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Bulls Grinder 1 Gravel Bike 28" grau

zweirad-stadler:bulls-grinder-1-gravel-bike-28-grau · source URL · confidence 0.83

Eligibility

Can win a band.

Size decisions

A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 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 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 rims are listed as 'DDM-2' (unrecognised house/model name); the source does not state rim material or wheel model tier. No complete-bike weight or explicit statement about a power meter is given.",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Material: Aluminium",
      "confidence": 0.9
    },
    "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": 0.8
    },
    "speeds": {
      "value": "16",
      "evidence": "Gänge: 16-Gang",
      "confidence": 0.9
    },
    "mixedGroupset": {
      "value": "false",
      "evidence": "Schaltwerk: Shimano Claris\nUmwerfer: Shimano Claris\nSchalthebel: Shimano Claris ST-R2000\nKurbel: Shimano Claris FC-RS200 46/34T",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "wheelTier": {
      "value": null,
      "evidence": "Felgen: DDM-2",
      "confidence": 0.4
    },
    "brakes": {
      "value": "mechanical-disc",
      "evidence": "Mechanische Scheibenbremsen",
      "confidence": 0.9
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "notes": "Wheel rims are listed as 'DDM-2' (unrecognised house/model name); the source does not state rim material or wheel model tier. No complete-bike weight or explicit statement about a power meter is given."
  }
}

Normalized record

{
  "id": "zweirad-stadler:bulls-grinder-1-gravel-bike-28-grau",
  "retailer": "zweirad-stadler",
  "retailerProductId": "bulls-grinder-1-gravel-bike-28-grau",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1-gravel-bike-28-grau.html",
  "brand": "Bulls",
  "model": "Grinder 1 Gravel Bike 28\" grau",
  "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 46/34T",
  "cassette": "Shimano CS-HG50-8, 8-PCS, 11-34T",
  "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": true,
  "wheelSize": "28",
  "wheelset": "DDM-2 | Center Lock mit Schnellspanner",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Schwalbe CX Comp K-Guard",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "47 cm",
      "size": "47",
      "sizeCm": 47,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    },
    {
      "rawSize": "51 cm",
      "size": "51",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [],
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-grinder-1-grau-gravelbike-herren-133681-a.jpg",
  "rawTitle": "Bulls Grinder 1 Gravel Bike 28\" grau",
  "fetchedAt": "2026-09-19T06:32:16.302Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Material": "Aluminium",
  "Farbe": "grau",
  "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 46/34T",
  "Kassette": "Shimano CS-HG50-8, 8-PCS, 11-34T",
  "Kette": "KMC, HG-40",
  "Lenker": "Gravel S",
  "Griffe": "Comfortgriptape 3 mm",
  "Vorbau": "MTB-S, CCS Slot Mount ready",
  "Sattelstütze": "Bulls Aluminium",
  "Sattel": "Bulls Gravel",
  "Laufradgröße": "28\"",
  "Felgen": "DDM-2",
  "Reifen": "Schwalbe CX Comp K-Guard",
  "Nabe vorne": "Center Lock mit Schnellspanner",
  "Scheinwerfer": "Monkey Link Recharge (Beleuchtung nicht im Lieferumfang enthalten)",
  "Rücklicht": "Monkey Link Recharge (Beleuchtung nicht im Lieferumfang enthalten)",
  "zul. Gesamtgewicht": "max. 125 kg",
  "Rahmenform": "Gravel",
  "Herstellerfarbe": "quantum silver"
}

Raw adapter output

{
  "retailer": "zweirad-stadler",
  "retailerProductId": "bulls-grinder-1-gravel-bike-28-grau",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1-gravel-bike-28-grau.html",
  "extractionMethod": "server-html",
  "sourceCategory": "gravel",
  "rawTitle": "Bulls Grinder 1 Gravel Bike 28\" grau",
  "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-grau-gravelbike-herren-133681-a.jpg",
  "rawSpecifications": {
    "Material": "Aluminium",
    "Farbe": "grau",
    "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 46/34T",
    "Kassette": "Shimano CS-HG50-8, 8-PCS, 11-34T",
    "Kette": "KMC, HG-40",
    "Lenker": "Gravel S",
    "Griffe": "Comfortgriptape 3 mm",
    "Vorbau": "MTB-S, CCS Slot Mount ready",
    "Sattelstütze": "Bulls Aluminium",
    "Sattel": "Bulls Gravel",
    "Laufradgröße": "28\"",
    "Felgen": "DDM-2",
    "Reifen": "Schwalbe CX Comp K-Guard",
    "Nabe vorne": "Center Lock mit Schnellspanner",
    "Scheinwerfer": "Monkey Link Recharge (Beleuchtung nicht im Lieferumfang enthalten)",
    "Rücklicht": "Monkey Link Recharge (Beleuchtung nicht im Lieferumfang enthalten)",
    "zul. Gesamtgewicht": "max. 125 kg",
    "Rahmenform": "Gravel",
    "Herstellerfarbe": "quantum silver"
  },
  "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 ist das Gravelbike auch für unwegsames Gelände geeignet. Der Claris Antrieb von Shimano sorgt beim Bulls Grinder 1 für flüssigen Gangwechsel.",
    "Shimano Claris 16-Gang Kettenschaltung",
    "Mechanische Scheibenbremsen",
    "MonkeyLink Recharge Aufnahme zur Anbringung von Frontlampe und Rücklicht (nicht enthalten)",
    "Zahlreiche Anschraubpunkte für Gepäck und Zubehör"
  ],
  "rawSizes": [
    {
      "rawSize": "47 cm",
      "size": "47",
      "sizeCm": 47,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    },
    {
      "rawSize": "51 cm",
      "size": "51",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "7-14 Werktage"
    }
  ],
  "availabilityText": "2 of 2 sizes orderable",
  "fetchedAt": "2026-09-19T06:32:16.302Z",
  "sourceMeta": {
    "savingBadge": "307 € gespartauf UVP",
    "deliveryWindows": [
      "47 cm 7-14 Werktage",
      "51 cm 7-14 Werktage"
    ]
  }
}

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