links: 1offer: none
Field-level provenance
- Component IdentityGRX disc brake caliperbku.evidence.shimano.br-rx820-official · checked 2026-09-10 · current
- Mount InterfaceSHIMANO Flat Mountbku.evidence.shimano.br-rx820-official · checked 2026-09-10 · current
Standards / compatibility scope
bku.standard.shimano.flat-mount
NO VERIFIED OFFER LOADED
No current price, seller, inventory state or affiliate destination is represented.
SOURCE-BACKED component
Shimano RT-MT800 Disc Brake Rotor
SHIMANO
3 verified field groups1 compatibility claimstandard links: 1offer: none
Field-level provenance
- Mount InterfaceCENTER LOCKbku.evidence.shimano.rt-mt800-official · checked 2026-09-10 · current
- Mount Architecturespline mount and lock ringbku.evidence.shimano.rt-mt800-official · checked 2026-09-10 · current
- TechnologyICE TECHNOLOGIES FREEZAbku.evidence.shimano.rt-mt800-official · checked 2026-09-10 · current
Standards / compatibility scope
bku.standard.shimano.center-lock
NO VERIFIED OFFER LOADED
No current price, seller, inventory state or affiliate destination is represented.
SOURCE-BACKED component
SRAM XDR Driver Body
SRAM
3 verified field groups1 compatibility claimstandard links: 1offer: none
Field-level provenance
- Driver Body TypeSRAM XDRbku.evidence.sram.xdr-driver-service · checked 2026-09-10 · current
- Axle TypeQR/Thru Axlebku.evidence.sram.xdr-driver-service · checked 2026-09-10 · current
- Speed Field11, 12bku.evidence.sram.xdr-driver-service · checked 2026-09-10 · current
Standards / compatibility scope
bku.standard.sram.xdr-driver
NO VERIFIED OFFER LOADED
No current price, seller, inventory state or affiliate destination is represented.
SOURCE-BACKED interface_hardware
SRAM Universal Derailleur Hanger
SRAM
2 verified field groups1 compatibility claimstandard links: 1offer: none
Field-level provenance
- Interface FamilyUniversal Derailleur Hanger (UDH)bku.evidence.sram.udh-service · checked 2026-09-10 · current
- Frame Fit Documents Available2024 MTB Frame Fit Specifications, 2024 Road Frame Fit Specificationsbku.evidence.sram.udh-service · checked 2026-09-10 · current
Standards / compatibility scope
bku.standard.sram.udh
NO VERIFIED OFFER LOADED
No current price, seller, inventory state or affiliate destination is represented.
02 / COMPATIBILITY COMPARISON
Compare evidence states, not brand-family assumptions.
Select two exact product identities. BKU returns only a loaded pairwise evidence state. Matching speeds, brand names or graph neighbors do not become compatibility.
Choose two exact product identities.
No transitive compatibility inference is permitted.
No pairwise evidence evaluated.03 / SOURCE-BACKED COHORT
Ten exact identities. Fifty-one field evidence records.
The cohort remains deliberately bounded and auditable. BKU007 adds brake-caliper, rotor, driver-body and hanger/interface identities so exact products can connect to source-backed standards without activating commerce.
SOURCE-BACKED complete_bicycle
Specialized Diverge E5
Specialized Bicycle Components
7 field evidence records0 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Frame MaterialSpecialized E5 Premium Aluminumbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- Frame Interfacesthreaded bottom bracket, 12x142 mm rear thru-axle, flat-mount discbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- Fork MaterialSpecialized FACT carbonbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- Fork Interfaces12x100 mm front thru-axle, flat-mount discbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- Rear DerailleurShimano Claris, 8-speedbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- CassetteSunRace, 8-speed, 11-34tbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
- Tire Size700x35 mmbku.evidence.specialized.diverge-e5-official · checked 2026-09-10 · current
Scoped compatibility evidence
- No compatibility claim loadedProduct identity and adjacent graph records do not establish interoperability.
Identity source
bku.evidence.specialized.diverge-e5-official
US official product page observed on verification date; no model year or generation asserted unless the source states it.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
SOURCE-BACKED component
Shimano GRX RD-RX820 Rear Derailleur
Shimano
6 field evidence records1 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Model CodeRD-RX820bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
- Drivetrain Speed12bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
- Low Sprocket Min Teeth34bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
- Low Sprocket Max Teeth36bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
- Total Capacity Teeth42bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
- Maximum Front Chainring Difference Teeth17bku.evidence.shimano.rd-rx820-official · checked 2026-09-10 · current
Scoped compatibility evidence
- Cassette CompatibilityOfficial Shimano product page states compatibility with 11-34T and 11-36T 12-speed cassettes.bku.evidence.shimano.rd-rx820-official · scope only · non-transitive
Identity source
bku.evidence.shimano.rd-rx820-official
Official Shimano product-detail page; only fields explicitly supported by that page are stored.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
SOURCE-BACKED component
SRAM Rival AXS Rear Derailleur
SRAM
7 field evidence records2 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Model CodeRD-RIV-E-E1bku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Drivetrain Speed12bku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Max Tooth36bku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Drivetrain Configuration1x, 2xbku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Communication ProtocolAXSbku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Shift TechnologyWirelessbku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
- Chain TechnologyRoad Flattop D1/E1bku.evidence.sram.rival-axs-rd-e-e1-official · checked 2026-09-10 · current
Scoped compatibility evidence
- Cassette CompatibilityOfficial SRAM product page states compatibility with cassette sizes from 10-28T through 10-36T.bku.evidence.sram.rival-axs-rd-e-e1-official · scope only · non-transitive
- Drivetrain ConfigurationOfficial SRAM product page lists 1x and 2x drivetrain configurations.bku.evidence.sram.rival-axs-rd-e-e1-official · scope only · non-transitive
Identity source
bku.evidence.sram.rival-axs-rd-e-e1-official
Official SRAM product page; price is intentionally excluded from the product identity layer.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
SOURCE-BACKED component
Shimano GRX FC-RX820-1 Crankset
Shimano
6 field evidence records1 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Model CodeFC-RX820-1bku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
- Drivetrain Configuration1xbku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
- Drivetrain Speed12bku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
- Cassette Options10-45T, 10-51Tbku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
- Chainring Options Teeth40, 42, 44, 46bku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
- Crank Arm Lengths Mm160, 165, 170, 172.5, 175bku.evidence.shimano.fc-rx820-1-official · checked 2026-09-10 · current
Scoped compatibility evidence
- Documented Gearing OptionsOfficial Shimano page describes pairing 10-45T or 10-51T cassette options with 40T, 42T, 44T and 46T chainring options for FC-RX820-1.bku.evidence.shimano.fc-rx820-1-official · scope only · non-transitive
Identity source
bku.evidence.shimano.fc-rx820-1-official
Official Shimano North America product-detail page. Only fields explicitly stated on that exact page are stored; pairing statements are preserved as scoped evidence, not full-system certification.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
SOURCE-BACKED component
SRAM XPLR XG-1251 Cassette
SRAM
7 field evidence records3 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Model CodeCS-XG-1251-D1bku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Drivetrain Speed12bku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Gearing10-44Tbku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Cog Sizes Teeth10, 11, 13, 15, 17, 19, 21, 24, 28, 32, 38, 44bku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Driver Body InterfaceXDRbku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Drivetrain Configuration1xbku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
- Chain TechnologyRoad Flattop D1/E1bku.evidence.sram.xg-1251-official · checked 2026-09-10 · current
Scoped compatibility evidence
- Rear Derailleur Family UseOfficial SRAM page states XG-1251 is for use with XPLR 1x rear derailleurs.bku.evidence.sram.xg-1251-official · scope only · non-transitive
- Chain Family CompatibilityOfficial SRAM page states XG-1251 is compatible with Flattop chains.bku.evidence.sram.xg-1251-official · scope only · non-transitive
- Driver Body InterfaceOfficial SRAM page states XG-1251 is compatible with the XDR driver body interface.bku.evidence.sram.xg-1251-official · scope only · non-transitive
Identity source
bku.evidence.sram.xg-1251-official
Official SRAM product page. Price and dealer state are intentionally excluded from identity/evidence records.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
SOURCE-BACKED component
SRAM Rival XPLR eTap AXS Rear Derailleur
SRAM
8 field evidence records2 compatibility claimssource state: current_verifiedoffer: none
Field-level provenance
- Model CodeRD-RIV1-E-D1bku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Drivetrain Speed12bku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Max Tooth44bku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Drivetrain Configuration1xbku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Rd Minimum Cassette Teeth36bku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Communication ProtocolAXSbku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Shift TechnologyWirelessbku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
- Chain TechnologyRoad Flattop D1/E1bku.evidence.sram.rival-xplr-etap-rd-d1-official · checked 2026-09-10 · current
Scoped compatibility evidence
- Cassette Family UseOfficial SRAM page states RD-RIV1-E-D1 is 1x-specific for use with 10-44T XPLR and 10-36T cassettes and Flattop chains.bku.evidence.sram.rival-xplr-etap-rd-d1-official · scope only · non-transitive
- Explicit ExclusionOfficial SRAM page states RD-RIV1-E-D1 is not compatible with Eagle cassettes and chains.bku.evidence.sram.rival-xplr-etap-rd-d1-official · scope only · non-transitive
Identity source
bku.evidence.sram.rival-xplr-etap-rd-d1-official
Official SRAM product and service pages for model RD-RIV1-E-D1. Only explicit model-scoped fields are stored.
Offer state
No verified offer loaded
No current price, seller, inventory, shipping or affiliate destination is represented.
04 / RESEARCH FLOW
Buying research stays open-ended.
Use the technical systems already built in BKU before any future offer layer enters the workflow.
1 · SelectNeed lenses, not winners.2 · CompareCanonical archetype fields.3 · GeometryReference dimensions, no handling score.4 · WorkshopInterface identity before procedure.5 · Product evidenceExact sources. Offers still disabled.
0active offers in BKU006
No price, retailer, inventory, shipping, affiliate destination or sponsored ranking is allowed to appear as current commerce data.
BKU007 / STANDARDS GRAPH
Matching interface labels are questions, not guarantees.
Open the standards layer to see exact requirements marked established, missing, stale, conflicting or unknown. Zero-count states remain visible instead of being fabricated.
BKU008 / ASSEMBLY RESEARCH
Exact products can now be inspected as bounded research sets.
The assembly inspector shows established, missing and unknown interface requirements without generating a system compatibility or ready-to-ride verdict.
BKU010 / GAP NAVIGATION
Missing product evidence now has an explicit next-research path.
Research paths preserve exact identity and provenance boundaries while showing which evidence surface to inspect next.
ICU-EXPEDITION-025 / EVIDENCE SNAPSHOT
Dates and availability belong beside the claim scope.
The active Bikes evidence records in this candidate are a supplied snapshot, not live web checks. The R000013 evidence ledger records source access on 2026-09-10, and the availability review records checks on 2026-09-11. Source-access dates, availability-review dates, next-review dates, blocked states and scope-review states stay visible so a reachable URL is never treated as automatic proof that a claim is still current.
Inspect availability states · Inspect freshness queue · Save a verification handoff
ICU / CONNECTED DISCOVERY
Continue through related ideas.
These are bounded editorial connections; paid placement does not influence them.
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