Trek Marlin 4 2026

lucky-bike:lb74079_purple flip/black fade · source URL · confidence 0.75

Eligibility

Can win a band.

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
XS	XS	—	unknown	unsupported	yes	listing price	—
S	S	—	unknown	unsupported	yes	listing price	—
M	M	—	unknown	unsupported	yes	listing price	—
ML	M/L	—	unknown	unsupported	yes	listing price	—
L	L	—	unknown	unsupported	yes	listing price	—

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

—

unknown

unsupported

yes

listing price

—

unknown

unsupported

yes

listing price

—

unknown

unsupported

yes

listing price

—

M/L

—

unknown

unsupported

yes

listing price

—

unknown

unsupported

yes

listing price

—

mapping	unsupported
reason	Trek publishes no defensible conventional equivalence for its letter sizes. Trek states it 'recently transitioned Trek road bike sizing from numerical sizing to alpha sizing' and now publishes height and inseam only. The centimetre figures retailers print beside Trek letters are per-model seat-tube lengths, not size names: the same 'M' appears as 47.6 cm on a Madone and 50 cm on a Domane, and 'S' also appears as 47.6 cm. The only cm-to-letter statement Trek makes is partial — the Madone Gen 8 FAQ says 'Sizes 52cm and 54cm have been combined into one size (M) and size 62cm has been replaced with a new XL frame' — which accounts for two of eight old sizes and leaves 58 cm and 60 cm unresolved between L and XL. Any complete mapping would have to be invented, so Trek keeps its letters and its retailer-printed centimetres are discarded rather than read as conventional sizes.

mapping

unsupported

reason

Trek publishes no defensible conventional equivalence for its letter sizes. Trek states it 'recently transitioned Trek road bike sizing from numerical sizing to alpha sizing' and now publishes height and inseam only. The centimetre figures retailers print beside Trek letters are per-model seat-tube lengths, not size names: the same 'M' appears as 47.6 cm on a Madone and 50 cm on a Domane, and 'S' also appears as 47.6 cm. The only cm-to-letter statement Trek makes is partial — the Madone Gen 8 FAQ says 'Sizes 52cm and 54cm have been combined into one size (M) and size 62cm has been replaced with a new XL frame' — which accounts for two of eight old sizes and leaves 58 cm and 60 cm unresolved between L and XL. Any complete mapping would have to be invented, so Trek keeps its letters and its retailer-printed centimetres are discarded rather than read as conventional sizes.

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

Identity

Canonical configuration: Trek | Marlin 4 | 2027
Confidence: medium

brand exact (Trek)
model normalized to "marlin 4"
groupset family unidentified on every listing
model year exact (2027)
2 listings across 1 retailer
downgraded to medium: no shared GTIN, and the undated listings do not name a colourway a dated listing also names

retailer	price	sizes in stock
Lucky Bike	€579	XS, S, M, ML, L	debug
Lucky Bike	€579	XS, S, L	debug

retailer

price

sizes in stock

Lucky Bike

€579

XS, S, M, ML, L

debug

Lucky Bike

€579

XS, S, L

debug

Provenance — why we believe each fact

field source evidence

brand retailer:lucky-bike / parse Trek

model retailer:lucky-bike / derived Trek Marlin 4 2026

modelYear retailer:lucky-bike / parse Modelljahr: 2027

category retailer:lucky-bike / derived retailer taxonomy

frameMaterial retailer:lucky-bike / parse Aluminium

speeds retailer:lucky-bike / parse 8fach

brakes retailer:lucky-bike / parse hydraulische Scheibenbremse

suspension retailer:lucky-bike / derived suspension fork "SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannun" and no rear shock in a 26-field spec table

fork retailer:lucky-bike / parse SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannung, 46 mm Vorbiegung für 29"-Laufrad, 100 mm-Schnellspannachs

dropperPost retailer:lucky-bike / derived seatpost row "Bontrager Aluminium, 31,6 mm, 12 mm Versatz, 330 mm Länge" names no dropper, in a 26-field spec table

beltDrive retailer:lucky-bike / parse KMC

wheelSize retailer:lucky-bike / parse 27.5

wheelMaterial retailer:lucky-bike / parse Aluminium

powerMeter retailer:lucky-bike / derived absent from a 26-field spec table

availability retailer:lucky-bike / derived 5 of 5 sizes orderable

field	source	evidence
brand	`retailer:lucky-bike` / parse	Trek
model	`retailer:lucky-bike` / derived	Trek Marlin 4 2026
modelYear	`retailer:lucky-bike` / parse	Modelljahr: 2027
category	`retailer:lucky-bike` / derived	retailer taxonomy
frameMaterial	`retailer:lucky-bike` / parse	Aluminium
speeds	`retailer:lucky-bike` / parse	8fach
brakes	`retailer:lucky-bike` / parse	hydraulische Scheibenbremse
suspension	`retailer:lucky-bike` / derived	suspension fork "SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannun" and no rear shock in a 26-field spec table
fork	`retailer:lucky-bike` / parse	SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannung, 46 mm Vorbiegung für 29"-Laufrad, 100 mm-Schnellspannachs
dropperPost	`retailer:lucky-bike` / derived	seatpost row "Bontrager Aluminium, 31,6 mm, 12 mm Versatz, 330 mm Länge" names no dropper, in a 26-field spec table
beltDrive	`retailer:lucky-bike` / parse	KMC
wheelSize	`retailer:lucky-bike` / parse	27.5
wheelMaterial	`retailer:lucky-bike` / parse	Aluminium
powerMeter	`retailer:lucky-bike` / derived	absent from a 26-field spec table
availability	`retailer:lucky-bike` / derived	5 of 5 sizes orderable

Warnings

high groupset-unknown — Groupset could not be established.

Score breakdown

{
  "frameScore": 11,
  "drivetrainScore": 0,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 0,
  "weightAdjustment": 0,
  "equipmentValue": 16,
  "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 \"hydraulic-disc\" = 0, the baseline for mtb-hardtail.",
    "Weight not published: no weight adjustment either way.",
    "Fork series not stated: scored at the bottom of the fork ladder rather than assumed."
  ],
  "marketPrice": 540,
  "valueScore": 0.933,
  "savingsVsMarket": -39
}

AI normalization

{
  "requested": [
    "groupsetFamily",
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [],
  "rejected": [
    {
      "field": "mixedGroupset",
      "reason": "evidence not found verbatim in source",
      "value": "true",
      "evidence": "Schaltwerk: Shimano ESSA U2000\nKurbelsatz: ProWheel, Aluminium, Narrow-Wide-Stahlkettenblatt (32 Z.), 170 mm Kurbelarmlänge"
    }
  ],
  "notes": "groupsetFamily: Shimano ESSA U2000 is not in the allowed vocabulary so set to null. wheelMaterial not stated for rims/wheels (Felgen described without material); hubs are aluminium but that does not establish wheel material. wheelTier: Bontrager Connection is a house model but not mapped to a tier here, so null. There is an internal inconsistency in the source: \"Reifen: ... 29 x 2.40\" vs \"Laufradgröße: 27.5 Zoll\"; both verbatim lines are present in the source.",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Rahmenmaterial: Aluminium",
      "confidence": 0.99
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Schaltwerk: Shimano ESSA U2000",
      "confidence": 0.95
    },
    "groupsetFamily": {
      "value": null,
      "evidence": null,
      "confidence": 0.01
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "Kettenschaltung",
      "confidence": 0.9
    },
    "speeds": {
      "value": "8",
      "evidence": "Ganganzahl: 8",
      "confidence": 0.99
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Schaltwerk: Shimano ESSA U2000\nKurbelsatz: ProWheel, Aluminium, Narrow-Wide-Stahlkettenblatt (32 Z.), 170 mm Kurbelarmlänge",
      "confidence": 0.9
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.01
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0.01
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Tektro HD-M275 hydraulische Scheibenbremse",
      "confidence": 0.99
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0.01
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.01
    },
    "notes": "groupsetFamily: Shimano ESSA U2000 is not in the allowed vocabulary so set to null. wheelMaterial not stated for rims/wheels (Felgen described without material); hubs are aluminium but that does not establish wheel material. wheelTier: Bontrager Connection is a house model but not mapped to a tier here, so null. There is an internal inconsistency in the source: \"Reifen: ... 29 x 2.40\" vs \"Laufradgröße: 27.5 Zoll\"; both verbatim lines are present in the source."
  }
}

Normalized record

{
  "id": "lucky-bike:lb74079_purple flip/black fade",
  "retailer": "lucky-bike",
  "retailerProductId": "lb74079_purple flip/black fade",
  "productUrl": "https://www.lucky-bike.de/Fahrraeder/Mountainbike/MTB-Hardtail/Trek-Marlin-4-2026-S-purple-flip-black-fade.html",
  "brand": "Trek",
  "model": "Marlin 4",
  "modelYear": 2027,
  "category": "mtb",
  "categoryBasis": "route",
  "sourceCategory": "mtb",
  "price": 579,
  "originalPrice": null,
  "currency": "EUR",
  "discountPercent": null,
  "frameMaterial": "aluminium",
  "frameModel": "Alpha Silver Aluminium, interne Zugführung für Schaltwerk und Variosattelstütze, Gepäckträgerösen, Seitenständeraufnahme, 135 x 5 mm ThruSkew Achse",
  "frameTier": null,
  "groupsetBrand": null,
  "groupsetFamily": null,
  "groupsetGeneration": null,
  "electronicShifting": null,
  "speeds": 8,
  "mixedGroupset": null,
  "groupsetComponents": null,
  "groupsetTierSpread": 0,
  "crank": "ProWheel, Aluminium, Narrow-Wide-Stahlkettenblatt (32 Z.), 170 mm Kurbelarmlänge",
  "cassette": "Shimano HG300, 11-45 Z., 8fach",
  "brakes": "hydraulic-disc",
  "brakePistons": null,
  "brakeTier": "unknown",
  "suspension": "front",
  "fork": {
    "make": "SR Suntour",
    "line": "XCE",
    "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": "Bontrager Connection, Hohlkammerfelge, 32-Loch, 20 mm Innenweite, Schrader-Ventil | Formula DC-20, Aluminium, 6-Loch-Scheibenaufnahme, 5 x 1",
  "wheelMaterial": "aluminium",
  "wheelTier": "unknown",
  "tyres": "Bontrager Montrose Comp, Drahtwulstkern, 30 TPI, 29 x 2.40",
  "weightKg": null,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "ML",
      "size": "M/L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [],
  "imageUrl": "https://images.lucky-bike.de/out/pictures/generated/product/1/540_340_75/trek-marlin-4-29-purple-flip-black-fade-98352-01.jpg",
  "rawTitle": "Trek Marlin 4 2026",
  "fetchedAt": "2026-09-19T06:09:57.448Z",
  "normalizationConfidence": 0.75,
  "warnings": [
    {
      "code": "groupset-unknown",
      "message": "Groupset could not be established.",
      "severity": "high"
    }
  ]
}

Parsed specification table

{
  "Schaltwerk": "Shimano ESSA U2000",
  "Bremse": "Tektro HD-M275 hydraulische Scheibenbremse // Hydraulische Scheibenbremse Tektro HD-M275",
  "Reifen": "Bontrager Montrose Comp, Drahtwulstkern, 30 TPI, 29 x 2.40",
  "Rahmenmaterial": "Aluminium",
  "Gabel": "SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannung, 46 mm Vorbiegung für 29\"-Laufrad, 100 mm-Schnellspannachse, 100 mm Federweg",
  "Laufradgröße": "27.5 Zoll",
  "Felgen": "Bontrager Connection, Hohlkammerfelge, 32-Loch, 20 mm Innenweite, Schrader-Ventil",
  "Nabe vorne": "Formula DC-20, Aluminium, 6-Loch-Scheibenaufnahme, 5 x 100 mm-Schnellspannachse",
  "Nabe hinten": "Formula DC-22, Aluminium, 6-Loch-Scheibenaufnahme, 8/9/10-Freilaufnabe von Shimano, 135 x 5 mm-Schnellspannachse",
  "Kurbelsatz": "ProWheel, Aluminium, Narrow-Wide-Stahlkettenblatt (32 Z.), 170 mm Kurbelarmlänge",
  "Kette": "KMC Z8.3, für 8fach-Kassette",
  "Bremstyp": "hydraulische Scheibenbremse",
  "Schaltungsart": "Kettenschaltung",
  "Ganganzahl": "8",
  "Zahnkränze": "Shimano HG300, 11-45 Z., 8fach",
  "Lenker": "Bontrager aus Aluminium, 31,8 mm, 15 mm Rise, 750 mm Breite",
  "Griffe": "Trek Line Comp, Nylonschraubklemmung",
  "Vorbau": "Bontrager Comp, 31,8 mm, Blendr-kompatibel, 7 Grad, 50 mm Länge",
  "Sattel": "Bontrager Verse Short, Edelstahlstreben",
  "Sattelstütze": "Bontrager Aluminium, 31,6 mm, 12 mm Versatz, 330 mm Länge",
  "Pedale": "nylon platform",
  "Rahmeninformation": "Alpha Silver Aluminium, interne Zugführung für Schaltwerk und Variosattelstütze, Gepäckträgerösen, Seitenständeraufnahme, 135 x 5 mm ThruSkew Achse",
  "Rahmenform": "Diamant",
  "Straßenausstattung": "nein",
  "Modelljahr": "2027",
  "Typ": "unisex"
}

Raw adapter output

{
  "retailer": "lucky-bike",
  "retailerProductId": "lb74079_purple flip/black fade",
  "productUrl": "https://www.lucky-bike.de/Fahrraeder/Mountainbike/MTB-Hardtail/Trek-Marlin-4-2026-S-purple-flip-black-fade.html",
  "extractionMethod": "public-search-api",
  "sourceCategory": "mtb",
  "rawTitle": "Trek Marlin 4 2026",
  "rawBrand": "Trek",
  "price": 579,
  "originalPrice": null,
  "currency": "EUR",
  "imageUrl": "https://images.lucky-bike.de/out/pictures/generated/product/1/540_340_75/trek-marlin-4-29-purple-flip-black-fade-98352-01.jpg",
  "rawSpecifications": {
    "Schaltwerk": "Shimano ESSA U2000",
    "Bremse": "Tektro HD-M275 hydraulische Scheibenbremse // Hydraulische Scheibenbremse Tektro HD-M275",
    "Reifen": "Bontrager Montrose Comp, Drahtwulstkern, 30 TPI, 29 x 2.40",
    "Rahmenmaterial": "Aluminium",
    "Gabel": "SR Suntour XCE 28, Spiralfeder, verstellbare Federvorspannung, 46 mm Vorbiegung für 29\"-Laufrad, 100 mm-Schnellspannachse, 100 mm Federweg",
    "Laufradgröße": "27.5 Zoll",
    "Felgen": "Bontrager Connection, Hohlkammerfelge, 32-Loch, 20 mm Innenweite, Schrader-Ventil",
    "Nabe vorne": "Formula DC-20, Aluminium, 6-Loch-Scheibenaufnahme, 5 x 100 mm-Schnellspannachse",
    "Nabe hinten": "Formula DC-22, Aluminium, 6-Loch-Scheibenaufnahme, 8/9/10-Freilaufnabe von Shimano, 135 x 5 mm-Schnellspannachse",
    "Kurbelsatz": "ProWheel, Aluminium, Narrow-Wide-Stahlkettenblatt (32 Z.), 170 mm Kurbelarmlänge",
    "Kette": "KMC Z8.3, für 8fach-Kassette",
    "Bremstyp": "hydraulische Scheibenbremse",
    "Schaltungsart": "Kettenschaltung",
    "Ganganzahl": "8",
    "Zahnkränze": "Shimano HG300, 11-45 Z., 8fach",
    "Lenker": "Bontrager aus Aluminium, 31,8 mm, 15 mm Rise, 750 mm Breite",
    "Griffe": "Trek Line Comp, Nylonschraubklemmung",
    "Vorbau": "Bontrager Comp, 31,8 mm, Blendr-kompatibel, 7 Grad, 50 mm Länge",
    "Sattel": "Bontrager Verse Short, Edelstahlstreben",
    "Sattelstütze": "Bontrager Aluminium, 31,6 mm, 12 mm Versatz, 330 mm Länge",
    "Pedale": "nylon platform",
    "Rahmeninformation": "Alpha Silver Aluminium, interne Zugführung für Schaltwerk und Variosattelstütze, Gepäckträgerösen, Seitenständeraufnahme, 135 x 5 mm ThruSkew Achse",
    "Rahmenform": "Diamant",
    "Straßenausstattung": "nein",
    "Modelljahr": "2027",
    "Typ": "unisex"
  },
  "rawFeatures": [
    "MTB-Hardtail mit 100 mm Federgabel und hydraulischer Scheibenbremse für Waldwege und Geländerunden.",
    "Trek ist ein amerikanischer Fahrradhersteller mit Sitz in Waterloo und zählt zu den weltweit größten Fahrradherstellern. Sie bieten ein breites Produktportfolio an. Weitere Produkte von Trek",
    "Informationen zur Produktsicherheit HerstellerTrek Bicycle GmbHWegastraße 8 C - 6116 Halle - DEmarketing_gas@trekbikes.com"
  ],
  "rawSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "ML",
      "size": "M/L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    }
  ],
  "availabilityText": "5 of 5 sizes orderable",
  "fetchedAt": "2026-09-19T06:09:57.448Z",
  "sourceMeta": {
    "sku": "0098351.006",
    "mpn": "5336970",
    "ldAvailability": "http://schema.org/InStock",
    "weightNote": null,
    "colour": "purple flip/black fade",
    "articleNumber": "0098351.006",
    "ean": "197216252184",
    "badges": null,
    "reductionPercent": null,
    "feedSizes": [
      "S",
      "XS",
      "L",
      "M",
      "ML"
    ],
    "parentSizes": null
  }
}

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