Colnago V4 Ultegra Di2 Carbon Rennrad 28" rot

zweirad-stadler:colnago-v4-ultegra-di2-carbon-rennrad-28-rot · source URL · confidence 1

Eligibility

Can win a band.

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
455 mm = XS	XS	—	unknown	unsupported — the listing's 45.5 cm is a frame measurement	yes	listing price	—
485 mm = S	S	—	unknown	unsupported — the listing's 48.5 cm is a frame measurement	yes	listing price	—
510 mm = M	M	—	unknown	unsupported — the listing's 51 cm is a frame measurement	yes	listing price	—
530 mm = L	L	—	unknown	unsupported — the listing's 53 cm is a frame measurement	yes	listing price	—

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

455 mm = XS

—

unknown

unsupported — the listing's 45.5 cm is a frame measurement

yes

listing price

—

485 mm = S

—

unknown

unsupported — the listing's 48.5 cm is a frame measurement

yes

listing price

—

510 mm = M

—

unknown

unsupported — the listing's 51 cm is a frame measurement

yes

listing price

—

530 mm = L

—

unknown

unsupported — the listing's 53 cm is a frame measurement

yes

listing price

—

mapping	unsupported
discarded figure	the listing prints 45.5 cm beside its letter size
reason	The centimetres retailers print for Colnago are millimetre seat-tube lengths ('420 mm = XXS' … '570 mm = XXL'). The resulting ladder sits 4-5 cm below the conventional scale at every rung, which is the signature of a measurement rather than a name. Nobody names a road frame '530 mm'.

mapping

unsupported

discarded figure

the listing prints 45.5 cm beside its letter size

reason

The centimetres retailers print for Colnago are millimetre seat-tube lengths ('420 mm = XXS' … '570 mm = XXL'). The resulting ladder sits 4-5 cm below the conventional scale at every rung, which is the signature of a measurement rather than a name. Nobody names a road frame '530 mm'.

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

Identity

Canonical configuration: Colnago | V4 Ultegra Di2 Carbon 28" | Ultegra Di2
Confidence: medium

brand exact (Colnago)
model normalized to "v4 ultegra 28"
groupset family exact (Ultegra Di2)
model year unavailable on every listing
3 listings across 1 retailer
downgraded to medium: no shared GTIN, and no listing states a model year

retailer	price	sizes in stock
Zweirad Stadler	€3.992	455 mm = XS, 485 mm = S, 510 mm = M, 530 mm = L	debug
Zweirad Stadler	€3.992	455 mm = XS, 485 mm = S, 510 mm = M, 530 mm = L	debug
Zweirad Stadler	€3.992	485 mm = S, 530 mm = L, 570 mm = XXL	debug

retailer

price

sizes in stock

Zweirad Stadler

€3.992

455 mm = XS, 485 mm = S, 510 mm = M, 530 mm = L

debug

Zweirad Stadler

€3.992

455 mm = XS, 485 mm = S, 510 mm = M, 530 mm = L

debug

Zweirad Stadler

€3.992

485 mm = S, 530 mm = L, 570 mm = XXL

debug

Provenance — why we believe each fact

field source evidence

brand retailer:zweirad-stadler / parse Colnago

model retailer:zweirad-stadler / derived Colnago V4 Ultegra Di2 Carbon Rennrad 28" rot

category retailer:zweirad-stadler / parse Rennrad

frameMaterial retailer:zweirad-stadler / parse Carbon

groupsetFamily retailer:zweirad-stadler / dictionary Shimano Ultegra || Shimano Ultegra Shadow RD-R8150 || Shimano Ultegra FD-R8150 || promoted to Ultegra Di2 on stated actuation "Elektronisch"

electronicShifting retailer:zweirad-stadler / parse Di2

speeds retailer:zweirad-stadler / parse model code M8100

brakes retailer:zweirad-stadler / parse Hydraulische Scheibenbremsen

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

fork retailer:zweirad-stadler / dictionary Colnago Carbongabel Disc

dropperPost retailer:zweirad-stadler / derived seatpost row "Carbon, 0,15 Offset, D-Shape Profil" names no dropper, in a 25-field spec table

beltDrive retailer:zweirad-stadler / parse Shimano Ultegra FD-R8150

wheelSize retailer:zweirad-stadler / parse 28

wheelMaterial retailer:zweirad-stadler / dictionary Fulcrum R600

wheelTier retailer:zweirad-stadler / dictionary Fulcrum R600

powerMeter retailer:zweirad-stadler / derived absent from a 25-field spec table

availability retailer:zweirad-stadler / derived 4 of 4 sizes orderable

field	source	evidence
brand	`retailer:zweirad-stadler` / parse	Colnago
model	`retailer:zweirad-stadler` / derived	Colnago V4 Ultegra Di2 Carbon Rennrad 28" rot
category	`retailer:zweirad-stadler` / parse	Rennrad
frameMaterial	`retailer:zweirad-stadler` / parse	Carbon
groupsetFamily	`retailer:zweirad-stadler` / dictionary	Shimano Ultegra \|\| Shimano Ultegra Shadow RD-R8150 \|\| Shimano Ultegra FD-R8150 \|\| promoted to Ultegra Di2 on stated actuation "Elektronisch"
electronicShifting	`retailer:zweirad-stadler` / parse	Di2
speeds	`retailer:zweirad-stadler` / parse	model code M8100
brakes	`retailer:zweirad-stadler` / parse	Hydraulische Scheibenbremsen
suspension	`retailer:zweirad-stadler` / derived	no suspension fork and no rear shock on a drop-bar listing
fork	`retailer:zweirad-stadler` / dictionary	Colnago Carbongabel Disc
dropperPost	`retailer:zweirad-stadler` / derived	seatpost row "Carbon, 0,15 Offset, D-Shape Profil" names no dropper, in a 25-field spec table
beltDrive	`retailer:zweirad-stadler` / parse	Shimano Ultegra FD-R8150
wheelSize	`retailer:zweirad-stadler` / parse	28
wheelMaterial	`retailer:zweirad-stadler` / dictionary	Fulcrum R600
wheelTier	`retailer:zweirad-stadler` / dictionary	Fulcrum R600
powerMeter	`retailer:zweirad-stadler` / derived	absent from a 25-field spec table
availability	`retailer:zweirad-stadler` / derived	4 of 4 sizes orderable

Warnings

none

Score breakdown

{
  "frameScore": 26,
  "drivetrainScore": 33,
  "wheelScore": 9,
  "extrasScore": 3,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 71,
  "notes": [
    "Shimano Ultegra Di2 = 33.",
    "Wheels \"good-aluminium\" = 9.",
    "Brakes \"hydraulic-disc\" +3.",
    "Weight not published: no weight adjustment either way."
  ],
  "marketPrice": 3930,
  "valueScore": 0.984,
  "savingsVsMarket": -62
}

AI normalization

{
  "requested": [
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "The source states the bike has a 'geringem Gewicht' (low weight) in marketing text but provides no numeric complete-bike weight, so weightKg is null. Wheel tier assigned as good-aluminium based on the named Fulcrum R600 Aluminium-Laufradsatz; if a stricter mapping is required, set wheelTier to null.",
  "raw": {
    "frameMaterial": {
      "value": "carbon",
      "evidence": "Edler Colnago Carbonrahmen mit Carbongabel",
      "confidence": 0.95
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "24-Gang Shimano Ultegra Di2 elektronische Profi-Schaltgruppe",
      "confidence": 0.95
    },
    "groupsetFamily": {
      "value": "Ultegra Di2",
      "evidence": "24-Gang Shimano Ultegra Di2 elektronische Profi-Schaltgruppe",
      "confidence": 0.95
    },
    "electronicShifting": {
      "value": "true",
      "evidence": "Schaltung: Elektronisch",
      "confidence": 0.95
    },
    "speeds": {
      "value": "24",
      "evidence": "Gänge: 24-Gang",
      "confidence": 0.95
    },
    "mixedGroupset": {
      "value": "false",
      "evidence": "24-Gang Shimano Ultegra Di2 elektronische Profi-Schaltgruppe",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": "aluminium",
      "evidence": "Felgen: Fulcrum R600 Aluminium-Laufradsatz",
      "confidence": 0.95
    },
    "wheelTier": {
      "value": "good-aluminium",
      "evidence": "Felgen: Fulcrum R600 Aluminium-Laufradsatz",
      "confidence": 0.75
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremsenart: Hydraulische Scheibenbremsen",
      "confidence": 0.95
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "The source states the bike has a 'geringem Gewicht' (low weight) in marketing text but provides no numeric complete-bike weight, so weightKg is null. Wheel tier assigned as good-aluminium based on the named Fulcrum R600 Aluminium-Laufradsatz; if a stricter mapping is required, set wheelTier to null."
  }
}

Normalized record

{
  "id": "zweirad-stadler:colnago-v4-ultegra-di2-carbon-rennrad-28-rot",
  "retailer": "zweirad-stadler",
  "retailerProductId": "colnago-v4-ultegra-di2-carbon-rennrad-28-rot",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/rennrad/colnago-v4-ultegra-di2-carbon-rennrad-28-rot.html",
  "brand": "Colnago",
  "model": "V4 Ultegra Di2 Carbon 28\" rot",
  "modelYear": null,
  "category": "road",
  "categoryBasis": "stated",
  "sourceCategory": "road",
  "price": 3992,
  "originalPrice": 6000,
  "currency": "EUR",
  "discountPercent": 33,
  "frameMaterial": "carbon",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "Ultegra Di2",
  "groupsetGeneration": null,
  "electronicShifting": true,
  "speeds": 12,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "Ultegra",
    "rearDerailleur": "Ultegra Di2",
    "frontDerailleur": "Ultegra Di2",
    "crank": "Ultegra",
    "cassette": "Ultegra"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano Ultegra 52-36T, Rahmengröße 420 - 485 = 170 mm Kurbelarmlänge, Rahmengröße 510 - 570 = 172,5 mm Kurbelarmlänge",
  "cassette": "Shimano Ultegra 11-34T",
  "brakes": "hydraulic-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": "Fulcrum R600 Aluminium-Laufradsatz",
  "wheelMaterial": "aluminium",
  "wheelTier": "good-aluminium",
  "tyres": "Pirelli P7 Sport",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "455 mm = XS",
      "size": "XS",
      "sizeCm": 45.5,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "485 mm = S",
      "size": "S",
      "sizeCm": 48.5,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "510 mm = M",
      "size": "M",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "530 mm = L",
      "size": "L",
      "sizeCm": 53,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [],
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/colnago-28-v4-ultegra-di2-rennrad-fulcrum-rot-700449-a.jpg",
  "rawTitle": "Colnago V4 Ultegra Di2 Carbon Rennrad 28\" rot",
  "fetchedAt": "2026-09-19T06:31:09.105Z",
  "normalizationConfidence": 1,
  "warnings": []
}

Parsed specification table

{
  "Farbe": "rot",
  "Herstellerfarbe": "VDRD",
  "Gabel": "Colnago Carbongabel Disc",
  "Gänge": "24-Gang",
  "Schaltung": "Elektronisch",
  "Schalthebel": "Shimano Ultegra",
  "Schaltwerk": "Shimano Ultegra Shadow RD-R8150",
  "Umwerfer": "Shimano Ultegra FD-R8150",
  "Bremshebel": "Shimano Ultegra ST-R8170",
  "Bremsenart": "Hydraulische Scheibenbremsen",
  "Bremsen vorne": "Shimano Ultegra R8170",
  "Bremsen hinten": "Shimano Ultegra R8170",
  "Bremsscheiben": "Shimano RT-CL800, 160 mm vorn, 140 mm hinten",
  "Kette": "Shimano Ultegra CN-M8100",
  "Kassette": "Shimano Ultegra 11-34T",
  "Kurbel": "Shimano Ultegra 52-36T, Rahmengröße 420 - 485 = 170 mm Kurbelarmlänge, Rahmengröße 510 - 570 = 172,5 mm Kurbelarmlänge",
  "Felgen": "Fulcrum R600 Aluminium-Laufradsatz",
  "Laufradgröße": "28\"",
  "Reifen": "Pirelli P7 Sport",
  "Sattel": "Selle Italia Novus Boost EVO TI316 Superflow",
  "Sattelstütze": "Carbon, 0,15 Offset, D-Shape Profil",
  "Innenlager": "T47",
  "Lenker": "Colnago HB R41",
  "Griffe": "Lenkerband Colnago Grip Black",
  "Steuersatz": "Acros"
}

Raw adapter output

{
  "retailer": "zweirad-stadler",
  "retailerProductId": "colnago-v4-ultegra-di2-carbon-rennrad-28-rot",
  "productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/rennrad/colnago-v4-ultegra-di2-carbon-rennrad-28-rot.html",
  "extractionMethod": "server-html",
  "sourceCategory": "road",
  "rawTitle": "Colnago V4 Ultegra Di2 Carbon Rennrad 28\" rot",
  "rawBrand": "Colnago",
  "price": 3992,
  "originalPrice": 6000,
  "currency": "EUR",
  "imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/colnago-28-v4-ultegra-di2-rennrad-fulcrum-rot-700449-a.jpg",
  "rawSpecifications": {
    "Farbe": "rot",
    "Herstellerfarbe": "VDRD",
    "Gabel": "Colnago Carbongabel Disc",
    "Gänge": "24-Gang",
    "Schaltung": "Elektronisch",
    "Schalthebel": "Shimano Ultegra",
    "Schaltwerk": "Shimano Ultegra Shadow RD-R8150",
    "Umwerfer": "Shimano Ultegra FD-R8150",
    "Bremshebel": "Shimano Ultegra ST-R8170",
    "Bremsenart": "Hydraulische Scheibenbremsen",
    "Bremsen vorne": "Shimano Ultegra R8170",
    "Bremsen hinten": "Shimano Ultegra R8170",
    "Bremsscheiben": "Shimano RT-CL800, 160 mm vorn, 140 mm hinten",
    "Kette": "Shimano Ultegra CN-M8100",
    "Kassette": "Shimano Ultegra 11-34T",
    "Kurbel": "Shimano Ultegra 52-36T, Rahmengröße 420 - 485 = 170 mm Kurbelarmlänge, Rahmengröße 510 - 570 = 172,5 mm Kurbelarmlänge",
    "Felgen": "Fulcrum R600 Aluminium-Laufradsatz",
    "Laufradgröße": "28\"",
    "Reifen": "Pirelli P7 Sport",
    "Sattel": "Selle Italia Novus Boost EVO TI316 Superflow",
    "Sattelstütze": "Carbon, 0,15 Offset, D-Shape Profil",
    "Innenlager": "T47",
    "Lenker": "Colnago HB R41",
    "Griffe": "Lenkerband Colnago Grip Black",
    "Steuersatz": "Acros"
  },
  "rawFeatures": [
    "455 mm = XS 4-8 Werktage",
    "485 mm = S 4-8 Werktage",
    "510 mm = M 4-8 Werktage",
    "530 mm = L 4-8 Werktage",
    "0% Finanzierung ab 399,20 € möglich",
    "Dienstrad-Leasing möglich",
    "14 Tage kostenloses Rückgaberecht",
    "Fahrrad vollständig montiert und mit wenigen Handgriffen fahrbereit",
    "Das Colnago V4 Ultegra Di2 vereint die traditionsreiche Radrennsport-DNA der italienischen Kultmarke mit modernster Carbon-Technologie und einer kompromisslos hochwertigen Ausstattung. Entwickelt für ambitionierte Rennradfahrer, die sowohl im Training als auch im Wettkampf maximale Performance erwarten, überzeugt das V4 mit geringem Gewicht, hoher Steifigkeit und exzellentem Fahrkomfort.",
    "Edler Colnago Carbonrahmen mit Carbongabel",
    "Carbon-Sattelstütze mit D-Shape Profil",
    "24-Gang Shimano Ultegra Di2 elektronische Profi-Schaltgruppe"
  ],
  "rawSizes": [
    {
      "rawSize": "455 mm = XS",
      "size": "XS",
      "sizeCm": 45.5,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "485 mm = S",
      "size": "S",
      "sizeCm": 48.5,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "510 mm = M",
      "size": "M",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    },
    {
      "rawSize": "530 mm = L",
      "size": "L",
      "sizeCm": 53,
      "inStock": true,
      "stockCount": null,
      "price": null,
      "deliveryNote": "4-8 Werktage"
    }
  ],
  "availabilityText": "4 of 4 sizes orderable",
  "fetchedAt": "2026-09-19T06:31:09.105Z",
  "sourceMeta": {
    "savingBadge": "2008 € gespartauf UVP",
    "deliveryWindows": [
      "455 mm = XS 4-8 Werktage",
      "485 mm = S 4-8 Werktage",
      "510 mm = M 4-8 Werktage",
      "530 mm = L 4-8 Werktage"
    ]
  }
}

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