Cannondale Topstone Carbon Lefty 3

boc:7499303944366 · source URL · confidence 0.83

Eligibility

Cannot win: availability is out-of-stock; no size confirmed in stock

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
41 CM	—	41 cm	exact scale	stated by the retailer	no	€4.399	41 CM
46 CM	—	46 cm	exact scale	stated by the retailer	no	€4.399	46 CM
51 CM	—	51 cm	exact scale	stated by the retailer	no	€4.399	51 CM
55 CM	—	55 cm	exact scale	stated by the retailer	no	€4.399	55 CM
60 CM	—	60 cm	exact scale	stated by the retailer	no	€4.399	60 CM

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

41 CM

—

41 cm

exact scale

stated by the retailer

€4.399

41 CM

46 CM

—

46 cm

exact scale

stated by the retailer

€4.399

46 CM

51 CM

—

51 cm

exact scale

stated by the retailer

€4.399

51 CM

55 CM

—

55 cm

exact scale

stated by the retailer

€4.399

55 CM

60 CM

—

60 cm

exact scale

stated by the retailer

€4.399

60 CM

A shopper asking for: 54 → 55 CM fits but sold out · 56 → 55 CM fits but sold out · 58 → nothing compatible · 60 → 60 CM fits but sold out

Identity

Canonical configuration: Cannondale | Topstone Lefty 3 | GRX | 2021
Confidence: high

brand exact (Cannondale)
model normalized to "topstone lefty 3"
groupset family exact (GRX)
model year exact (2021)
2 listings across 1 retailer

retailer	price	sizes in stock
B.O.C.	€4.399	none	debug
B.O.C.	€4.399	none	debug

retailer

price

sizes in stock

B.O.C.

€4.399

none

debug

B.O.C.

€4.399

none

debug

Provenance — why we believe each fact

field source evidence

brand retailer:boc / parse CANNONDALE

model retailer:boc / derived Cannondale Topstone Carbon Lefty 3

modelYear retailer:boc / parse Modelljahr: 2021

category retailer:boc / parse Topstone

frameMaterial retailer:boc / parse Carbon

groupsetFamily retailer:boc / dictionary Shimano GRX 600, 11-speed || Shimano GRX 800 Wide

electronicShifting retailer:boc / derived Shimano GRX 600, 11-speed || Shimano GRX 800 Wide

speeds retailer:boc / parse 11-speed

brakes retailer:boc / parse hydraulic disc

suspension retailer:boc / derived suspension fork "All-New Lefty Oliver, 30mm travel," and no rear shock in a 19-field spec table

fork retailer:boc / parse All-New Lefty Oliver, 30mm travel,

dropperPost retailer:boc / derived seatpost row "Cannondale 2, UD Carbon, 27.2 x 350mm" names no dropper, in a 19-field spec table

wheelSize retailer:boc / parse 27.5

powerMeter retailer:boc / derived absent from a 19-field spec table

availability retailer:boc / derived all variants sold out

field	source	evidence
brand	`retailer:boc` / parse	CANNONDALE
model	`retailer:boc` / derived	Cannondale Topstone Carbon Lefty 3
modelYear	`retailer:boc` / parse	Modelljahr: 2021
category	`retailer:boc` / parse	Topstone
frameMaterial	`retailer:boc` / parse	Carbon
groupsetFamily	`retailer:boc` / dictionary	Shimano GRX 600, 11-speed \|\| Shimano GRX 800 Wide
electronicShifting	`retailer:boc` / derived	Shimano GRX 600, 11-speed \|\| Shimano GRX 800 Wide
speeds	`retailer:boc` / parse	11-speed
brakes	`retailer:boc` / parse	hydraulic disc
suspension	`retailer:boc` / derived	suspension fork "All-New Lefty Oliver, 30mm travel," and no rear shock in a 19-field spec table
fork	`retailer:boc` / parse	All-New Lefty Oliver, 30mm travel,
dropperPost	`retailer:boc` / derived	seatpost row "Cannondale 2, UD Carbon, 27.2 x 350mm" names no dropper, in a 19-field spec table
wheelSize	`retailer:boc` / parse	27.5
powerMeter	`retailer:boc` / derived	absent from a 19-field spec table
availability	`retailer:boc` / derived	all variants sold out

Warnings

info wheel-material-unknown — Wheel material could not be established.

Score breakdown

{
  "frameScore": 26,
  "drivetrainScore": 20,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 51,
  "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": 2660,
  "valueScore": 0.605,
  "savingsVsMarket": -1739
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "Wheel material and wheelset model are not stated (only wheel size and tyre models are given), so wheelMaterial and wheelTier cannot be determined. Complete bike weight is not provided. Electronic shifting is not mentioned explicitly. Mixed groupset set to true because shifters/derailleur are Shimano GRX while the crank is a Cannondale unit, as shown in the evidence.",
  "raw": {
    "frameMaterial": {
      "value": "carbon",
      "evidence": "Rahmenmaterial: Carbon",
      "confidence": 0.9
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Shimano GRX",
      "confidence": 0.9
    },
    "groupsetFamily": {
      "value": "GRX",
      "evidence": "Shimano GRX",
      "confidence": 0.9
    },
    "electronicShifting": {
      "value": null,
      "evidence": null,
      "confidence": 0.3
    },
    "speeds": {
      "value": "11",
      "evidence": "Anzahl Gänge: 11",
      "confidence": 0.9
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Schalthebel: Shimano GRX 600, 11-speed\nSchaltwerk: Shimano GRX 800 Wide\nKurbelgarnitur: Cannondale 1, BB30a, OPI SpideRing, 40T",
      "confidence": 0.8
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.2
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0.2
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremsen: Shimano GRX 600 hydraulic disc",
      "confidence": 0.9
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0.2
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.2
    },
    "notes": "Wheel material and wheelset model are not stated (only wheel size and tyre models are given), so wheelMaterial and wheelTier cannot be determined. Complete bike weight is not provided. Electronic shifting is not mentioned explicitly. Mixed groupset set to true because shifters/derailleur are Shimano GRX while the crank is a Cannondale unit, as shown in the evidence."
  }
}

Normalized record

{
  "id": "boc:7499303944366",
  "retailer": "boc",
  "retailerProductId": "7499303944366",
  "productUrl": "https://boc24.de/products/cannondale-topstone-carbon-lefty-3",
  "brand": "Cannondale",
  "model": "Topstone Carbon Lefty 3",
  "modelYear": 2021,
  "category": "gravel",
  "categoryBasis": "stated",
  "sourceCategory": "gravel",
  "price": 4399,
  "originalPrice": null,
  "currency": "EUR",
  "discountPercent": null,
  "frameMaterial": "carbon",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "GRX",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 11,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "GRX",
    "rearDerailleur": "GRX"
  },
  "groupsetTierSpread": 0,
  "crank": "Cannondale 1, BB30a, OPI SpideRing, 40T",
  "cassette": "Shimano SLX, 11-42, 11-speed",
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "front",
  "fork": {
    "make": null,
    "line": null,
    "tier": "unknown",
    "travelMm": null
  },
  "rearShock": null,
  "dropperPost": false,
  "beltDrive": null,
  "hubDynamo": null,
  "rack": null,
  "mudguards": null,
  "chaincase": null,
  "kickstand": null,
  "lighting": null,
  "wheelSize": "27.5",
  "wheelset": null,
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "WTB Byway TCS Light, 650 x 47c, tubeless ready",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "41 CM",
      "size": null,
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "46 CM",
      "size": "46",
      "sizeCm": 46,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "51 CM",
      "size": "51",
      "sizeCm": 51,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "55 CM",
      "size": "55",
      "sizeCm": 55,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "60 CM",
      "size": "60",
      "sizeCm": 60,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    }
  ],
  "seller": null,
  "availability": "out-of-stock",
  "gtins": [],
  "imageUrl": "https://cdn.shopify.com/s/files/1/0582/1677/5854/files/az_0217707_1411-0.jpg?v=1784300986",
  "rawTitle": "Cannondale Topstone Carbon Lefty 3",
  "fetchedAt": "2026-09-19T05:36:21.136Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Ausstattung": "Leichter Carbonrahmen Leichtgewichtige Lefty Federgabel Robuste Shimano GRX 11-Gang Schaltung Hydraulische Shimano GRX Scheibenbremsen",
  "Anzahl Gänge": "11",
  "Artikelmarke": "Cannondale",
  "Ausstattungsniveau": "ohne zusätzliche Ausstattung",
  "Bremsen": "Shimano GRX 600 hydraulic disc",
  "Gabel": "All-New Lefty Oliver, 30mm travel,",
  "Kassette": "Shimano SLX, 11-42, 11-speed",
  "Kette": "Shimano HG601, 11-speed",
  "Kurbelgarnitur": "Cannondale 1, BB30a, OPI SpideRing, 40T",
  "Laufradgröße": "27.5 Zoll",
  "Modelljahr": "2021",
  "Rahmenform": "Diamant",
  "Rahmenmaterial": "Carbon",
  "Reifen hinten": "WTB Byway TCS Light, 650 x 47c, tubeless ready",
  "Reifen vorne": "WTB Venture TCS Light, 650 x 47c, tubeless ready",
  "Sattelstütze": "Cannondale 2, UD Carbon, 27.2 x 350mm",
  "Schalthebel": "Shimano GRX 600, 11-speed",
  "Schaltung": "Shimano GRX",
  "Schaltwerk": "Shimano GRX 800 Wide"
}

Raw adapter output

{
  "retailer": "boc",
  "retailerProductId": "7499303944366",
  "productUrl": "https://boc24.de/products/cannondale-topstone-carbon-lefty-3",
  "extractionMethod": "public-json-api",
  "sourceCategory": "gravel",
  "rawTitle": "Cannondale Topstone Carbon Lefty 3",
  "rawBrand": "CANNONDALE",
  "price": 4399,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://cdn.shopify.com/s/files/1/0582/1677/5854/files/az_0217707_1411-0.jpg?v=1784300986",
  "rawSpecifications": {
    "Ausstattung": "Leichter Carbonrahmen Leichtgewichtige Lefty Federgabel Robuste Shimano GRX 11-Gang Schaltung Hydraulische Shimano GRX Scheibenbremsen",
    "Anzahl Gänge": "11",
    "Artikelmarke": "Cannondale",
    "Ausstattungsniveau": "ohne zusätzliche Ausstattung",
    "Bremsen": "Shimano GRX 600 hydraulic disc",
    "Gabel": "All-New Lefty Oliver, 30mm travel,",
    "Kassette": "Shimano SLX, 11-42, 11-speed",
    "Kette": "Shimano HG601, 11-speed",
    "Kurbelgarnitur": "Cannondale 1, BB30a, OPI SpideRing, 40T",
    "Laufradgröße": "27.5 Zoll",
    "Modelljahr": "2021",
    "Rahmenform": "Diamant",
    "Rahmenmaterial": "Carbon",
    "Reifen hinten": "WTB Byway TCS Light, 650 x 47c, tubeless ready",
    "Reifen vorne": "WTB Venture TCS Light, 650 x 47c, tubeless ready",
    "Sattelstütze": "Cannondale 2, UD Carbon, 27.2 x 350mm",
    "Schalthebel": "Shimano GRX 600, 11-speed",
    "Schaltung": "Shimano GRX",
    "Schaltwerk": "Shimano GRX 800 Wide"
  },
  "rawFeatures": [
    "Leichter Carbonrahmen, Leichtgewichtige Lefty Federgabel, Robuste Shimano GRX 11-Gang Schaltung, Hydraulische Shimano GRX Scheibenbremsen. Hinweis: Durch die Lieferengpässe bei den Fahrradherstellern kann es sein, dass vereinzelt Komponenten der abgebildeten Original-Ausstattung durch gleichwertige oder sogar höherwertige Bauteile ersetzt worden sind. In Einzelfällen ist es möglich, dass das gelieferte Fahrrad von den Abbildungen im Shop abweicht."
  ],
  "rawSizes": [
    {
      "rawSize": "41 CM",
      "size": null,
      "sizeCm": null,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "46 CM",
      "size": "46",
      "sizeCm": 46,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "51 CM",
      "size": "51",
      "sizeCm": 51,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "55 CM",
      "size": "55",
      "sizeCm": 55,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    },
    {
      "rawSize": "60 CM",
      "size": "60",
      "sizeCm": 60,
      "inStock": false,
      "stockCount": null,
      "price": 4399,
      "preorder": false,
      "deliveryNote": null
    }
  ],
  "availabilityText": "all variants sold out",
  "fetchedAt": "2026-09-19T05:36:21.136Z",
  "sourceMeta": {
    "shopifyProductId": 7499303944366,
    "handle": "cannondale-topstone-carbon-lefty-3",
    "productType": "WG1",
    "variantSkus": [
      "217707-1",
      "217707-2",
      "217707-3",
      "217707-4",
      "217707-5",
      "217707-6",
      "217707-7",
      "217707-8",
      "217707-9",
      "217707-10"
    ]
  }
}

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