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Trek Rail+ 8 Gen 5 2026

lucky-bike:lb54229_dark star · source URL · confidence 0.83

Eligibility

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

Size decisions

retailer labelalphacomparable cmmatchmappingin stockvariant priceevidence
MM—unknownunsupportedyeslisting price—
LL—unknownunsupportedyeslisting price—
XLXL—unknownunsupportedyeslisting price—
mappingunsupported
reasonTrek 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 | Rail+ 8 Gen 5 29 | XT | 2026
Confidence: medium

retailerpricesizes in stock
Mount7€4.149L, XL, M, Sdebug
Bike-Mailorder€4.681,44nonedebug
Lucky Bike€4.799,99M, L, XLdebug
Fahrrad XXL€4.999,99L, M, S, XLdebug
BikeExchange€5.499XLdebug
Bike-Mailorder€6.499nonedebug

Provenance — why we believe each fact

fieldsourceevidence
brandretailer:lucky-bike / parseTrek
modelretailer:lucky-bike / derivedTrek Rail+ 8 Gen 5 2026
modelYearretailer:lucky-bike / parseModelljahr: 2026
categoryretailer:lucky-bike / derivedretailer taxonomy
frameMaterialretailer:lucky-bike / parseAluminium
groupsetFamilyretailer:lucky-bike / dictionaryShimano SLX M7100, 12fach || Shimano XT M8100, langer Käfig
electronicShiftingretailer:lucky-bike / derivedShimano SLX M7100, 12fach || Shimano XT M8100, langer Käfig
speedsretailer:lucky-bike / parse12fach
brakesretailer:lucky-bike / parsehydraulische Scheibenbremse
brakeTierretailer:lucky-bike / dictionaryDB 8
brakePistonsretailer:lucky-bike / parse4-Kolben
suspensionretailer:lucky-bike / derivedrear shock row: RockShox Super Deluxe Select+ RT, 205 x 65 mm
forkretailer:lucky-bike / dictionaryRockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealt
rearShockretailer:lucky-bike / dictionaryRockShox Super Deluxe Select+ RT, 205 x 65 mm
dropperPostretailer:lucky-bike / derivedLine Dropper
beltDriveretailer:lucky-bike / parseKettenschaltung
wheelSizeretailer:lucky-bike / parse29
powerMeterretailer:lucky-bike / derivedabsent from a 30-field spec table
availabilityretailer:lucky-bike / derived3 of 3 sizes orderable
ebike.motorretailer:lucky-bike / parseBosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)
ebike.motor.torqueNmretailer:lucky-bike / parse85 Nm
ebike.motor.powerretailer:lucky-bike / parseBosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)
ebike.battery.capacityWhretailer:lucky-bike / parse800 Wh
ebike.battery.integrationretailer:lucky-bike / parsePowerTube
ebike.battery.removableretailer:lucky-bike / parseRemovable
ebike.eDisciplineretailer:lucky-bike / parseshelf: E-MTB Fully
ebike.displayretailer:lucky-bike / parseDisplay/Bedieneinheit: Bosch System-Controller BRC3100, Smart System
ebike.maxSystemWeightKgretailer:lucky-bike / parseZul. Gesamtgewicht (kg): 136
ebike.frameShaperetailer:lucky-bike / parseDiamant
ebike.speedClassai / ai (1)max. Unterstützung bis 25 km/h in EU und APAC

Warnings

Score breakdown

{
  "frameScore": 11,
  "drivetrainScore": 19,
  "wheelScore": 5,
  "extrasScore": 3,
  "suspensionScore": 7,
  "weightAdjustment": 0,
  "equipmentValue": 45,
  "notes": [
    "Shimano SLX = 20.",
    "Mixed groupset -1: cassette is Deore, 12 tier below SLX.",
    "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 \"mid\" +7 (170 mm travel, which is not scored).",
    "Brake series \"basic\" +0.",
    "Dropper post +3."
  ],
  "marketPrice": null,
  "valueScore": null,
  "savingsVsMarket": null
}

AI normalization

{
  "requested": [
    "wheelMaterial",
    "wheelTier",
    "weightKg"
  ],
  "applied": [],
  "rejected": [],
  "notes": "The drivetrain is mixed: XT rear derailleur, SLX chain and shifter, and Deore cassette. The source names the Bontrager Line Comp 30 wheelset but does not establish its material or tier. No complete-bike weight is provided; the stated 136 kg is the permitted total system weight.",
  "raw": {
    "frameMaterial": {
      "value": "aluminium",
      "evidence": "Rahmenmaterial: Aluminium",
      "confidence": 1
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "Schaltwerk: Shimano XT M8100, langer Käfig",
      "confidence": 1
    },
    "groupsetFamily": {
      "value": "XT",
      "evidence": "Schaltwerk: Shimano XT M8100, langer Käfig",
      "confidence": 0.98
    },
    "electronicShifting": {
      "value": null,
      "evidence": null,
      "confidence": 0.2
    },
    "speeds": {
      "value": "12",
      "evidence": "Ganganzahl: 12",
      "confidence": 1
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Schalthebel: Shimano SLX M7100, 12fach",
      "confidence": 1
    },
    "wheelMaterial": {
      "value": null,
      "evidence": null,
      "confidence": 0.05
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0.05
    },
    "brakes": {
      "value": "hydraulic-disc",
      "evidence": "Bremstyp: hydraulische Scheibenbremse",
      "confidence": 1
    },
    "weightKg": {
      "value": null,
      "evidence": null,
      "confidence": 0.05
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0.05
    },
    "notes": "The drivetrain is mixed: XT rear derailleur, SLX chain and shifter, and Deore cassette. The source names the Bontrager Line Comp 30 wheelset but does not establish its material or tier. No complete-bike weight is provided; the stated 136 kg is the permitted total system weight."
  }
}

Normalized record

{
  "id": "lucky-bike:lb54229_dark star",
  "retailer": "lucky-bike",
  "retailerProductId": "lb54229_dark star",
  "productUrl": "https://www.lucky-bike.de/Fahrraeder/E-Bike/E-MTB-Fully/Trek-Rail-8-Gen-5-2026-M-dark-star.html",
  "brand": "Trek",
  "model": "Rail+ 8 Gen 5",
  "modelYear": 2026,
  "category": "e-bike",
  "categoryBasis": "route",
  "sourceCategory": "e-bike",
  "price": 4799.99,
  "originalPrice": 5499,
  "currency": "EUR",
  "discountPercent": 13,
  "frameMaterial": "aluminium",
  "frameModel": "Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachs",
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "SLX",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 12,
  "mixedGroupset": true,
  "groupsetComponents": {
    "shifters": "SLX",
    "rearDerailleur": "XT",
    "cassette": "Deore"
  },
  "groupsetTierSpread": 12,
  "crank": null,
  "cassette": "Shimano Deore M6100, 10-51 Z., 12fach",
  "brakes": "hydraulic-disc",
  "brakePistons": 4,
  "brakeTier": "basic",
  "suspension": "full",
  "fork": {
    "make": "RockShox",
    "line": "ZEB",
    "tier": "mid",
    "travelMm": 170
  },
  "rearShock": {
    "make": "RockShox",
    "line": "Super Deluxe",
    "tier": "upper"
  },
  "dropperPost": true,
  "beltDrive": false,
  "hubDynamo": null,
  "rack": null,
  "mudguards": null,
  "chaincase": null,
  "kickstand": null,
  "lighting": null,
  "wheelSize": "29",
  "wheelset": "Bontrager Line Comp 30",
  "wheelMaterial": "unknown",
  "wheelTier": "unknown",
  "tyres": "Bontrager Brevard Pro XR, Tubeless-Ready, Dual-Mischung, Aramidwulstkern, 60 TPI, 27.5 x 2.50",
  "weightKg": null,
  "ebike": {
    "motor": {
      "text": "Bosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)",
      "brand": "bosch",
      "model": null,
      "position": "unknown",
      "torqueNm": 85,
      "torqueSource": "retailer",
      "ratedPowerW": 250,
      "peakPowerW": null
    },
    "battery": {
      "text": "Bosch PowerTube 800 Wh, Smart System",
      "capacityWh": 800,
      "count": 1,
      "integration": "integrated",
      "removable": true
    },
    "speedClass": "pedelec-25",
    "rangeExtender": "unknown",
    "display": "Bosch System-Controller BRC3100, Smart System",
    "abs": null,
    "autoShift": null,
    "statedRangeKm": null,
    "eDiscipline": "e-mtb",
    "eDisciplineBasis": "leaf",
    "frameShape": "diamond",
    "cargoType": "unknown",
    "maxSystemWeightKg": 136,
    "rackCapacityKg": null,
    "weightIncludesBattery": null
  },
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "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-rail-plus-8-gen-5-dark-star-94610-01.jpg",
  "rawTitle": "Trek Rail+ 8 Gen 5 2026",
  "fetchedAt": "2026-09-26T07:52:05.733Z",
  "normalizationConfidence": 0.83,
  "warnings": [
    {
      "code": "wheel-material-unknown",
      "message": "Wheel material could not be established.",
      "severity": "info"
    },
    {
      "code": "mixed-groupset",
      "message": "Not a uniform groupset: {\"shifters\":\"SLX\",\"rearDerailleur\":\"XT\",\"cassette\":\"Deore\"}. Ranked on the shifting level, with a penalty.",
      "severity": "info"
    }
  ],
  "ebikeAi": {
    "requested": [
      "motorModel",
      "speedClass"
    ],
    "applied": [
      "speedClass"
    ],
    "rejected": [],
    "notes": "The source names the motor as “BDU38”, which does not establish one exact motorModel from the permitted vocabulary. It also states “bis 32 km/h” but explicitly limits maximum assistance to 25 km/h in EU and APAC; therefore speedClass is pedelec-25.",
    "raw": {
      "motorBrand": {
        "value": "bosch",
        "evidence": "Motor: Bosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)",
        "confidence": 1
      },
      "motorModel": {
        "value": null,
        "evidence": null,
        "confidence": 0
      },
      "batteryWh": {
        "value": "800",
        "evidence": "Akkutyp: Bosch PowerTube 800 Wh, Smart System",
        "confidence": 1
      },
      "speedClass": {
        "value": "pedelec-25",
        "evidence": "max. Unterstützung bis 25 km/h in EU und APAC",
        "confidence": 1
      },
      "batteryIntegration": {
        "value": "integrated",
        "evidence": "Rahmeninformation: Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachse, 160 mm Federweg",
        "confidence": 1
      },
      "frameShape": {
        "value": "diamond",
        "evidence": "Rahmenform: Diamant",
        "confidence": 1
      },
      "notes": "The source names the motor as “BDU38”, which does not establish one exact motorModel from the permitted vocabulary. It also states “bis 32 km/h” but explicitly limits maximum assistance to 25 km/h in EU and APAC; therefore speedClass is pedelec-25."
    }
  }
}

Parsed specification table

{
  "Akkutyp": "Bosch PowerTube 800 Wh, Smart System",
  "Display/Bedieneinheit": "Bosch System-Controller BRC3100, Smart System",
  "Motor": "Bosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)",
  "Schaltwerk": "Shimano XT M8100, langer Käfig",
  "Bremse": "Hydraulische 4-Kolben-Scheibenbremse SRAM DB 8",
  "Laufradsatz": "Bontrager Line Comp 30",
  "Reifen": "Bontrager Brevard Pro XR, Tubeless-Ready, Dual-Mischung, Aramidwulstkern, 60 TPI, 27.5 x 2.50",
  "Rahmenmaterial": "Aluminium",
  "Gabel": "RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealth Achse, 170 mm Federweg",
  "Dämpfer": "RockShox Super Deluxe Select+ RT, 205 x 65 mm",
  "Ladegerät": "Bosch Standardladegerät 2 A, 230 V, Smart System",
  "Laufradgröße": "29 Zoll",
  "Kette": "Shimano SLX M7100, 12fach",
  "Bremstyp": "hydraulische Scheibenbremse",
  "Schaltungsart": "Kettenschaltung",
  "Ganganzahl": "12",
  "Schalthebel": "Shimano SLX M7100, 12fach",
  "Zahnkränze": "Shimano Deore M6100, 10-51 Z., 12fach",
  "Lenker": "Bontrager Line, Aluminium, 35 mm, 27,5 mm Rise, 780 mm Breite",
  "Griffe": "Bontrager XR Trail Comp, Nylonklemme",
  "Vorbau": "Bontrager Elite, 35 mm, 0 Grad, 45 mm Länge",
  "Sattel": "Bontrager Verse P3, Stahlstreben",
  "Sattelstütze": "Bontrager Line Dropper, 150 mm Hub, MaxFlow, interne Zugführung, 34,9 mm, 410 mm Länge",
  "Pedale": "Rutschfeste Pedale mit Reflektoren",
  "Rahmeninformation": "Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachse, 160 mm Federweg",
  "Rahmenform": "Diamant",
  "Straßenausstattung": "nein",
  "Modelljahr": "2026",
  "Typ": "unisex",
  "Zul. Gesamtgewicht (kg)": "136"
}

Raw adapter output

{
  "retailer": "lucky-bike",
  "retailerProductId": "lb54229_dark star",
  "productUrl": "https://www.lucky-bike.de/Fahrraeder/E-Bike/E-MTB-Fully/Trek-Rail-8-Gen-5-2026-M-dark-star.html",
  "extractionMethod": "public-search-api",
  "sourceCategory": "e-bike",
  "rawTitle": "Trek Rail+ 8 Gen 5 2026",
  "rawBrand": "Trek",
  "price": 4799.99,
  "originalPrice": 5499,
  "currency": "EUR",
  "imageUrl": "https://images.lucky-bike.de/out/pictures/generated/product/1/540_340_75/trek-rail-plus-8-gen-5-dark-star-94610-01.jpg",
  "rawSpecifications": {
    "Akkutyp": "Bosch PowerTube 800 Wh, Smart System",
    "Display/Bedieneinheit": "Bosch System-Controller BRC3100, Smart System",
    "Motor": "Bosch Smart System Performance Line CX BDU38, 250 Watt, 85 Nm, bis 32 km/h (max. Unterstützung bis 25 km/h in EU und APAC)",
    "Schaltwerk": "Shimano XT M8100, langer Käfig",
    "Bremse": "Hydraulische 4-Kolben-Scheibenbremse SRAM DB 8",
    "Laufradsatz": "Bontrager Line Comp 30",
    "Reifen": "Bontrager Brevard Pro XR, Tubeless-Ready, Dual-Mischung, Aramidwulstkern, 60 TPI, 27.5 x 2.50",
    "Rahmenmaterial": "Aluminium",
    "Gabel": "RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealth Achse, 170 mm Federweg",
    "Dämpfer": "RockShox Super Deluxe Select+ RT, 205 x 65 mm",
    "Ladegerät": "Bosch Standardladegerät 2 A, 230 V, Smart System",
    "Laufradgröße": "29 Zoll",
    "Kette": "Shimano SLX M7100, 12fach",
    "Bremstyp": "hydraulische Scheibenbremse",
    "Schaltungsart": "Kettenschaltung",
    "Ganganzahl": "12",
    "Schalthebel": "Shimano SLX M7100, 12fach",
    "Zahnkränze": "Shimano Deore M6100, 10-51 Z., 12fach",
    "Lenker": "Bontrager Line, Aluminium, 35 mm, 27,5 mm Rise, 780 mm Breite",
    "Griffe": "Bontrager XR Trail Comp, Nylonklemme",
    "Vorbau": "Bontrager Elite, 35 mm, 0 Grad, 45 mm Länge",
    "Sattel": "Bontrager Verse P3, Stahlstreben",
    "Sattelstütze": "Bontrager Line Dropper, 150 mm Hub, MaxFlow, interne Zugführung, 34,9 mm, 410 mm Länge",
    "Pedale": "Rutschfeste Pedale mit Reflektoren",
    "Rahmeninformation": "Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachse, 160 mm Federweg",
    "Rahmenform": "Diamant",
    "Straßenausstattung": "nein",
    "Modelljahr": "2026",
    "Typ": "unisex",
    "Zul. Gesamtgewicht (kg)": "136"
  },
  "rawFeatures": [
    "Long-Travel-E-MTB mit starker Bosch Motorisierung, RockShox Fahrwerk und XT Schaltwerk",
    "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": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": null,
      "price": null
    }
  ],
  "availabilityText": "3 of 3 sizes orderable",
  "fetchedAt": "2026-09-26T07:52:05.733Z",
  "sourceMeta": {
    "sku": "0094610.002",
    "mpn": "5329135",
    "ldAvailability": "http://schema.org/InStock",
    "weightNote": "Maximales Gesamtgewicht von Fahrrad, Fahrer und Gepäck in kg",
    "colour": "dark star",
    "articleNumber": "0094610.002",
    "ean": "197216100478",
    "badges": null,
    "reductionPercent": 12,
    "feedSizes": [
      "M",
      "L",
      "XL"
    ],
    "parentSizes": "M, L, XL"
  },
  "listingPath": [
    "E-Bike",
    "E-MTB Fully"
  ]
}

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