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Stevens Tonga 27.5" schwarz

bikes-de:stevens-tonga-27-5-2021 · source URL · confidence 0.83 · GTIN 4045985025378, 4045985025385

Eligibility

Can win a band.

Size decisions

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

Warnings

• info single-size-only — Only one size is in stock ((14")).
• info wheel-material-unknown — Wheel material could not be established.
• info mixed-groupset — Not a uniform groupset: {"shifters":"Acera","rearDerailleur":"Alivio","frontDerailleur":"Altus"}. Ranked on the shifting level, with a penalty.

Score breakdown

{
  "frameScore": 11,
  "drivetrainScore": 3,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 0,
  "weightAdjustment": -0.3,
  "equipmentValue": 18.7,
  "notes": [
    "Shimano Altus = 7.",
    "Mixed groupset, but no crank or cassette below the family it is ranked as: no penalty.",
    "9-speed -4.",
    "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 mtb-hardtail.",
    "14.6 kg vs 14.4 kg mtb-hardtail reference = -0.3.",
    "Fork series not stated: scored at the bottom of the fork ladder rather than assumed.",
    "Brake series \"basic\" +0."
  ],
  "marketPrice": 578,
  "valueScore": 0.772,
  "savingsVsMarket": -171
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [
    "weightKg"
  ],
  "rejected": [],
  "notes": "The build uses multiple Shimano families (Altus, Alivio, Acera) so groupsetFamily is left null and mixedGroupset is true. Wheel rim model (Oxygen RM-M19) does not state material explicitly in the source, so wheelMaterial and wheelTier are null. The source does not mention electronic shifting or a power meter explicitly.",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Rahmenmaterial lt. Hersteller: Aluminium 6061",
      "confidence": 0.9
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Schaltwerk: Shimano Alivio Shadow RD-M3100-SGS, 18fach",
      "confidence": 0.9
    },
    "groupsetFamily": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "electronicShifting": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "speeds": {
      "value": "18",
      "evidence": "Anzahl Gänge: 18",
      "confidence": 0.9
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Umwerfer: Shimano Altus FD-M2020-TS\nSchaltwerk: Shimano Alivio Shadow RD-M3100-SGS, 18fach\nSchalthebel: Shimano Acera SL-M3000/3010",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremsen: Hydraulische Scheibenbremse",
      "confidence": 0.9
    },
    "weightKg": {
      "value": "14.6",
      "evidence": "Gewicht: 14.6",
      "confidence": 0.9
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "The build uses multiple Shimano families (Altus, Alivio, Acera) so groupsetFamily is left null and mixedGroupset is true. Wheel rim model (Oxygen RM-M19) does not state material explicitly in the source, so wheelMaterial and wheelTier are null. The source does not mention electronic shifting or a power meter explicitly."
  }
}

Normalized record

{
  "id": "bikes-de:stevens-tonga-27-5-2021",
  "retailer": "bikes-de",
  "retailerProductId": "stevens-tonga-27-5-2021",
  "productUrl": "https://www.bikes.de/shop/fahrraeder/marke.stevens/stevens-tonga-27-5-2021/",
  "brand": "Stevens",
  "model": "Tonga 27.5\" schwarz",
  "modelYear": 2021,
  "category": "mtb",
  "categoryBasis": "route",
  "sourceCategory": "mtb",
  "price": 749,
  "originalPrice": null,
  "currency": "EUR",
  "discountPercent": null,
  "frameMaterial": "aluminium",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "Altus",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 9,
  "mixedGroupset": true,
  "groupsetComponents": {
    "shifters": "Acera",
    "rearDerailleur": "Alivio",
    "frontDerailleur": "Altus"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano FC-MT210-2, 36-22 Z.",
  "cassette": "Shimano CS-HG200, 9fach",
  "brakes": "hydraulic-disc",
  "brakePistons": 2,
  "brakeTier": "basic",
  "suspension": "front",
  "fork": {
    "make": "SR Suntour",
    "line": "XCM",
    "tier": "unknown",
    "travelMm": 100
  },
  "rearShock": null,
  "dropperPost": false,
  "beltDrive": false,
  "hubDynamo": null,
  "rack": null,
  "mudguards": null,
  "chaincase": null,
  "kickstand": null,
  "lighting": null,
  "wheelSize": "27.5",
  "wheelset": "Oxygen RM-M19, 19 x 584 | 19 x 622",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Schwalbe Smart Sam Active-Line, 57-584 | 622",
  "weightKg": 14.6,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "(14\")",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": 749
    },
    {
      "rawSize": "(16\")",
      "size": null,
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": null
    }
  ],
  "seller": null,
  "availability": "limited",
  "gtins": [
    "4045985025378",
    "4045985025385"
  ],
  "imageUrl": "https://bikes-opt.b-cdn.net/stevens/2021/42128_01.jpg",
  "rawTitle": "Stevens Tonga 27.5\" schwarz",
  "fetchedAt": "2026-09-19T05:58:21.516Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "single-size-only",
      "message": "Only one size is in stock ((14\")).",
      "severity": "info"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    },
    {
      "code": "mixed-groupset",
      "message": "Not a uniform groupset: {\"shifters\":\"Acera\",\"rearDerailleur\":\"Alivio\",\"frontDerailleur\":\"Altus\"}. Ranked on the shifting level, with a penalty.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Rahmenmaterial lt. Hersteller": "Aluminium 6061",
  "Gabel": "SR Suntour XCM HLO",
  "Gabel Federweg (mm)": "100",
  "Schaltungstyp": "Kettenschaltung",
  "Anzahl Gänge": "18",
  "Umwerfer": "Shimano Altus FD-M2020-TS",
  "Schaltwerk": "Shimano Alivio Shadow RD-M3100-SGS, 18fach",
  "Schalthebel": "Shimano Acera SL-M3000/3010",
  "Zahnkranz": "Shimano CS-HG200, 9fach",
  "Bremsen": "Hydraulische Scheibenbremse",
  "Bremse": "Shimano BR-MT200",
  "Bremshebel": "Shimano BL-MT200",
  "Laufradgröße": "27,5 Zoll",
  "Reifen": "Schwalbe Smart Sam Active-Line, 57-584 | 622",
  "Felgen": "Oxygen RM-M19, 19 x 584 | 19 x 622",
  "Kurbelsatz": "Shimano FC-MT210-2, 36-22 Z.",
  "Pedale": "MTB Flatpedal",
  "Innenlager": "BSA 73 mm",
  "Lenker": "Oxygen Driver 700 mm",
  "Steuersatz": "STEVENS MTB 1 1/8\"",
  "Sattel": "Oxygen Raceline",
  "Sattelstütze": "Oxygen Driver",
  "Straßenzulassung": "Ja",
  "Marke": "Stevens",
  "EAN": "4045985025378",
  "Hersteller Artikelnummer": "221011163",
  "Modellserie Bezeichnung": "Tonga 27.5\"",
  "Rahmenform lt. Hersteller": "Diamant",
  "Markenfarbe": "stealth black",
  "Rahmenhöhe": "(14\")",
  "Jahr": "2021",
  "Zielgruppe": "Damen; Herren",
  "Gewicht": "14.6",
  "Zulässiges Gesamtgewicht": "115"
}

Raw adapter output

{
  "retailer": "bikes-de",
  "retailerProductId": "stevens-tonga-27-5-2021",
  "productUrl": "https://www.bikes.de/shop/fahrraeder/marke.stevens/stevens-tonga-27-5-2021/",
  "extractionMethod": "server-html",
  "sourceCategory": "mtb",
  "rawTitle": "Stevens Tonga 27.5\" schwarz",
  "rawBrand": "Stevens",
  "price": 749,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://bikes-opt.b-cdn.net/stevens/2021/42128_01.jpg",
  "rawSpecifications": {
    "Rahmenmaterial lt. Hersteller": "Aluminium 6061",
    "Gabel": "SR Suntour XCM HLO",
    "Gabel Federweg (mm)": "100",
    "Schaltungstyp": "Kettenschaltung",
    "Anzahl Gänge": "18",
    "Umwerfer": "Shimano Altus FD-M2020-TS",
    "Schaltwerk": "Shimano Alivio Shadow RD-M3100-SGS, 18fach",
    "Schalthebel": "Shimano Acera SL-M3000/3010",
    "Zahnkranz": "Shimano CS-HG200, 9fach",
    "Bremsen": "Hydraulische Scheibenbremse",
    "Bremse": "Shimano BR-MT200",
    "Bremshebel": "Shimano BL-MT200",
    "Laufradgröße": "27,5 Zoll",
    "Reifen": "Schwalbe Smart Sam Active-Line, 57-584 | 622",
    "Felgen": "Oxygen RM-M19, 19 x 584 | 19 x 622",
    "Kurbelsatz": "Shimano FC-MT210-2, 36-22 Z.",
    "Pedale": "MTB Flatpedal",
    "Innenlager": "BSA 73 mm",
    "Lenker": "Oxygen Driver 700 mm",
    "Steuersatz": "STEVENS MTB 1 1/8\"",
    "Sattel": "Oxygen Raceline",
    "Sattelstütze": "Oxygen Driver",
    "Straßenzulassung": "Ja",
    "Marke": "Stevens",
    "EAN": "4045985025378",
    "Hersteller Artikelnummer": "221011163",
    "Modellserie Bezeichnung": "Tonga 27.5\"",
    "Rahmenform lt. Hersteller": "Diamant",
    "Markenfarbe": "stealth black",
    "Rahmenhöhe": "(14\")",
    "Jahr": "2021",
    "Zielgruppe": "Damen; Herren",
    "Gewicht": "14.6",
    "Zulässiges Gesamtgewicht": "115"
  },
  "rawFeatures": [],
  "rawSizes": [
    {
      "rawSize": "(14\")",
      "size": null,
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": 749
    },
    {
      "rawSize": "(16\")",
      "size": null,
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": null
    }
  ],
  "availabilityText": "1 of 2 frame sizes offered for shipping by a bikes.de dealer",
  "fetchedAt": "2026-09-19T05:58:21.516Z",
  "sourceMeta": {
    "dealers": [
      "Stadtrad 089 GmbH"
    ],
    "listingRows": 1,
    "articleNumbers": [
      "42128"
    ],
    "skus": [
      "4045985025385"
    ],
    "leafCategory": "MTB Hardtails"
  }
}

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