← Review table (e-bike) · shopper page
rabe-bike:74551 · source URL · confidence 0.83
Cannot win: e-bike bikes are not value-ranked yet (no e-bike-specific equipment model)
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| M | M | — | unknown | unsupported | yes | €3.949 | — |
| L | L | — | unknown | unsupported | no | listing price | — |
| XL | XL | — | unknown | unsupported | no | 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. |
A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 58 → nothing compatible · 60 → nothing compatible
Only listing of this configuration — nothing to merge.
| field | source | evidence |
|---|---|---|
| brand | retailer:rabe-bike / parse | Trek |
| model | retailer:rabe-bike / derived | Trek Rail+ 8 Gen 5 Powersurge 2025-2026 |
| modelYear | retailer:rabe-bike / parse | Trek Rail+ 8 Gen 5 Powersurge 2025-2026 |
| category | retailer:rabe-bike / derived | retailer taxonomy |
| frameMaterial | retailer:rabe-bike / parse | Aluminium |
| groupsetFamily | retailer:rabe-bike / dictionary | Shimano SLX M7100, 12fach || Shimano XT M8100, langer Käfig |
| electronicShifting | retailer:rabe-bike / derived | Shimano SLX M7100, 12fach || Shimano XT M8100, langer Käfig |
| speeds | retailer:rabe-bike / parse | 12fach |
| brakes | retailer:rabe-bike / parse | hydraulic disc |
| brakeTier | retailer:rabe-bike / dictionary | DB 8 |
| brakePistons | retailer:rabe-bike / parse | 4-Kolben |
| suspension | retailer:rabe-bike / derived | suspension fork "RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, kon" and no rear shock in a 23-field spec table |
| fork | retailer:rabe-bike / dictionary | RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealt |
| dropperPost | retailer:rabe-bike / derived | Line Dropper |
| powerMeter | retailer:rabe-bike / derived | absent from a 23-field spec table |
| availability | retailer:rabe-bike / derived | In Stock; delivery 3-5 days |
| ebike.motor | retailer:rabe-bike / parse | Bosch Performance Line CX 85Nm (BDU38) bis zu 120 Nm per Bosch App selbst freischaltbar | Bosch |
| ebike.motor.torqueNm | retailer:rabe-bike / parse | 85Nm |
| ebike.battery.capacityWh | retailer:rabe-bike / parse | 800 Wh |
| ebike.battery.integration | retailer:rabe-bike / parse | PowerTube |
| ebike.battery.removable | retailer:rabe-bike / parse | Removable |
| ebike.display | retailer:rabe-bike / parse | Bedieneinheit: Bosch System-Controller BRC3100, Smart System |
| ebike.maxSystemWeightKg | retailer:rabe-bike / parse | Systemgewicht: 136 kg |
info single-size-only — Only one size is in stock (M).info wheel-material-unknown — Wheel material could not be established.info mixed-groupset — Not a uniform groupset: {"shifters":"SLX","rearDerailleur":"XT","cassette":"Deore"}. Ranked on the shifting level, with a penalty.{
"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 (160 mm travel, which is not scored).",
"Brake series \"basic\" +0.",
"Dropper post +3."
],
"marketPrice": null,
"valueScore": null,
"savingsVsMarket": null
}
{
"requested": [
"wheelMaterial",
"wheelTier",
"weightKg"
],
"applied": [],
"rejected": [],
"notes": "The source states a 136 kg system weight, not the complete-bike weight. Wheel material is not stated. The drivetrain is mixed across Shimano XT, SLX, Deore, and an e*thirteen crank, so no single groupset family is assigned. Electronic shifting and power-meter status are not explicitly established.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "Rahmen: Alpha Platinum Aluminium",
"confidence": 1
},
"groupsetBrand": {
"value": "Shimano",
"evidence": "Schaltwerk: Shimano XT M8100, langer Käfig",
"confidence": 1
},
"groupsetFamily": {
"value": null,
"evidence": null,
"confidence": 0.98
},
"electronicShifting": {
"value": null,
"evidence": null,
"confidence": 0.95
},
"speeds": {
"value": "12",
"evidence": "Schalthebel: Shimano SLX M7100, 12fach",
"confidence": 1
},
"mixedGroupset": {
"value": "true",
"evidence": "Schaltwerk: Shimano XT M8100, langer Käfig\nSchalthebel: Shimano SLX M7100, 12fach\nKurbel: e*thirteen e*spec Plus, 160 mm Kurbelarmlänge\nKassette: Shimano Deore M6100, 10-51 Z., 12fach",
"confidence": 1
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0.98
},
"wheelTier": {
"value": null,
"evidence": null,
"confidence": 0.99
},
"brakes": {
"value": "hydraulic-disc",
"evidence": "Bremsen: SRAM DB 8 4-Kolben hydraulic disc",
"confidence": 1
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 1
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0.98
},
"notes": "The source states a 136 kg system weight, not the complete-bike weight. Wheel material is not stated. The drivetrain is mixed across Shimano XT, SLX, Deore, and an e*thirteen crank, so no single groupset family is assigned. Electronic shifting and power-meter status are not explicitly established."
}
}
{
"id": "rabe-bike:74551",
"retailer": "rabe-bike",
"retailerProductId": "74551",
"productUrl": "https://www.rabe-bike.de/en/trek-rail-8-gen-5-powersurge-2025",
"brand": "Trek",
"model": "Rail+ 8 Gen 5 Powersurge -",
"modelYear": 2026,
"category": "e-bike",
"categoryBasis": "route",
"sourceCategory": "e-bike",
"price": 3949,
"originalPrice": 5499,
"currency": "EUR",
"discountPercent": 28,
"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": "e*thirteen e*spec Plus, 160 mm Kurbelarmlänge",
"cassette": "Shimano Deore M6100, 10-51 Z., 12fach",
"brakes": "hydraulic-disc",
"brakePistons": 4,
"brakeTier": "basic",
"suspension": "front",
"fork": {
"make": "RockShox",
"line": "ZEB",
"tier": "mid",
"travelMm": 160
},
"rearShock": null,
"dropperPost": true,
"beltDrive": null,
"hubDynamo": null,
"rack": null,
"mudguards": null,
"chaincase": null,
"kickstand": null,
"lighting": null,
"wheelSize": null,
"wheelset": "Bontrager Line Comp 30, Tubeless Ready, 6-Loch-Scheibenaufnahme, Boost110, 15 mm Steckachse, 29\" / Bontrager Line Comp 30, Tubeless Ready, R",
"wheelMaterial": "unknown",
"wheelTier": "unknown",
"tyres": null,
"weightKg": null,
"ebike": {
"motor": {
"text": "Bosch Performance Line CX 85Nm (BDU38) bis zu 120 Nm per Bosch App selbst freischaltbar | Bosch",
"brand": "bosch",
"model": null,
"position": "unknown",
"torqueNm": 85,
"torqueSource": "retailer",
"ratedPowerW": null,
"peakPowerW": null
},
"battery": {
"text": "Bosch PowerTube 800 Wh, Smart System",
"capacityWh": 800,
"count": 1,
"integration": "integrated",
"removable": true
},
"speedClass": "unknown",
"rangeExtender": "unknown",
"display": "Bosch System-Controller BRC3100, Smart System",
"abs": null,
"autoShift": null,
"statedRangeKm": null,
"eDiscipline": "unknown",
"eDisciplineBasis": null,
"frameShape": "unknown",
"cargoType": "unknown",
"maxSystemWeightKg": 136,
"rackCapacityKg": null,
"weightIncludesBattery": null
},
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": 1,
"price": 3949
},
{
"rawSize": "L",
"size": "L",
"sizeCm": null,
"inStock": false,
"stockCount": 0,
"price": null
},
{
"rawSize": "XL",
"size": "XL",
"sizeCm": null,
"inStock": false,
"stockCount": 0,
"price": null
}
],
"seller": null,
"availability": "limited",
"gtins": [],
"imageUrl": "https://www.rabe-bike.de/img/450/300/resize/catalog/product/t/r/trek-rail-plus-8-gen-5-power-surge-2025-1_4.jpg",
"rawTitle": "Trek Rail+ 8 Gen 5 Powersurge 2025-2026",
"fetchedAt": "2026-09-26T08:33:45.322Z",
"normalizationConfidence": 0.83,
"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"
},
{
"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",
"frameShape"
],
"applied": [],
"rejected": [],
"notes": "The source names Bosch Performance Line CX and “BDU38”, but does not establish one exact motor model from the permitted vocabulary. Speed class and frame shape are not stated.",
"raw": {
"motorBrand": {
"value": "bosch",
"evidence": "Motorhersteller: Bosch",
"confidence": 1
},
"motorModel": {
"value": null,
"evidence": null,
"confidence": 0
},
"batteryWh": {
"value": "800",
"evidence": "Akku: Bosch PowerTube 800 Wh, Smart System",
"confidence": 1
},
"speedClass": {
"value": null,
"evidence": null,
"confidence": 0
},
"batteryIntegration": {
"value": "integrated",
"evidence": "Removable Integrated Battery (RIB 2.0)",
"confidence": 1
},
"frameShape": {
"value": null,
"evidence": null,
"confidence": 0
},
"notes": "The source names Bosch Performance Line CX and “BDU38”, but does not establish one exact motor model from the permitted vocabulary. Speed class and frame shape are not stated."
}
}
}
{
"Rahmen": "Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachse, 160 mm Federweg",
"Gabel": "RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealth Achse, 160 mm Federweg",
"Schaltwerk": "Shimano XT M8100, langer Käfig",
"Schalthebel": "Shimano SLX M7100, 12fach",
"Kurbel": "e*thirteen e*spec Plus, 160 mm Kurbelarmlänge",
"Kassette": "Shimano Deore M6100, 10-51 Z., 12fach",
"Kette": "Shimano SLX M7100, 12fach",
"Bremsen": "SRAM DB 8 4-Kolben hydraulic disc, SRAM CenterLine, 6-Loch-Scheibenaufnahme, abgerundete Kante, 200 mm",
"Laufradsatz": "Bontrager Line Comp 30, Tubeless Ready, 6-Loch-Scheibenaufnahme, Boost110, 15 mm Steckachse, 29\" / Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-Loch-Scheibenaufnahme, Boost148, 12 mm Steckachse, 27.5\"",
"Sattel": "Bontrager Verse P3, Stahlstreben",
"Sattelstütze": "Bontrager Line Dropper, interne Zugführung, 34,9 mm, 515 mm Länge, Hub: 170mm (M) / 200mm (L, XL)",
"Lenker": "Bontrager Line, Aluminium, 35 mm, 27,5 mm Rise, 780 mm Breite",
"Vorbau": "Bontrager Elite, 35 mm, 0 Grad, 45 mm Länge",
"Griffe": "Bontrager XR Trail Comp, Nylonklemme",
"Systemgewicht": "136 kg",
"Motor": "Bosch Performance Line CX 85Nm (BDU38) bis zu 120 Nm per Bosch App selbst freischaltbar",
"Akku": "Bosch PowerTube 800 Wh, Smart System",
"Bedieneinheit": "Bosch System-Controller BRC3100, Smart System",
"Ladegerät": "Bosch Standardladegerät 4 A, 230 V, Smart System",
"Rahmenmaterial": "Alu",
"Bremsenhersteller": "SRAM",
"Motorhersteller": "Bosch",
"Typ": "E-Bike"
}
{
"retailer": "rabe-bike",
"retailerProductId": "74551",
"productUrl": "https://www.rabe-bike.de/en/trek-rail-8-gen-5-powersurge-2025",
"extractionMethod": "server-html",
"sourceCategory": "e-bike",
"rawTitle": "Trek Rail+ 8 Gen 5 Powersurge 2025-2026",
"rawBrand": "Trek",
"price": 3949,
"originalPrice": 5499,
"currency": "EUR",
"imageUrl": "https://www.rabe-bike.de/img/450/300/resize/catalog/product/t/r/trek-rail-plus-8-gen-5-power-surge-2025-1_4.jpg",
"rawSpecifications": {
"Rahmen": "Alpha Platinum Aluminium, Removable Integrated Battery (RIB 2.0), konisches Steuerrohr, interne Control Freak Zugführung, Motor Armor, Boost148, 12-mm-Steckachse, 160 mm Federweg",
"Gabel": "RockShox ZEB Select, DebonAir Feder, Charger RC Dämpfer, konischer Gabelschaft, 44 mm Vorbiegung, Boost110, Maxle Stealth Achse, 160 mm Federweg",
"Schaltwerk": "Shimano XT M8100, langer Käfig",
"Schalthebel": "Shimano SLX M7100, 12fach",
"Kurbel": "e*thirteen e*spec Plus, 160 mm Kurbelarmlänge",
"Kassette": "Shimano Deore M6100, 10-51 Z., 12fach",
"Kette": "Shimano SLX M7100, 12fach",
"Bremsen": "SRAM DB 8 4-Kolben hydraulic disc, SRAM CenterLine, 6-Loch-Scheibenaufnahme, abgerundete Kante, 200 mm",
"Laufradsatz": "Bontrager Line Comp 30, Tubeless Ready, 6-Loch-Scheibenaufnahme, Boost110, 15 mm Steckachse, 29\" / Bontrager Line Comp 30, Tubeless Ready, Rapid Drive 108, 6-Loch-Scheibenaufnahme, Boost148, 12 mm Steckachse, 27.5\"",
"Sattel": "Bontrager Verse P3, Stahlstreben",
"Sattelstütze": "Bontrager Line Dropper, interne Zugführung, 34,9 mm, 515 mm Länge, Hub: 170mm (M) / 200mm (L, XL)",
"Lenker": "Bontrager Line, Aluminium, 35 mm, 27,5 mm Rise, 780 mm Breite",
"Vorbau": "Bontrager Elite, 35 mm, 0 Grad, 45 mm Länge",
"Griffe": "Bontrager XR Trail Comp, Nylonklemme",
"Systemgewicht": "136 kg",
"Motor": "Bosch Performance Line CX 85Nm (BDU38) bis zu 120 Nm per Bosch App selbst freischaltbar",
"Akku": "Bosch PowerTube 800 Wh, Smart System",
"Bedieneinheit": "Bosch System-Controller BRC3100, Smart System",
"Ladegerät": "Bosch Standardladegerät 4 A, 230 V, Smart System",
"Rahmenmaterial": "Alu",
"Bremsenhersteller": "SRAM",
"Motorhersteller": "Bosch",
"Typ": "E-Bike"
},
"rawFeatures": [
"The Trek Rail+ 8 Gen 5 is an electric aluminium enduro bike for big adventures. The Bosch Performance CX motor provides powerful support, while the large battery enables long tours. With 160 mm suspension travel on the fork, 160 mm on the shock and adjustable geometry, it masters any terrain effortlessly."
],
"rawSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": 1,
"price": 3949
},
{
"rawSize": "L",
"size": "L",
"sizeCm": null,
"inStock": false,
"stockCount": 0,
"price": null
},
{
"rawSize": "XL",
"size": "XL",
"sizeCm": null,
"inStock": false,
"stockCount": 0,
"price": null
}
],
"availabilityText": "In Stock; delivery 3-5 days",
"fetchedAt": "2026-09-26T08:33:45.322Z",
"sourceMeta": {
"sku": "74551",
"listingPath": "/en/e-bike/full-suspension",
"soldOut": 1,
"netFinalPrice": 3318.4873949579833,
"inStockSizesOnListing": [
"M"
],
"childCount": 3
},
"listingPath": [
"E-Bike",
"Full Suspension E-Bike"
]
}