Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep

bikeexchange:trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026 · source URL · confidence 0.78 · GTIN 0197216287636

Eligibility

Cannot win: e-bike bikes are not value-ranked yet (no e-bike-specific equipment model)

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
M	M	—	unknown	unsupported	yes	€3.329	—

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

—

unknown

unsupported

yes

€3.329

—

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 | Charter+ 4 Nexus 5 Belt 540Wh Lowstep | Nexus | 2026
Confidence: medium

brand exact (Trek)
model normalized to "charter 4 nexus 5 belt 540wh lowstep"
groupset family exact (Nexus)
GTIN match (0197216287636)
listings state different model years (2026, 2027); the shared manufacturer barcode says they are one SKU and is trusted over the year fields
2 listings across 2 retailers
downgraded to medium: listings disagree on suspension: none vs front
conflict: suspension: none vs front

retailer	price	sizes in stock
BikeExchange	€3.329	M	debug
Mount7	€3.999	none	debug

retailer

price

sizes in stock

BikeExchange

€3.329

debug

Mount7

€3.999

none

debug

Provenance — why we believe each fact

field source evidence

brand retailer:bikeexchange / parse Trek

model retailer:bikeexchange / derived Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep

modelYear retailer:bikeexchange / parse Jahr: 2026

category retailer:bikeexchange / parse 540Wh

frameMaterial retailer:bikeexchange / parse Aluminium

groupsetFamily retailer:bikeexchange / dictionary Shimano Nexus C7000, 5-speed | Shimano QC300, Centerlock

electronicShifting retailer:bikeexchange / derived Shimano Nexus C7000, 5-speed | Shimano QC300, Centerlock

speeds retailer:bikeexchange / parse 5-speed

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

fork retailer:bikeexchange / dictionary 63mm

dropperPost retailer:bikeexchange / derived seatpost row "Aluminum, suspension, 31.6 mm, 300 mm length" names no dropper, in a 18-field spec table

kickstand retailer:bikeexchange / parse Pletscher Comp Flex 40

powerMeter retailer:bikeexchange / derived absent from a 18-field spec table

availability retailer:bikeexchange / derived sizes 1: 1 stocked, 0 gone, 0 unread

seller retailer:bikeexchange / parse M: Bike Boutique Bad Tölz GmbH

ebike.motor retailer:bikeexchange / parse Bosch Performance Line, 250 W, 75 Nm, 25 km/h | Bosch

ebike.motor.torqueNm retailer:bikeexchange / parse 75 Nm

ebike.motor.power retailer:bikeexchange / parse Bosch Performance Line, 250 W, 75 Nm, 25 km/h | Bosch

ebike.battery.capacityWh retailer:bikeexchange / parse 540 Wh

ebike.frameShape retailer:bikeexchange / parse Lowstep

ebike.speedClass ai / ai (1) Motor: Bosch Performance Line, 250 W, 75 Nm, 25 km/h

field	source	evidence
brand	`retailer:bikeexchange` / parse	Trek
model	`retailer:bikeexchange` / derived	Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep
modelYear	`retailer:bikeexchange` / parse	Jahr: 2026
category	`retailer:bikeexchange` / parse	540Wh
frameMaterial	`retailer:bikeexchange` / parse	Aluminium
groupsetFamily	`retailer:bikeexchange` / dictionary	Shimano Nexus C7000, 5-speed \| Shimano QC300, Centerlock
electronicShifting	`retailer:bikeexchange` / derived	Shimano Nexus C7000, 5-speed \| Shimano QC300, Centerlock
speeds	`retailer:bikeexchange` / parse	5-speed
suspension	`retailer:bikeexchange` / derived	no suspension fork and no rear shock on a drop-bar listing
fork	`retailer:bikeexchange` / dictionary	63mm
dropperPost	`retailer:bikeexchange` / derived	seatpost row "Aluminum, suspension, 31.6 mm, 300 mm length" names no dropper, in a 18-field spec table
kickstand	`retailer:bikeexchange` / parse	Pletscher Comp Flex 40
powerMeter	`retailer:bikeexchange` / derived	absent from a 18-field spec table
availability	`retailer:bikeexchange` / derived	sizes 1: 1 stocked, 0 gone, 0 unread
seller	`retailer:bikeexchange` / parse	M: Bike Boutique Bad Tölz GmbH
ebike.motor	`retailer:bikeexchange` / parse	Bosch Performance Line, 250 W, 75 Nm, 25 km/h \| Bosch
ebike.motor.torqueNm	`retailer:bikeexchange` / parse	75 Nm
ebike.motor.power	`retailer:bikeexchange` / parse	Bosch Performance Line, 250 W, 75 Nm, 25 km/h \| Bosch
ebike.battery.capacityWh	`retailer:bikeexchange` / parse	540 Wh
ebike.frameShape	`retailer:bikeexchange` / parse	Lowstep
ebike.speedClass	`ai` / ai (1)	Motor: Bosch Performance Line, 250 W, 75 Nm, 25 km/h

Warnings

info single-size-only — Only one size is in stock (M).
info wheel-material-unknown — Wheel material could not be established.

Score breakdown

{
  "frameScore": 11,
  "drivetrainScore": 0,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 2,
  "weightAdjustment": 0,
  "equipmentValue": 18,
  "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.",
    "Weight not published: no weight adjustment either way.",
    "Fork \"rigid\" +2 (0 mm travel, which is not scored)."
  ],
  "marketPrice": null,
  "valueScore": null,
  "savingsVsMarket": null
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "brakes",
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "The source names a Shimano Nexus internal-gear hub and a Gates CDX 32T cassette, but does not provide enough drivetrain component information to determine whether the groupset is mixed. Wheel material, wheel tier, brake type, and complete-bike weight are not stated.",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Rahmenmaterial: Aluminium",
      "confidence": 1
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Shimano Nexus C7000, 5-speed",
      "confidence": 0.99
    },
    "groupsetFamily": {
      "value": "Nexus",
      "evidence": "Shimano Nexus C7000, 5-speed",
      "confidence": 0.99
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "Nabenschaltung",
      "confidence": 0.85
    },
    "speeds": {
      "value": "5",
      "evidence": "Shimano Nexus C7000, 5-speed",
      "confidence": 1
    },
    "mixedGroupset": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "brakes": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "The source names a Shimano Nexus internal-gear hub and a Gates CDX 32T cassette, but does not provide enough drivetrain component information to determine whether the groupset is mixed. Wheel material, wheel tier, brake type, and complete-bike weight are not stated."
  }
}

Normalized record

{
  "id": "bikeexchange:trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026",
  "retailer": "bikeexchange",
  "retailerProductId": "trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026",
  "productUrl": "https://www.bikeexchange.de/de-DE/products/trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026?sku=TRE_0000677033",
  "brand": "Trek",
  "model": "Charter+ 4 Nexus 5 Belt 540Wh Lowstep",
  "modelYear": 2026,
  "category": "e-bike",
  "categoryBasis": "stated",
  "sourceCategory": "e-bike",
  "price": 3329,
  "originalPrice": 3699,
  "currency": "EUR",
  "discountPercent": 10,
  "frameMaterial": "aluminium",
  "frameModel": null,
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "Nexus",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 5,
  "mixedGroupset": false,
  "groupsetComponents": {
    "hubs": "Nexus"
  },
  "groupsetTierSpread": 0,
  "crank": null,
  "cassette": "Gates CDX 32T, stainless steel",
  "brakes": "unknown",
  "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": true,
  "lighting": null,
  "wheelSize": null,
  "wheelset": "Bontrager Kovee, hollow chamber, Tubeless Ready, 28-hole, 23 mm internal width, Presta valve",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": null,
  "weightKg": null,
  "ebike": {
    "motor": {
      "text": "Bosch Performance Line, 250 W, 75 Nm, 25 km/h | Bosch",
      "brand": "bosch",
      "model": null,
      "position": "unknown",
      "torqueNm": 75,
      "torqueSource": "retailer",
      "ratedPowerW": 250,
      "peakPowerW": null
    },
    "battery": {
      "text": "540 Wh",
      "capacityWh": 540,
      "count": 1,
      "integration": "unknown",
      "removable": null
    },
    "speedClass": "pedelec-25",
    "rangeExtender": "unknown",
    "display": null,
    "abs": null,
    "autoShift": null,
    "statedRangeKm": null,
    "eDiscipline": "unknown",
    "eDisciplineBasis": null,
    "frameShape": "step-through",
    "cargoType": "unknown",
    "maxSystemWeightKg": null,
    "rackCapacityKg": null,
    "weightIncludesBattery": null
  },
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": 3329,
      "seller": "Bike Boutique Bad Tölz GmbH",
      "deliveryNote": "Reguläre Lieferzeit 6 Tage"
    }
  ],
  "seller": "Bike Boutique Bad Tölz GmbH",
  "availability": "limited",
  "gtins": [
    "0197216287636"
  ],
  "imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/bfd9a3cce8d37bcf9371-4yrMRkQ4.png",
  "rawTitle": "Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep",
  "fetchedAt": "2026-09-26T06:37:14.063Z",
  "normalizationConfidence": 0.78,
  "warnings": [
    {
      "code": "single-size-only",
      "message": "Only one size is in stock (M).",
      "severity": "info"
    },
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    }
  ],
  "ebikeAi": {
    "requested": [
      "motorModel",
      "speedClass",
      "batteryIntegration"
    ],
    "applied": [
      "speedClass"
    ],
    "rejected": [],
    "notes": "",
    "raw": {
      "motorBrand": {
        "value": "bosch",
        "evidence": "Motorhersteller: Bosch",
        "confidence": 1
      },
      "motorModel": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "batteryWh": {
        "value": "540",
        "evidence": "Akkukapazität: 540 Wh",
        "confidence": 1
      },
      "speedClass": {
        "value": "pedelec-25",
        "evidence": "Motor: Bosch Performance Line, 250 W, 75 Nm, 25 km/h",
        "confidence": 1
      },
      "batteryIntegration": {
        "value": null,
        "evidence": null,
        "confidence": 1
      },
      "frameShape": {
        "value": "step-through",
        "evidence": "TITLE: Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep",
        "confidence": 0.95
      },
      "notes": ""
    }
  }
}

Parsed specification table

{
  "Rahmenmaterial": "Aluminium",
  "Nabe hinten": "Shimano Nexus C7000, 5-speed",
  "Laufräder": "Bontrager Kovee, hollow chamber, Tubeless Ready, 28-hole, 23 mm internal width, Presta valve",
  "Nabe vorne": "Shimano QC300, Centerlock",
  "Vorbau": "Bontrager Alloy, 31.8 mm clamp, adjustable rise, Blendr compatible, 80 mm length",
  "Lenker": "Bontrager Alloy, 31.8 mm, comfort sweep, 660 mm",
  "Akkukapazität": "540 Wh",
  "Motor": "Bosch Performance Line, 250 W, 75 Nm, 25 km/h",
  "Motorhersteller": "Bosch",
  "Ständer": "Pletscher Comp Flex 40",
  "Kassette": "Gates CDX 32T, stainless steel",
  "Pedale": "Bontrager City Pedals",
  "Sattel": "Bontrager Boulevard",
  "Sattelstütze": "Aluminum, suspension, 31.6 mm, 300 mm length",
  "Gabel Bauart": "Federgabel",
  "Federweg vorne": "63mm",
  "Gabelhersteller": "SR Suntour",
  "Jahr": "2026"
}

Raw adapter output

{
  "retailer": "bikeexchange",
  "retailerProductId": "trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026",
  "productUrl": "https://www.bikeexchange.de/de-DE/products/trek_charterplus_4_nexus_5_belt_540wh_lowstep_2026?sku=TRE_0000677033",
  "extractionMethod": "embedded-json",
  "sourceCategory": "e-bike",
  "rawTitle": "Trek Charter+ 4 Nexus 5 Belt 540Wh Lowstep",
  "rawBrand": "Trek",
  "price": 3329,
  "originalPrice": 3699,
  "currency": "EUR",
  "imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/bfd9a3cce8d37bcf9371-4yrMRkQ4.png",
  "rawSpecifications": {
    "Rahmenmaterial": "Aluminium",
    "Nabe hinten": "Shimano Nexus C7000, 5-speed",
    "Laufräder": "Bontrager Kovee, hollow chamber, Tubeless Ready, 28-hole, 23 mm internal width, Presta valve",
    "Nabe vorne": "Shimano QC300, Centerlock",
    "Vorbau": "Bontrager Alloy, 31.8 mm clamp, adjustable rise, Blendr compatible, 80 mm length",
    "Lenker": "Bontrager Alloy, 31.8 mm, comfort sweep, 660 mm",
    "Akkukapazität": "540 Wh",
    "Motor": "Bosch Performance Line, 250 W, 75 Nm, 25 km/h",
    "Motorhersteller": "Bosch",
    "Ständer": "Pletscher Comp Flex 40",
    "Kassette": "Gates CDX 32T, stainless steel",
    "Pedale": "Bontrager City Pedals",
    "Sattel": "Bontrager Boulevard",
    "Sattelstütze": "Aluminum, suspension, 31.6 mm, 300 mm length",
    "Gabel Bauart": "Federgabel",
    "Federweg vorne": "63mm",
    "Gabelhersteller": "SR Suntour",
    "Jahr": "2026"
  },
  "rawFeatures": [
    "Bosch",
    "540wh",
    "Nabenschaltung",
    "Beschreibung"
  ],
  "rawSizes": [
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": 3329,
      "seller": "Bike Boutique Bad Tölz GmbH",
      "deliveryNote": "Reguläre Lieferzeit 6 Tage"
    }
  ],
  "availabilityText": "sizes 1: 1 stocked, 0 gone, 0 unread",
  "fetchedAt": "2026-09-26T06:37:14.063Z",
  "sourceMeta": {
    "skus": [
      "197216287636"
    ],
    "shopSkus": [
      "TRE_0000677033",
      "TRE_0000677033"
    ],
    "seller": "Bike Boutique Bad Tölz GmbH",
    "sellerOfSize": "M",
    "sellerId": "00613770-056d-4a35-b7f6-fb348196260b",
    "storeKey": "store_01KBQD0R8Q1W4RPRV71FKZEWMZ_eur",
    "storeCity": "Bad Tölz",
    "storeCountry": "DE",
    "storeDelivers": true,
    "storeClickAndCollect": true,
    "storeReservation": true,
    "storeDeliveryTime": "P6D",
    "shippingPrice": 95,
    "hasMoreSellers": false,
    "condition": "NEW",
    "ctProductId": "962d762e-2d86-4fda-b50d-1f260a067999",
    "shopCategory": "E-City & Urban",
    "colourCount": 1,
    "fetchedSku": "TRE_0000677033"
  },
  "listingPath": [
    "E-Bikes",
    "E-City & Urban"
  ]
}

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