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Rennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte

bike24:915110 · source URL · confidence 0.83 · GTIN 4252007817228, 4252007817235, 4252007817242, 4252007817259 +2

Eligibility

Can win a band.

Size decisions

retailer labelalphacomparable cmmatchmappingin stockvariant priceevidence
XSXSunknownunsupportedyeslisting price
SSunknownunsupportedyeslisting price
MMunknownunsupportedyeslisting price
LLunknownunsupportedyeslisting price
XLXLunknownunsupportedyeslisting price
XXLXXLunknownunsupportedyeslisting price
mappingunsupported
reason"XS" is a letter size and there is no reviewed Rennstahl equivalence to convert it.

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 / parseRennstahl
modelretailer:bike24 / derivedRennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte
modelYearretailer:bike24 / parseModelljahr: 2026
categoryretailer:bike24 / parseGravel
frameMaterialretailer:bike24 / parseStahl
groupsetFamilyretailer:bike24 / dictionaryShimano GRX RX610 || Shimano GRX RX610 || Shimano GRX RX610
electronicShiftingretailer:bike24 / parseMechanisch
speedsretailer:bike24 / parse2 x 12
brakesretailer:bike24 / parseHydraulisch
suspensionretailer:bike24 / derivedno suspension fork and no rear shock on a drop-bar listing
forkretailer:bike24 / dictionaryParapera Anemos Adventure Carbon
dropperPostretailer:bike24 / derivedseatpost row says "starr"
beltDriveretailer:bike24 / parseShimano GRX RX610
wheelSizeretailer:bike24 / parse28
powerMeterretailer:bike24 / derivedabsent from a 42-field spec table
availabilityretailer:bike24 / derivedhttps://schema.org/InStock

Warnings

Score breakdown

{
  "frameScore": 13,
  "drivetrainScore": 20,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 38,
  "notes": [
    "Shimano GRX = 20.",
    "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\" = 0, the baseline for gravel.",
    "Weight not published: no weight adjustment either way."
  ],
  "marketPrice": 1947,
  "valueScore": 0.928,
  "savingsVsMarket": -152
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "Wheels are listed as \"Furlcrum Red 300\" / \"Laufräder: Furlcrum Red 300\", but the source does not state the wheel material or a recognised tier explicitly, so wheelMaterial and wheelTier are left null. No complete-bike weight or power meter mention in the source.",
  "raw": {
    "frameMaterial": {
      "value": "steel",
      "evidence": "Material: Stahl",
      "confidence": 0.95
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Schaltsystem (Hersteller): Shimano",
      "confidence": 0.95
    },
    "groupsetFamily": {
      "value": "GRX",
      "evidence": "Shimano GRX RX610",
      "confidence": 0.95
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "Schaltungsart: Kette - Mechanisch",
      "confidence": 0.9
    },
    "speeds": {
      "value": "12",
      "evidence": "Schaltstufen: 2 x 12",
      "confidence": 0.95
    },
    "mixedGroupset": {
      "value": "false",
      "evidence": "Shimano GRX RX610",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremsbetätigung: Hydraulisch",
      "confidence": 0.95
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "Wheels are listed as \"Furlcrum Red 300\" / \"Laufräder: Furlcrum Red 300\", but the source does not state the wheel material or a recognised tier explicitly, so wheelMaterial and wheelTier are left null. No complete-bike weight or power meter mention in the source."
  }
}

Normalized record

{
  "id": "bike24:915110",
  "retailer": "bike24",
  "retailerProductId": "915110",
  "productUrl": "https://www.bike24.de/p1915110.html",
  "brand": "Rennstahl",
  "model": "781 Gravel",
  "modelYear": 2026,
  "category": "gravel",
  "categoryBasis": "stated",
  "sourceCategory": "gravel",
  "price": 2099,
  "originalPrice": null,
  "currency": "EUR",
  "discountPercent": null,
  "frameMaterial": "steel",
  "frameModel": "Rennstahl 781 Gravel",
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "GRX",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 12,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "GRX",
    "rearDerailleur": "GRX",
    "frontDerailleur": "GRX",
    "crank": "GRX",
    "cassette": "GRX"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano GRX RX610",
  "cassette": "Shimano GRX RX610",
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "none",
  "fork": {
    "make": null,
    "line": null,
    "tier": "rigid",
    "travelMm": 0
  },
  "rearShock": null,
  "dropperPost": false,
  "beltDrive": false,
  "hubDynamo": null,
  "rack": null,
  "mudguards": null,
  "chaincase": null,
  "kickstand": null,
  "lighting": null,
  "wheelSize": "28",
  "wheelset": "Furlcrum Red 300",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "WTB Riddler 37x700",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 7,
      "price": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 3,
      "price": null
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": null
    },
    {
      "rawSize": "XXL",
      "size": "XXL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 4,
      "price": null
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [
    "4252007817228",
    "4252007817235",
    "4252007817242",
    "4252007817259",
    "4252007817266",
    "4252007817273"
  ],
  "imageUrl": "https://images.bike24.com/media/510/i/mb/33/04/cf/rennstahl-781-gravel-gravel-bike-shimano-grx-2026-black-matte-2025101.jpg",
  "rawTitle": "Rennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte",
  "fetchedAt": "2026-09-19T05:12:03.521Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Produktname": "Rennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte",
  "Hersteller": "Rennstahl Bikes",
  "Artikelnummer": "RSB719970",
  "Aktivität": "Radfahren",
  "Geschlecht": "Herren",
  "Material": "Stahl",
  "Radsport Einsatzbereich": "Allroad / Gravel",
  "Kette": "Shimano GRX RX610",
  "Kassette": "Shimano GRX RX610",
  "Schalthebel": "Shimano GRX RX610",
  "Schaltwerk": "Shimano GRX RX610",
  "Umwerfer": "Shimano GRX RX610",
  "Kettenblatt Abstufung": "46-30",
  "Kurbel": "Shimano GRX RX610",
  "Bremsen": "Shimano GRX 610",
  "Laufräder": "Furlcrum Red 300",
  "Sattelstütze Modell": "Ergotec AL | 27.2mm",
  "Sattel": "Selle Italia or Brooks",
  "Lenkerband": "Selle Italia Smoo Tape Grand Fondo",
  "Lenker": "Syntace Racelite I AL",
  "Vorbau": "Parapera AL Superlight",
  "Gabel": "Parapera Anemos Adventure Carbon",
  "Steuersatz": "Acros",
  "Rahmen": "Rennstahl 781 Gravel",
  "Schaltsystem (Hersteller)": "Shimano",
  "Abstufung Kassette": "11-34",
  "Schaltungsart": "Kette - Mechanisch",
  "Art der Bremse": "Scheibenbremse",
  "Laufradgröße": "28\" (622mm)",
  "Sattelstütze": "Sattelstütze starr",
  "Hinterbau": "Ungefedert",
  "Reifen": "WTB Riddler 37x700",
  "Bremsbetätigung": "Hydraulisch",
  "Modelljahr": "2026",
  "Kollektion": "Ganzjährig",
  "Farbe": "Schwarz",
  "Gabel Bauart": "Starrgabel",
  "Zugverlegung": "extern",
  "Schaltstufen": "2 x 12",
  "Rahmenform": "Diamant",
  "GTIN": "4252007817259, 4252007817266, 4252007817273, 4252007817228, 4252007817235, 4252007817242",
  "Herstellerseite": "https://www.1bike4life.com/rennstahl"
}

Raw adapter output

{
  "retailer": "bike24",
  "retailerProductId": "915110",
  "productUrl": "https://www.bike24.de/p1915110.html",
  "extractionMethod": "embedded-json",
  "sourceCategory": "gravel",
  "rawTitle": "Rennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte",
  "rawBrand": "Rennstahl",
  "price": 2099,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://images.bike24.com/media/510/i/mb/33/04/cf/rennstahl-781-gravel-gravel-bike-shimano-grx-2026-black-matte-2025101.jpg",
  "rawSpecifications": {
    "Produktname": "Rennstahl 781 Gravel - Gravel Bike - Shimano GRX - 2026 - black matte",
    "Hersteller": "Rennstahl Bikes",
    "Artikelnummer": "RSB719970",
    "Aktivität": "Radfahren",
    "Geschlecht": "Herren",
    "Material": "Stahl",
    "Radsport Einsatzbereich": "Allroad / Gravel",
    "Kette": "Shimano GRX RX610",
    "Kassette": "Shimano GRX RX610",
    "Schalthebel": "Shimano GRX RX610",
    "Schaltwerk": "Shimano GRX RX610",
    "Umwerfer": "Shimano GRX RX610",
    "Kettenblatt Abstufung": "46-30",
    "Kurbel": "Shimano GRX RX610",
    "Bremsen": "Shimano GRX 610",
    "Laufräder": "Furlcrum Red 300",
    "Sattelstütze Modell": "Ergotec AL | 27.2mm",
    "Sattel": "Selle Italia or Brooks",
    "Lenkerband": "Selle Italia Smoo Tape Grand Fondo",
    "Lenker": "Syntace Racelite I AL",
    "Vorbau": "Parapera AL Superlight",
    "Gabel": "Parapera Anemos Adventure Carbon",
    "Steuersatz": "Acros",
    "Rahmen": "Rennstahl 781 Gravel",
    "Schaltsystem (Hersteller)": "Shimano",
    "Abstufung Kassette": "11-34",
    "Schaltungsart": "Kette - Mechanisch",
    "Art der Bremse": "Scheibenbremse",
    "Laufradgröße": "28\" (622mm)",
    "Sattelstütze": "Sattelstütze starr",
    "Hinterbau": "Ungefedert",
    "Reifen": "WTB Riddler 37x700",
    "Bremsbetätigung": "Hydraulisch",
    "Modelljahr": "2026",
    "Kollektion": "Ganzjährig",
    "Farbe": "Schwarz",
    "Gabel Bauart": "Starrgabel",
    "Zugverlegung": "extern",
    "Schaltstufen": "2 x 12",
    "Rahmenform": "Diamant",
    "GTIN": "4252007817259, 4252007817266, 4252007817273, 4252007817228, 4252007817235, 4252007817242",
    "Herstellerseite": "https://www.1bike4life.com/rennstahl"
  },
  "rawFeatures": [
    "Langlebiger Rahmen aus Stahl",
    "Gabel aus Carbon für mehr Komfort",
    "Shimano GRX 2x12-fach Schaltung",
    "Furlcrum Red 300 Laufradsatz",
    "Schwalbe G-One Reifen",
    "Befestigungspunkte für diverses Zubehör"
  ],
  "rawSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 7,
      "price": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 3,
      "price": null
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": null
    },
    {
      "rawSize": "XXL",
      "size": "XXL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 4,
      "price": null
    }
  ],
  "availabilityText": "https://schema.org/InStock",
  "fetchedAt": "2026-09-19T05:12:03.521Z",
  "sourceMeta": {
    "skus": [
      "4252007817259",
      "4252007817266",
      "4252007817273",
      "4252007817228",
      "4252007817235",
      "4252007817242"
    ],
    "startingPrice": false,
    "discountInPercent": null,
    "articleNumber": "RSB719970"
  }
}

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