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Brompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20" Faltrad - 2026 - Space Black

bike24:1021356 · source URL · confidence 0.78 · GTIN 5053099171514

Eligibility

Cannot win: category is other, not city; no size confirmed in stock; not-a-city-bike

Size decisions

retailer labelalphacomparable cmmatchmappingin stockvariant priceevidence

A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 58 → nothing compatible · 60 → nothing compatible

Identity

Only listing of this configuration — nothing to merge.

Provenance — why we believe each fact

fieldsourceevidence
brandretailer:bike24 / parseBrompton
modelretailer:bike24 / derivedBrompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20" Faltrad - 2026 - Space Black
modelYearretailer:bike24 / parseModelljahr: 2026
categoryretailer:bike24 / parseFaltrad
frameMaterialretailer:bike24 / parsesteel
groupsetFamilyretailer:bike24 / dictionaryMicroshift || Shimano Alfine
electronicShiftingretailer:bike24 / parseMechanisch
speedsretailer:bike24 / parse1 x 8
brakesretailer:bike24 / parseHydraulisch
suspensionretailer:bike24 / derivedno suspension fork and no rear shock on a drop-bar listing
forkretailer:bike24 / dictionaryAluminium
dropperPostretailer:bike24 / derivedseatpost row says "starr"
lightingretailer:bike24 / parseDynamo Light System
wheelSizeretailer:bike24 / parse20
weightKgretailer:bike24 / parseGewicht: 13900g
powerMeterretailer:bike24 / derivedabsent from a 48-field spec table
availabilityretailer:bike24 / derivedhttps://schema.org/InStock

Warnings

Score breakdown

{
  "frameScore": 13,
  "drivetrainScore": 4,
  "wheelScore": 5,
  "extrasScore": 3,
  "suspensionScore": 0,
  "weightAdjustment": 3.4,
  "equipmentValue": 28.4,
  "notes": [
    "Microshift Microshift = 9.",
    "Mixed groupset, but no crank or cassette below the family it is ranked as: no penalty.",
    "8-speed -5.",
    "Wheels unknown: scored level with basic aluminium, which is neither a reward for omitting the wheelset nor a penalty for naming a cheap one.",
    "Brakes \"hydraulic-disc\" +3.",
    "13.9 kg vs 16.2 kg city reference = +3.4."
  ],
  "marketPrice": 877,
  "valueScore": 0.331,
  "savingsVsMarket": -1772
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier"
  ],
  "applied": [],
  "rejected": [],
  "notes": "Shifters are Microshift while the hub/gear system is Shimano Alfine (hence mixedGroupset=true). 'Laufräder: 20\" | Double-wall' does not explicitly state rim material or a named wheel model, so wheelMaterial and wheelTier are set to null.",
  "raw": {
    "frameMaterial": {
      "value": "steel",
      "evidence": "Material: Stahl",
      "confidence": 0.9
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Schaltsystem (Hersteller): Shimano",
      "confidence": 0.9
    },
    "groupsetFamily": {
      "value": "Alfine",
      "evidence": "Schaltwerk: Shimano Alfine",
      "confidence": 0.9
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "Schaltungsart: Nabe - Mechanisch",
      "confidence": 0.9
    },
    "speeds": {
      "value": "8",
      "evidence": "Schaltstufen: 1 x 8",
      "confidence": 0.9
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Schalthebel: Microshift\nSchaltwerk: Shimano Alfine",
      "confidence": 0.8
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremsbetätigung: Hydraulisch",
      "confidence": 0.9
    },
    "weightKg": {
      "value": "13.9",
      "evidence": "Gewicht: 13900g",
      "confidence": 0.9
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "notes": "Shifters are Microshift while the hub/gear system is Shimano Alfine (hence mixedGroupset=true). 'Laufräder: 20\" | Double-wall' does not explicitly state rim material or a named wheel model, so wheelMaterial and wheelTier are set to null."
  }
}

Normalized record

{
  "id": "bike24:1021356",
  "retailer": "bike24",
  "retailerProductId": "1021356",
  "productUrl": "https://www.bike24.de/p11021356.html",
  "brand": "Brompton",
  "model": "G Line",
  "modelYear": 2026,
  "category": "other",
  "categoryBasis": "stated",
  "sourceCategory": "city",
  "price": 2649,
  "originalPrice": 3229,
  "currency": "EUR",
  "discountPercent": 18,
  "frameMaterial": "steel",
  "frameModel": "Heat-treated steel tube | hand-soldered | automatically machined solder joints",
  "frameTier": null,
  "groupsetBrand": "Microshift",
  "groupsetFamily": "Microshift",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 8,
  "mixedGroupset": true,
  "groupsetComponents": {
    "shifters": "Microshift",
    "rearDerailleur": "Alfine"
  },
  "groupsetTierSpread": 0,
  "crank": "6061 forged aluminium",
  "cassette": "sprocket",
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "none",
  "fork": {
    "make": null,
    "line": null,
    "tier": "rigid",
    "travelMm": 0
  },
  "rearShock": null,
  "dropperPost": false,
  "beltDrive": null,
  "hubDynamo": null,
  "rack": null,
  "mudguards": null,
  "chaincase": null,
  "kickstand": null,
  "lighting": true,
  "wheelSize": "other",
  "wheelset": "20\" | Double-wall",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Schwalbe G-One All Round | 54-406",
  "weightKg": 13.9,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [],
  "seller": null,
  "availability": "in-stock",
  "gtins": [
    "5053099171514"
  ],
  "imageUrl": "https://images.bike24.com/media/510/i/mb/ee/9e/fa/g-line-small-space-black-1-2036928.jpg",
  "rawTitle": "Brompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20\" Faltrad - 2026 - Space Black",
  "fetchedAt": "2026-09-19T05:37:03.253Z",
  "normalizationConfidence": 0.78,
  "warnings": [
    {
      "code": "not-a-city-bike",
      "message": "Classified as other.",
      "severity": "blocking"
    },
    {
      "code": "no-size-data",
      "message": "No frame sizes could be extracted.",
      "severity": "high"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    },
    {
      "code": "mixed-groupset",
      "message": "Not a uniform groupset: {\"shifters\":\"Microshift\",\"rearDerailleur\":\"Alfine\"}. Ranked on the shifting level, with a penalty.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Produktname": "Brompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20\" Faltrad - 2026 - Space Black",
  "Hersteller": "Brompton",
  "Artikelnummer": "BPT764564",
  "Aktivität": "Radfahren",
  "Geschlecht": "Damen, Herren, Unisex",
  "Material": "Stahl",
  "Radsport Einsatzbereich": "Trekking, City",
  "Kassette": "sprocket",
  "Schalthebel": "Microshift",
  "Schaltwerk": "Shimano Alfine",
  "Kettenblatt Abstufung": "54",
  "Kurbel": "6061 forged aluminium",
  "Bremsen": "Tektro | 140/140mm",
  "Laufräder": "20\" | Double-wall",
  "Sattelstütze Modell": "Standard",
  "Sattel": "Superlight",
  "Lenker": "Small Bar",
  "Gabel": "Aluminium",
  "Steuersatz": "Brompton",
  "Rahmen": "Heat-treated steel tube | hand-soldered | automatically machined solder joints",
  "Schaltsystem (Hersteller)": "Shimano",
  "Schaltungsart": "Nabe - Mechanisch",
  "Empfohlene Körpergröße": "152-168cm",
  "Fahrrad Zusatzausstattung": "mit Lichtanlage, mit Schutzblech, mit Gepäckträger",
  "Art der Bremse": "Scheibenbremse",
  "Laufradgröße": "20\" (406mm)",
  "Fahrrad Sonderausstattung": "bell",
  "Fahrrad Beleuchtung": "Dynamo Light System",
  "Griffe": "Ergonomic",
  "Sattelstütze": "Sattelstütze starr",
  "Hinterbau": "Ungefedert",
  "Pedale": "Wide Platform | Quick Release",
  "Reifen": "Schwalbe G-One All Round | 54-406",
  "Bremsbetätigung": "Hydraulisch",
  "Modelljahr": "2026",
  "Kollektion": "Ganzjährig",
  "Farbe": "Schwarz",
  "Gabel Bauart": "Starrgabel",
  "Gewicht": "13900g",
  "Herstellerartikelnummer": "18R033BS0COGRQ0FG0070120BB3300",
  "Zugverlegung": "extern",
  "Quelle Gewicht": "Hersteller",
  "Gewogene Variante": "small",
  "Produktserie": "Brompton - G Line",
  "Schaltstufen": "1 x 8",
  "Rahmenform": "Faltrad",
  "GTIN": "5053099171514",
  "Herstellerseite": "www.brompton.com"
}

Raw adapter output

{
  "retailer": "bike24",
  "retailerProductId": "1021356",
  "productUrl": "https://www.bike24.de/p11021356.html",
  "extractionMethod": "embedded-json",
  "sourceCategory": "city",
  "rawTitle": "Brompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20\" Faltrad - 2026 - Space Black",
  "rawBrand": "Brompton",
  "price": 2649,
  "originalPrice": 3229,
  "currency": "EUR",
  "imageUrl": "https://images.bike24.com/media/510/i/mb/ee/9e/fa/g-line-small-space-black-1-2036928.jpg",
  "rawSpecifications": {
    "Produktname": "Brompton G Line - 8-Speed - Small - Standard Seatpost - Rear Rack - 20\" Faltrad - 2026 - Space Black",
    "Hersteller": "Brompton",
    "Artikelnummer": "BPT764564",
    "Aktivität": "Radfahren",
    "Geschlecht": "Damen, Herren, Unisex",
    "Material": "Stahl",
    "Radsport Einsatzbereich": "Trekking, City",
    "Kassette": "sprocket",
    "Schalthebel": "Microshift",
    "Schaltwerk": "Shimano Alfine",
    "Kettenblatt Abstufung": "54",
    "Kurbel": "6061 forged aluminium",
    "Bremsen": "Tektro | 140/140mm",
    "Laufräder": "20\" | Double-wall",
    "Sattelstütze Modell": "Standard",
    "Sattel": "Superlight",
    "Lenker": "Small Bar",
    "Gabel": "Aluminium",
    "Steuersatz": "Brompton",
    "Rahmen": "Heat-treated steel tube | hand-soldered | automatically machined solder joints",
    "Schaltsystem (Hersteller)": "Shimano",
    "Schaltungsart": "Nabe - Mechanisch",
    "Empfohlene Körpergröße": "152-168cm",
    "Fahrrad Zusatzausstattung": "mit Lichtanlage, mit Schutzblech, mit Gepäckträger",
    "Art der Bremse": "Scheibenbremse",
    "Laufradgröße": "20\" (406mm)",
    "Fahrrad Sonderausstattung": "bell",
    "Fahrrad Beleuchtung": "Dynamo Light System",
    "Griffe": "Ergonomic",
    "Sattelstütze": "Sattelstütze starr",
    "Hinterbau": "Ungefedert",
    "Pedale": "Wide Platform | Quick Release",
    "Reifen": "Schwalbe G-One All Round | 54-406",
    "Bremsbetätigung": "Hydraulisch",
    "Modelljahr": "2026",
    "Kollektion": "Ganzjährig",
    "Farbe": "Schwarz",
    "Gabel Bauart": "Starrgabel",
    "Gewicht": "13900g",
    "Herstellerartikelnummer": "18R033BS0COGRQ0FG0070120BB3300",
    "Zugverlegung": "extern",
    "Quelle Gewicht": "Hersteller",
    "Gewogene Variante": "small",
    "Produktserie": "Brompton - G Line",
    "Schaltstufen": "1 x 8",
    "Rahmenform": "Faltrad",
    "GTIN": "5053099171514",
    "Herstellerseite": "www.brompton.com"
  },
  "rawFeatures": [],
  "rawSizes": [],
  "availabilityText": "https://schema.org/InStock",
  "fetchedAt": "2026-09-19T05:37:03.253Z",
  "sourceMeta": {
    "skus": [
      "5053099171514"
    ],
    "startingPrice": false,
    "discountInPercent": 17,
    "articleNumber": "BPT764564"
  }
}

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