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Bulls Grinder 1 Gravel Bike 28" rot

zweirad-stadler:bulls-grinder-1-gravelbike-herren-28-rot · source URL · confidence 0.83

Eligibility

Can win a band.

Size decisions

A shopper asking for: 54 → 55 cm in stock · 56 → 55 cm in stock · 58 → nothing compatible · 60 → nothing compatible

Identity

Canonical configuration: Bulls | Grinder 1 Gravel Bike 28" | Claris
Confidence: medium

• brand exact (Bulls)
• model normalized to "grinder 1 gravel 28"
• groupset family exact (Claris)
• model year unavailable on every listing
• 3 listings across 1 retailer
• downgraded to medium: no shared GTIN, and no listing states a model year

Provenance — why we believe each fact

Warnings

• info single-size-only — Only one size is in stock (55 cm).
• info wheel-material-unknown — Wheel material could not be established.

Score breakdown

{
  "frameScore": 11,
  "drivetrainScore": 6,
  "wheelScore": 5,
  "extrasScore": -2,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 20,
  "notes": [
    "Shimano Claris = 6.",
    "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 \"mechanical-disc\" -2.",
    "Weight not published: no weight adjustment either way."
  ],
  "marketPrice": 1069,
  "valueScore": 1.078,
  "savingsVsMarket": 77
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "Wheel material/tier cannot be determined from 'Felgen: DDM-2' (brand/model not mapped to a known tier) and no explicit wheel material is stated. No complete-bike weight is given (only 'zul. Gesamtgewicht: max. 125 kg' which is payload limit, not bike weight).",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Material: Aluminium",
      "confidence": 0.95
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Shimano Claris 16-Gang Kettenschaltung",
      "confidence": 0.9
    },
    "groupsetFamily": {
      "value": "Claris",
      "evidence": "Shimano Claris 16-Gang Kettenschaltung",
      "confidence": 0.9
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "Shimano Claris 16-Gang Kettenschaltung",
      "confidence": 0.85
    },
    "speeds": {
      "value": "16",
      "evidence": "Shimano Claris 16-Gang Kettenschaltung",
      "confidence": 0.95
    },
    "mixedGroupset": {
      "value": "false",
      "evidence": "Schalthebel: Shimano Claris ST-R2000\nSchaltwerk: Shimano Claris\nKurbel: Shimano Claris FC-RS200 46/34/",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "brakes": {
      "value": "mechanical-disc",
      "evidence": "Bremsenart: Mechanische Scheibenbremsen",
      "confidence": 0.95
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "Wheel material/tier cannot be determined from 'Felgen: DDM-2' (brand/model not mapped to a known tier) and no explicit wheel material is stated. No complete-bike weight is given (only 'zul. Gesamtgewicht: max. 125 kg' which is payload limit, not bike weight)."
  }
}

Normalized record

{
  "id": "zweirad-stadler:bulls-grinder-1-gravelbike-herren-28-rot",
  "retailer": "zweirad-stadler",
  "retailerProductId": "bulls-grinder-1-gravelbike-herren-28-rot",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1-gravelbike-herren-28-rot.html",
  "brand": "Bulls",
  "model": "Grinder 1 Gravel Bike 28\" rot",
  "modelYear": null,
  "category": "gravel",
  "categoryBasis": "stated",
  "sourceCategory": "gravel",
  "price": 992,
  "originalPrice": 1299,
  "currency": "EUR",
  "discountPercent": 24,
  "frameMaterial": "aluminium",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "Claris",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 8,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "Claris",
    "rearDerailleur": "Claris",
    "frontDerailleur": "Claris",
    "crank": "Claris"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano Claris FC-RS200 46/34/",
  "cassette": "Shimano CS-HG50-8, 8-PCS, 11-34 T",
  "brakes": "mechanical-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": "DDM-2 | Center Lock und Schnellspanner",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Schwalbe CX Comp K-Guard",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "55 cm",
      "size": "55",
      "sizeCm": 55,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "seller": null,
  "availability": "limited",
  "gtins": [],
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-grinder-1-gravelbike-rot-133748-a.jpg",
  "rawTitle": "Bulls Grinder 1 Gravel Bike 28\" rot",
  "fetchedAt": "2026-09-19T06:32:11.670Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "single-size-only",
      "message": "Only one size is in stock (55 cm).",
      "severity": "info"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Material": "Aluminium",
  "Farbe": "rot",
  "Gabel": "Aluminium",
  "Steuersatz": "FSA Orbit C40ACB (No. 42/ACB)",
  "Schaltung": "Kettenschaltung",
  "Gänge": "16-Gang",
  "Schaltwerk": "Shimano Claris",
  "Umwerfer": "Shimano Claris",
  "Schalthebel": "Shimano Claris ST-R2000",
  "Bremsenart": "Mechanische Scheibenbremsen",
  "Bremsen": "Shimano BR-RS305",
  "Bremsscheiben": "160 mm / 160 mm",
  "Kurbel": "Shimano Claris FC-RS200 46/34/",
  "Kassette": "Shimano CS-HG50-8, 8-PCS, 11-34 T",
  "Kette": "KMC, HG-40",
  "Lenker": "Gravel S",
  "Griffe": "Comfortgriptape 3mm",
  "Vorbau": "MTB-S, CCS Slot Mount ready",
  "Sattelstütze Art": "Patent",
  "Sattelstütze": "Bulls Aluminium",
  "Sattel": "Bulls Gravel",
  "Laufradgröße": "28\"",
  "Felgen": "DDM-2",
  "Reifen": "Schwalbe CX Comp K-Guard",
  "Nabe vorne": "Center Lock und Schnellspanner",
  "zul. Gesamtgewicht": "max. 125 kg",
  "Rahmenform": "Gravel",
  "Herstellerfarbe": "liquid copper matt"
}

Raw adapter output

{
  "retailer": "zweirad-stadler",
  "retailerProductId": "bulls-grinder-1-gravelbike-herren-28-rot",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1-gravelbike-herren-28-rot.html",
  "extractionMethod": "server-html",
  "sourceCategory": "gravel",
  "rawTitle": "Bulls Grinder 1 Gravel Bike 28\" rot",
  "rawBrand": "Bulls",
  "price": 992,
  "originalPrice": 1299,
  "currency": "EUR",
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-grinder-1-gravelbike-rot-133748-a.jpg",
  "rawSpecifications": {
    "Material": "Aluminium",
    "Farbe": "rot",
    "Gabel": "Aluminium",
    "Steuersatz": "FSA Orbit C40ACB (No. 42/ACB)",
    "Schaltung": "Kettenschaltung",
    "Gänge": "16-Gang",
    "Schaltwerk": "Shimano Claris",
    "Umwerfer": "Shimano Claris",
    "Schalthebel": "Shimano Claris ST-R2000",
    "Bremsenart": "Mechanische Scheibenbremsen",
    "Bremsen": "Shimano BR-RS305",
    "Bremsscheiben": "160 mm / 160 mm",
    "Kurbel": "Shimano Claris FC-RS200 46/34/",
    "Kassette": "Shimano CS-HG50-8, 8-PCS, 11-34 T",
    "Kette": "KMC, HG-40",
    "Lenker": "Gravel S",
    "Griffe": "Comfortgriptape 3mm",
    "Vorbau": "MTB-S, CCS Slot Mount ready",
    "Sattelstütze Art": "Patent",
    "Sattelstütze": "Bulls Aluminium",
    "Sattel": "Bulls Gravel",
    "Laufradgröße": "28\"",
    "Felgen": "DDM-2",
    "Reifen": "Schwalbe CX Comp K-Guard",
    "Nabe vorne": "Center Lock und Schnellspanner",
    "zul. Gesamtgewicht": "max. 125 kg",
    "Rahmenform": "Gravel",
    "Herstellerfarbe": "liquid copper matt"
  },
  "rawFeatures": [
    "0% Finanzierung ab 99,20 € möglich",
    "Dienstrad-Leasing möglich",
    "14 Tage kostenloses Rückgaberecht",
    "Fahrrad vollständig montiert und mit wenigen Handgriffen fahrbereit",
    "Mit einem Gravel-Rad ist man ähnlich wie mit einem Rennrad schnell auf Asphalt unterwegs. Im Gegensatz zum Renner kann man jedoch auch auf unbefestigten Wegen fahren. Dadurch sind einem beim Planen einer Fahrradtour kaum Grenzen gesetzt. Der Claris Antrieb von Shimano sorgt für flüssige Gangwechsel und trotzt jeglichen Witterungsbedingungen.",
    "Shimano Claris 16-Gang Kettenschaltung",
    "Shimano mechanische Scheibenbremsen",
    "Schwalbe CX Comp Bereifung",
    "Aufgrund von Engpässen und Verzögerungen in den weltweiten Lieferketten kann es vorkommen, dass der Hersteller vereinzelt Komponenten der Originalspezifikationen durch mindestens gleichwertige oder sogar höherwertige Bauteile ersetzt hat. Das gelieferte Fahrrad kann in Einzelfällen von den Abbildungen abweichen.",
    "Das Grinder 1 eignet sich für ausgedehnte Fahrradtouren ebenso so wie für die alltägliche Anwendung. Die mechanischen Scheibenbremsen überzeugen durch kraftvolle und dennoch gut dosierbare Bremsvorgänge. Zudem punktet das Fahrrad mit einem eleganten Design. Die Schwalbe CX Comp Reifen sind mit einem Pannenschutz ausgestattet. Dieser ermöglicht es auch auf unbefestigten Wegen richtig Gas zu geben."
  ],
  "rawSizes": [
    {
      "rawSize": "55 cm",
      "size": "55",
      "sizeCm": 55,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "availabilityText": "1 of 1 sizes orderable",
  "fetchedAt": "2026-09-19T06:32:11.670Z",
  "sourceMeta": {
    "savingBadge": "307 € gespartauf UVP",
    "deliveryWindows": [
      "55 cm 4-8 Werktage"
    ]
  }
}

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