Cannondale Synapse Carbon 4 Chalk

bike-discount:019c093a5b3b7164baf6ea192d62a5fc · source URL · confidence 1

Eligibility

Can win a band.

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
51 cm	—	51 cm	exact scale	stated by the retailer	yes	listing price	51 cm
56 cm	—	56 cm	exact scale	stated by the retailer	no	listing price	56 cm

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

51 cm

—

51 cm

exact scale

stated by the retailer

yes

listing price

51 cm

56 cm

—

56 cm

exact scale

stated by the retailer

listing price

56 cm

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

Identity

Only listing of this configuration — nothing to merge.

Provenance — why we believe each fact

field source evidence

brand retailer:bike-discount / parse Cannondale

model retailer:bike-discount / derived Cannondale Synapse Carbon 4 Chalk

category retailer:bike-discount / derived retailer taxonomy

frameMaterial retailer:bike-discount / parse Carbon

frameTier retailer:bike-discount / dictionary Synapse Carbon

groupsetFamily retailer:bike-discount / dictionary Shimano 105 Di2 7150, braze-on 2x12-speed || Shimano 105 Di2 7150 2x12-speed || Shimano 105 Di2 R7170, 2x12-speed

electronicShifting retailer:bike-discount / derived Di2

speeds retailer:bike-discount / parse 2x12

brakes retailer:bike-discount / parse hydraulic disc

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

fork retailer:bike-discount / dictionary Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/5" Delta ste

dropperPost retailer:bike-discount / derived seatpost row "Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm l" names no dropper, in a 29-field spec table

beltDrive retailer:bike-discount / parse Shimano 105 Di2 R7170, 2x12-speed

wheelSize retailer:bike-discount / parse 28

wheelMaterial retailer:bike-discount / dictionary DT Swiss R470

wheelTier retailer:bike-discount / dictionary DT Swiss R470

powerMeter retailer:bike-discount / derived absent from a 29-field spec table

availability retailer:bike-discount / derived 1/2 sizes in stock

field	source	evidence
brand	`retailer:bike-discount` / parse	Cannondale
model	`retailer:bike-discount` / derived	Cannondale Synapse Carbon 4 Chalk
category	`retailer:bike-discount` / derived	retailer taxonomy
frameMaterial	`retailer:bike-discount` / parse	Carbon
frameTier	`retailer:bike-discount` / dictionary	Synapse Carbon
groupsetFamily	`retailer:bike-discount` / dictionary	Shimano 105 Di2 7150, braze-on 2x12-speed \|\| Shimano 105 Di2 7150 2x12-speed \|\| Shimano 105 Di2 R7170, 2x12-speed
electronicShifting	`retailer:bike-discount` / derived	Di2
speeds	`retailer:bike-discount` / parse	2x12
brakes	`retailer:bike-discount` / parse	hydraulic disc
suspension	`retailer:bike-discount` / derived	no suspension fork and no rear shock on a drop-bar listing
fork	`retailer:bike-discount` / dictionary	Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/5" Delta ste
dropperPost	`retailer:bike-discount` / derived	seatpost row "Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm l" names no dropper, in a 29-field spec table
beltDrive	`retailer:bike-discount` / parse	Shimano 105 Di2 R7170, 2x12-speed
wheelSize	`retailer:bike-discount` / parse	28
wheelMaterial	`retailer:bike-discount` / dictionary	DT Swiss R470
wheelTier	`retailer:bike-discount` / dictionary	DT Swiss R470
powerMeter	`retailer:bike-discount` / derived	absent from a 29-field spec table
availability	`retailer:bike-discount` / derived	1/2 sizes in stock

Warnings

info ai-normalization-failed — AI normalization errored: credit_balance_exhausted: 429 You have no credits remaining. Add credits to continue using the API at https://platform.openai.com/settings/organization/billing/.
info single-size-only — Only one size is in stock (51 cm).

Score breakdown

{
  "frameScore": 26,
  "drivetrainScore": 27,
  "wheelScore": 9,
  "extrasScore": 3,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 65,
  "notes": [
    "Frame grade \"standard\" (the maker's base carbon): scored as plain carbon.",
    "Shimano 105 Di2 = 27.",
    "Wheels \"good-aluminium\" = 9.",
    "Brakes \"hydraulic-disc\" +3.",
    "Weight not published: no weight adjustment either way."
  ],
  "marketPrice": 3143,
  "valueScore": 1.123,
  "savingsVsMarket": 344
}

AI normalization

Not used: deterministic parsing resolved every field it needed.

Normalized record

{
  "id": "bike-discount:019c093a5b3b7164baf6ea192d62a5fc",
  "retailer": "bike-discount",
  "retailerProductId": "019c093a5b3b7164baf6ea192d62a5fc",
  "productUrl": "https://www.bike-discount.de/en/cannondale-synapse-carbon-4-chalk",
  "brand": "Cannondale",
  "model": "Synapse Carbon 4 Chalk",
  "modelYear": null,
  "category": "road",
  "categoryBasis": "route",
  "sourceCategory": "road",
  "price": 2799,
  "originalPrice": 3499,
  "currency": "EUR",
  "discountPercent": 20,
  "frameMaterial": "carbon",
  "frameModel": "Synapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, ",
  "frameTier": "standard",
  "groupsetBrand": "Shimano",
  "groupsetFamily": "105 Di2",
  "groupsetGeneration": null,
  "electronicShifting": true,
  "speeds": 12,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "105 Di2",
    "rearDerailleur": "105 Di2",
    "frontDerailleur": "105 Di2",
    "crank": "105",
    "cassette": "105"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano 105 7100, BSA, 50/34: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)",
  "cassette": "Shimano 105 R7100, 11-34, 12-speed",
  "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": "DT Swiss R470 DB, 28h | (F) Shimano RS470, 12x100mm centerlock | (R) Shimano RS470, 12x142mm centerlock",
  "wheelMaterial": "aluminium",
  "wheelTier": "good-aluminium",
  "tyres": "Vittoria Rubino Pro IV, 700x32c",
  "weightKg": null,
  "ebike": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "51 cm",
      "size": "51",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "56 cm",
      "size": "56",
      "sizeCm": 56,
      "inStock": false,
      "stockCount": 0,
      "price": null
    }
  ],
  "seller": null,
  "availability": "limited",
  "gtins": [],
  "imageUrl": "https://www.bike-discount.de/media/64/82/e6/1770112179/20168913%20Synapse%20Carbon%204%20Chalk%20Cannondale%20%281%29-9622_j7f.avif?ts=1770112179",
  "rawTitle": "Cannondale Synapse Carbon 4 Chalk",
  "fetchedAt": "2026-11-01T01:30:31.963Z",
  "normalizationConfidence": 1,
  "warnings": [
    {
      "code": "ai-normalization-failed",
      "message": "AI normalization errored: credit_balance_exhausted: 429 You have no credits remaining. Add credits to continue using the API at https://platform.openai.com/settings/organization/billing/.",
      "severity": "info"
    },
    {
      "code": "single-size-only",
      "message": "Only one size is in stock (51 cm).",
      "severity": "info"
    }
  ]
}

Parsed specification table

{
  "Frame": "Synapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, SmartSense Gen 2.0 compatible, fender mounts",
  "Wheel size": "28\"",
  "Speeds": "2x12",
  "Colour": "Chalk",
  "Fork": "Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8\" to 1-1/5\" Delta steerer, 55mm offset, fender mounts",
  "Brakes": "Shimano 105 7170 hydraulic disc",
  "Brake discs": "160/160mm RT70 rotors",
  "Brake levers": "Shimano 105 Di2 7170 hydraulic disc",
  "Headset": "Integrated, 1-1/8\" - 1-1/2\"",
  "Stem": "Cannondale C1 Conceal, Alloy, 31.8, -6°: 80mm (44-48m), 90mm (51cm), 100mm (54-56cm), 110mm (58-61cm)",
  "Handlebar": "Vision Trimax Aero Alloy: 400mm (44-51cm), 420mm (54-61cm)",
  "Handlebar tape": "Cannondale Bar Tape, 3.5mm",
  "Saddle": "Fizik Vento Argo X5, 140mm",
  "Seatpost": "Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm)",
  "Crankset": "Shimano 105 7100, BSA, 50/34: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)",
  "Bottom bracket": "Shimano BSA 68",
  "Rear derailleur": "Shimano 105 Di2 7150 2x12-speed",
  "Gear shifters": "Shimano 105 Di2 7150, braze-on 2x12-speed",
  "Front derailleur": "Shimano 105 Di2 R7170, 2x12-speed",
  "Cassette": "Shimano 105 R7100, 11-34, 12-speed",
  "Chain": "Shimano 105, 12-speed",
  "Tyres": "Vittoria Rubino Pro IV, 700x32c",
  "Front hub": "(F) Shimano RS470, 12x100mm centerlock",
  "Rear hub": "(R) Shimano RS470, 12x142mm centerlock",
  "Spokes": "Stainless Steel, 14g",
  "Rims": "DT Swiss R470 DB, 28h",
  "Pedals": "not included in the scope of delivery",
  "Other details": "TubLarge StashBag downtube storage bag",
  "Maximum total weight allowed": "110 kg (body weight + bicycle + kit)"
}

Raw adapter output

{
  "retailer": "bike-discount",
  "retailerProductId": "019c093a5b3b7164baf6ea192d62a5fc",
  "productUrl": "https://www.bike-discount.de/en/cannondale-synapse-carbon-4-chalk",
  "extractionMethod": "embedded-json",
  "sourceCategory": "road",
  "rawTitle": "Cannondale Synapse Carbon 4 Chalk",
  "rawBrand": "Cannondale",
  "price": 2799,
  "originalPrice": 3499,
  "currency": "EUR",
  "imageUrl": "https://www.bike-discount.de/media/64/82/e6/1770112179/20168913%20Synapse%20Carbon%204%20Chalk%20Cannondale%20%281%29-9622_j7f.avif?ts=1770112179",
  "rawSpecifications": {
    "Frame": "Synapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, SmartSense Gen 2.0 compatible, fender mounts",
    "Wheel size": "28\"",
    "Speeds": "2x12",
    "Colour": "Chalk",
    "Fork": "Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8\" to 1-1/5\" Delta steerer, 55mm offset, fender mounts",
    "Brakes": "Shimano 105 7170 hydraulic disc",
    "Brake discs": "160/160mm RT70 rotors",
    "Brake levers": "Shimano 105 Di2 7170 hydraulic disc",
    "Headset": "Integrated, 1-1/8\" - 1-1/2\"",
    "Stem": "Cannondale C1 Conceal, Alloy, 31.8, -6°: 80mm (44-48m), 90mm (51cm), 100mm (54-56cm), 110mm (58-61cm)",
    "Handlebar": "Vision Trimax Aero Alloy: 400mm (44-51cm), 420mm (54-61cm)",
    "Handlebar tape": "Cannondale Bar Tape, 3.5mm",
    "Saddle": "Fizik Vento Argo X5, 140mm",
    "Seatpost": "Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm)",
    "Crankset": "Shimano 105 7100, BSA, 50/34: 165mm (44cm), 170mm (48-51cm), 172.5 (54-56cm), 175mm (58-61)",
    "Bottom bracket": "Shimano BSA 68",
    "Rear derailleur": "Shimano 105 Di2 7150 2x12-speed",
    "Gear shifters": "Shimano 105 Di2 7150, braze-on 2x12-speed",
    "Front derailleur": "Shimano 105 Di2 R7170, 2x12-speed",
    "Cassette": "Shimano 105 R7100, 11-34, 12-speed",
    "Chain": "Shimano 105, 12-speed",
    "Tyres": "Vittoria Rubino Pro IV, 700x32c",
    "Front hub": "(F) Shimano RS470, 12x100mm centerlock",
    "Rear hub": "(R) Shimano RS470, 12x142mm centerlock",
    "Spokes": "Stainless Steel, 14g",
    "Rims": "DT Swiss R470 DB, 28h",
    "Pedals": "not included in the scope of delivery",
    "Other details": "TubLarge StashBag downtube storage bag",
    "Maximum total weight allowed": "110 kg (body weight + bicycle + kit)"
  },
  "rawFeatures": [],
  "rawSizes": [
    {
      "rawSize": "51 cm",
      "size": "51",
      "sizeCm": 51,
      "inStock": true,
      "stockCount": 1,
      "price": null
    },
    {
      "rawSize": "56 cm",
      "size": "56",
      "sizeCm": 56,
      "inStock": false,
      "stockCount": 0,
      "price": null
    }
  ],
  "availabilityText": null,
  "fetchedAt": "2026-11-01T01:30:31.963Z",
  "sourceMeta": {
    "sku": null,
    "itemNo": "20168913"
  }
}

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