Crust 27.5" - black

bike-mailorder:9617133699336 · source URL · confidence 0.58 · GTIN 2019090009617, 2019090009624, 2019090009631

Eligibility

Cannot win: category is mtb, not city; not-a-city-bike; confidence 0.58 below 0.75

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
S	S	—	unknown	unsupported	yes	€589	—
M	M	—	unknown	unsupported	yes	€699	—
L	L	—	unknown	unsupported	no	€699	—

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

—

unknown

unsupported

yes

€589

—

unknown

unsupported

yes

€699

—

unknown

unsupported

€699

—

mapping	unsupported
reason	"S" is a letter size and there is no reviewed NS Bikes equivalence to convert it.

mapping

unsupported

reason

"S" is a letter size and there is no reviewed NS Bikes equivalence to convert it.

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

Identity

Canonical configuration: NS Bikes | Crust 27.5"
Confidence: medium

brand exact (NS Bikes)
model normalized to "crust 27.5"
groupset family unidentified on every listing
model year unavailable on every listing
2 listings across 1 retailer
downgraded to medium: no shared GTIN, and no listing states a model year

retailer	price	sizes in stock
Bike-Mailorder	€589	S, M	debug
Bike-Mailorder	€654,25	none	debug

retailer

price

sizes in stock

Bike-Mailorder

€589

S, M

debug

Bike-Mailorder

€654,25

none

debug

Provenance — why we believe each fact

field source evidence

brand retailer:bike-mailorder / parse NS Bikes

model retailer:bike-mailorder / derived Crust 27.5" - black

category retailer:bike-mailorder / parse 27.5

frameMaterial retailer:bike-mailorder / parse Stahl

suspension retailer:bike-mailorder / derived no suspension fork and no rear shock on a drop-bar listing

fork retailer:bike-mailorder / dictionary NS Bikes CroMo-Stahl mit Pizza Rack

dropperPost retailer:bike-mailorder / derived seatpost row "Kalloy, 26mm" names no dropper, in a 22-field spec table

wheelSize retailer:bike-mailorder / parse 27.5

weightKg retailer:bike-mailorder / parse Gewicht (kg): ca. 12.3 kg *Größe M

powerMeter retailer:bike-mailorder / derived absent from a 22-field spec table

availability retailer:bike-mailorder / derived 2 of 3 variants in stock

brakes ai / ai (0.9) Tektro MD-M280 Aries mechanical disc brake, 160mm

field	source	evidence
brand	`retailer:bike-mailorder` / parse	NS Bikes
model	`retailer:bike-mailorder` / derived	Crust 27.5" - black
category	`retailer:bike-mailorder` / parse	27.5
frameMaterial	`retailer:bike-mailorder` / parse	Stahl
suspension	`retailer:bike-mailorder` / derived	no suspension fork and no rear shock on a drop-bar listing
fork	`retailer:bike-mailorder` / dictionary	NS Bikes CroMo-Stahl mit Pizza Rack
dropperPost	`retailer:bike-mailorder` / derived	seatpost row "Kalloy, 26mm" names no dropper, in a 22-field spec table
wheelSize	`retailer:bike-mailorder` / parse	27.5
weightKg	`retailer:bike-mailorder` / parse	Gewicht (kg): ca. 12.3 kg *Größe M
powerMeter	`retailer:bike-mailorder` / derived	absent from a 22-field spec table
availability	`retailer:bike-mailorder` / derived	2 of 3 variants in stock
brakes	`ai` / ai (0.9)	Tektro MD-M280 Aries mechanical disc brake, 160mm

Warnings

blocking not-a-city-bike — Classified as mtb.
high groupset-unknown — Groupset could not be established.
info wheel-material-unknown — Wheel material could not be established.

Score breakdown

{
  "frameScore": 13,
  "drivetrainScore": 0,
  "wheelScore": 5,
  "extrasScore": 1,
  "suspensionScore": 0,
  "weightAdjustment": 4,
  "equipmentValue": 23,
  "notes": [
    "Groupset not identified: 0 drivetrain points.",
    "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\" +1.",
    "12.3 kg vs 16.2 kg city reference = +4."
  ],
  "marketPrice": 693,
  "valueScore": 1.177,
  "savingsVsMarket": 104
}

AI normalization

{
  "requested": [
    "groupsetFamily",
    "wheelMaterial",
    "wheelTier",
    "brakes"
  ],
  "applied": [
    "brakes"
  ],
  "rejected": [],
  "notes": "This is a singlespeed city bike with a steel frame and Tektro MD-M280 mechanical disc brakes. No drivetrain brand/family is specified in the source; wheel material and tier are not stated.",
  "raw": {
    "frameMaterial": {
      "value": "steel",
      "evidence": "NS Bikes Stahl",
      "confidence": 0.9
    },
    "groupsetBrand": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "groupsetFamily": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "electronicShifting": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "speeds": {
      "value": "1",
      "evidence": "Single Speed",
      "confidence": 0.9
    },
    "mixedGroupset": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "brakes": {
      "value": "mechanical-disc",
      "evidence": "Tektro MD-M280 Aries mechanical disc brake, 160mm",
      "confidence": 0.9
    },
    "weightKg": {
      "value": "12.3",
      "evidence": "ca. 12.3 kg",
      "confidence": 0.9
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "notes": "This is a singlespeed city bike with a steel frame and Tektro MD-M280 mechanical disc brakes. No drivetrain brand/family is specified in the source; wheel material and tier are not stated."
  }
}

Normalized record

{
  "id": "bike-mailorder:9617133699336",
  "retailer": "bike-mailorder",
  "retailerProductId": "9617133699336",
  "productUrl": "https://www.bike-mailorder.com/products/ns-bikes-crust-27-5-black",
  "brand": "NS Bikes",
  "model": "Crust 27.5\"",
  "modelYear": null,
  "category": "mtb",
  "categoryBasis": "stated",
  "sourceCategory": "city",
  "price": 589,
  "originalPrice": 999,
  "currency": "EUR",
  "discountPercent": 41,
  "frameMaterial": "steel",
  "frameModel": "NS Bikes Stahl",
  "frameTier": null,
  "groupsetBrand": null,
  "groupsetFamily": null,
  "groupsetGeneration": null,
  "electronicShifting": null,
  "speeds": null,
  "mixedGroupset": null,
  "groupsetComponents": null,
  "groupsetTierSpread": 0,
  "crank": "Lasco 170mm, 42T",
  "cassette": "18T",
  "brakes": "mechanical-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": null,
  "wheelSize": "27.5",
  "wheelset": "NS Bikes 27.5\" 32h | NS Bikes 9x100mm, bolt-on, (loose ball) | NS Bikes Single Speed 10x135, bolt-on, (loose ball)",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": null,
  "weightKg": 12.3,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 589,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 699,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": 699,
      "preorder": false,
      "deliveryNote": null
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [
    "2019090009617",
    "2019090009624",
    "2019090009631"
  ],
  "imageUrl": "https://cdn.shopify.com/s/files/1/0901/7085/1592/files/ns-bikes-crust-275-black-1.jpg?v=1736980404",
  "rawTitle": "Crust 27.5\" - black",
  "fetchedAt": "2026-09-19T05:19:03.112Z",
  "normalizationConfidence": 0.58,
  "warnings": [
    {
      "code": "not-a-city-bike",
      "message": "Classified as mtb.",
      "severity": "blocking"
    },
    {
      "code": "groupset-unknown",
      "message": "Groupset could not be established.",
      "severity": "high"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Rahmen": "NS Bikes Stahl",
  "Gabel": "NS Bikes CroMo-Stahl mit Pizza Rack",
  "Kassette": "18T",
  "Vorderbremse": "Tektro MD-M280 Aries mechanical disc brake, 160mm",
  "Hinterbremse": "Tektro MD-M280 Aries mechanical disc brake, 160mm",
  "Kurbel": "Lasco 170mm, 42T",
  "Sattelstütze": "Kalloy, 26mm",
  "Sattel": "Selle Italia X Superflow",
  "Lenker": "NS Bikes 31.8, 700mm",
  "Vorbau": "NS Bikes Rag+ 31.8, 100mm",
  "Nabe vorne": "NS Bikes 9x100mm, bolt-on, (loose ball)",
  "Nabe hinten": "NS Bikes Single Speed 10x135, bolt-on, (loose ball)",
  "Felgen": "NS Bikes 27.5\" 32h",
  "Reifen vorne/hinten": "WTB Horizon 650x47B",
  "Tretlager": "TH, BSA, square, 68mm",
  "Steuersatz": "NS 1 & 1/8\" gedichtete Lager",
  "Griffe": "NS Bikes Hold Fast Unlocked",
  "Speichen": "Spokes 14mm nipples",
  "Kette": "PYC P510H, Single Speed",
  "Pedale": "NS Bikes Nylon",
  "Gewicht (kg)": "ca. 12.3 kg *Größe M",
  "Disziplin": "Bike, bike outlet, Bikes, Citybikes, clearance-bikes, clearance26, clearance262, Fixies & Singlespeed Bikes, Herren oder Unisex, OvS, Spedition, SSV, SSV-Bikes"
}

Raw adapter output

{
  "retailer": "bike-mailorder",
  "retailerProductId": "9617133699336",
  "productUrl": "https://www.bike-mailorder.com/products/ns-bikes-crust-27-5-black",
  "extractionMethod": "public-json-api",
  "sourceCategory": "city",
  "rawTitle": "Crust 27.5\" - black",
  "rawBrand": "NS Bikes",
  "price": 589,
  "originalPrice": 999,
  "currency": "EUR",
  "imageUrl": "https://cdn.shopify.com/s/files/1/0901/7085/1592/files/ns-bikes-crust-275-black-1.jpg?v=1736980404",
  "rawSpecifications": {
    "Rahmen": "NS Bikes Stahl",
    "Gabel": "NS Bikes CroMo-Stahl mit Pizza Rack",
    "Kassette": "18T",
    "Vorderbremse": "Tektro MD-M280 Aries mechanical disc brake, 160mm",
    "Hinterbremse": "Tektro MD-M280 Aries mechanical disc brake, 160mm",
    "Kurbel": "Lasco 170mm, 42T",
    "Sattelstütze": "Kalloy, 26mm",
    "Sattel": "Selle Italia X Superflow",
    "Lenker": "NS Bikes 31.8, 700mm",
    "Vorbau": "NS Bikes Rag+ 31.8, 100mm",
    "Nabe vorne": "NS Bikes 9x100mm, bolt-on, (loose ball)",
    "Nabe hinten": "NS Bikes Single Speed 10x135, bolt-on, (loose ball)",
    "Felgen": "NS Bikes 27.5\" 32h",
    "Reifen vorne/hinten": "WTB Horizon 650x47B",
    "Tretlager": "TH, BSA, square, 68mm",
    "Steuersatz": "NS 1 & 1/8\" gedichtete Lager",
    "Griffe": "NS Bikes Hold Fast Unlocked",
    "Speichen": "Spokes 14mm nipples",
    "Kette": "PYC P510H, Single Speed",
    "Pedale": "NS Bikes Nylon",
    "Gewicht (kg)": "ca. 12.3 kg *Größe M",
    "Disziplin": "Bike, bike outlet, Bikes, Citybikes, clearance-bikes, clearance26, clearance262, Fixies & Singlespeed Bikes, Herren oder Unisex, OvS, Spedition, SSV, SSV-Bikes"
  },
  "rawFeatures": [
    "Das neue Crust ist ein vielfältiges Singlespeed City Bike für den täglichen Gebrauch, egal ob beim Pendeln oder zum Einkaufen. Dank der breiten, schnellen Reifen, dem soliden Stahl-Rahmen, starken Scheibenbremsen sowie dem stylischen und praktischen Pizza Rack bist du mit dem Crust für alle Belangen der Stadt ausgerüstet! Ausstattung: Rahmen: NS Bikes Stahl Gabel: NS Bikes CroMo-Stahl mit Pizza Rack Kassette: 18T Vorderbremse: Tektro MD-M280 Aries mechanical disc brake, 160mm Hinterbremse: Tektro MD-M280 Aries mechanical disc brake, 160mm Kurbel: Lasco 170mm, 42T Sattelstütze: Kalloy, 26mm Sattel: Selle Italia X Superflow Lenker: NS Bikes 31.8, 700mm Vorbau: NS Bikes Rag+ 31.8, 100mm Nabe vorne: NS Bikes 9x100mm, bolt-on, (loose ball) Nabe hinten: NS Bikes Single Speed 10x135, bolt-on, (loose ball) Felgen: NS Bikes 27.5\" 32h Reifen vorne/hinten: WTB Horizon 650x47B Tretlager: TH, BSA, square, 68mm Steuersatz: NS 1 & 1/8\" gedichtete Lager Griffe: NS Bikes Hold Fast Unlocked Speichen: Spokes 14mm nipples Kette: PYC P510H, Single Speed Pedale: NS Bikes Nylon Gewicht (kg): ca. 12.3 kg *Größe M",
    "* In seltenen Fällen liefern unsere Hersteller Fahrräder mit geänderten, aber gleichwertigen Komponenten."
  ],
  "rawSizes": [
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 589,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 699,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": 699,
      "preorder": false,
      "deliveryNote": null
    }
  ],
  "availabilityText": "2 of 3 variants in stock",
  "fetchedAt": "2026-09-19T05:19:03.112Z",
  "sourceMeta": {
    "shopifyProductId": 9617133699336,
    "handle": "ns-bikes-crust-27-5-black",
    "productType": "Bike",
    "tags": [
      "Bike",
      "bike outlet",
      "Bikes",
      "Citybikes",
      "clearance-bikes",
      "clearance26",
      "clearance262",
      "Fixies & Singlespeed Bikes",
      "Herren oder Unisex",
      "OvS",
      "Spedition",
      "SSV",
      "SSV-Bikes"
    ],
    "skus": [
      "2019090009617",
      "2019090009624",
      "2019090009631"
    ],
    "articleNumbers": [
      "N09010038.2",
      "N09010038.1",
      "N09010038"
    ],
    "stockSource": "product-inventory",
    "backorderNote": "Beim Lieferanten bestellt",
    "untrackedVariants": 0,
    "variantsNotInStockArray": 0,
    "bWareVariantsRemoved": []
  }
}

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