Backroad GRX 820

rosebikes:rose-backroad-grx-820-2725742 · source URL · confidence 0.95

Eligibility

Can win a band.

Size decisions

retailer label	alpha	comparable cm	match	mapping	in stock	variant price	evidence
XS	XS	—	unknown	unsupported	yes	€2.850	—
S	S	—	unknown	unsupported	yes	€2.850	—
M	M	—	unknown	unsupported	yes	€2.850	—
M/L	M/L	—	unknown	unsupported	yes	€2.850	—
L	L	—	unknown	unsupported	yes	€2.850	—
XL	XL	—	unknown	unsupported	yes	€2.850	—

retailer label

alpha

comparable cm

match

mapping

in stock

variant price

evidence

—

unknown

unsupported

yes

€2.850

—

unknown

unsupported

yes

€2.850

—

unknown

unsupported

yes

€2.850

—

M/L

—

unknown

unsupported

yes

€2.850

—

unknown

unsupported

yes

€2.850

—

unknown

unsupported

yes

€2.850

—

mapping	unsupported
reason	ROSE publishes no defensible conventional equivalence for its letter sizes. ROSE publishes a rider-height range per letter size and nothing else — no geometry table at all on its product pages, and its own Größenberatung covers clothing only, not frames. A height range alone does not establish which conventional centimetre size a letter corresponds to, so ROSE bikes appear when a shopper picks a letter, not a centimetre.

mapping

unsupported

reason

ROSE publishes no defensible conventional equivalence for its letter sizes. ROSE publishes a rider-height range per letter size and nothing else — no geometry table at all on its product pages, and its own Größenberatung covers clothing only, not frames. A height range alone does not establish which conventional centimetre size a letter corresponds to, so ROSE bikes appear when a shopper picks a letter, not a centimetre.

A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 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:rosebikes / parse Rose

model retailer:rosebikes / derived Backroad GRX 820

category retailer:rosebikes / parse Backroad

groupsetFamily retailer:rosebikes / dictionary Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm | Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm || Shimano GRX RD-RX822, 12-fach 12-fach

electronicShifting retailer:rosebikes / derived Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm | Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm || Shimano GRX RD-RX822, 12-fach 12-fach

speeds retailer:rosebikes / parse 12-fach

brakes retailer:rosebikes / dictionary component code BL-RX820

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

fork retailer:rosebikes / dictionary Rose Backroad ADV, terra | Rose Backroad ADV, lions mane

dropperPost retailer:rosebikes / derived seatpost row "Rose Backroad ADV, Standard XS-345mm | Rose Backroad ADV, St" names no dropper, in a 18-field spec table

weightKg retailer:rosebikes / parse Gewicht: 9,6 kg1 und verfügt über die mechanische Shimano GRX RX820 Schaltgruppe mit 1x12 Gängen und einer Übersetzung mit 40 Zähnen vorn sowie 10-51 Zähnen hinten

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

availability retailer:rosebikes / derived InStock

frameMaterial ai / ai (0.95) Carbon-Rahmen

wheelMaterial ai / ai (0.95) robusten Rose G30 Laufrädern aus Aluminium (25 mm Maulweite)

field	source	evidence
brand	`retailer:rosebikes` / parse	Rose
model	`retailer:rosebikes` / derived	Backroad GRX 820
category	`retailer:rosebikes` / parse	Backroad
groupsetFamily	`retailer:rosebikes` / dictionary	Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm \| Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm \|\| Shimano GRX RD-RX822, 12-fach 12-fach
electronicShifting	`retailer:rosebikes` / derived	Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm \| Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm \|\| Shimano GRX RD-RX822, 12-fach 12-fach
speeds	`retailer:rosebikes` / parse	12-fach
brakes	`retailer:rosebikes` / dictionary	component code BL-RX820
suspension	`retailer:rosebikes` / derived	no suspension fork and no rear shock on a drop-bar listing
fork	`retailer:rosebikes` / dictionary	Rose Backroad ADV, terra \| Rose Backroad ADV, lions mane
dropperPost	`retailer:rosebikes` / derived	seatpost row "Rose Backroad ADV, Standard XS-345mm \| Rose Backroad ADV, St" names no dropper, in a 18-field spec table
weightKg	`retailer:rosebikes` / parse	Gewicht: 9,6 kg1 und verfügt über die mechanische Shimano GRX RX820 Schaltgruppe mit 1x12 Gängen und einer Übersetzung mit 40 Zähnen vorn sowie 10-51 Zähnen hinten
powerMeter	`retailer:rosebikes` / derived	absent from a 18-field spec table
availability	`retailer:rosebikes` / derived	InStock
frameMaterial	`ai` / ai (0.95)	Carbon-Rahmen
wheelMaterial	`ai` / ai (0.95)	robusten Rose G30 Laufrädern aus Aluminium (25 mm Maulweite)

Warnings

none

Score breakdown

{
  "frameScore": 26,
  "drivetrainScore": 20,
  "wheelScore": 5,
  "extrasScore": 0,
  "suspensionScore": 0,
  "weightAdjustment": 1.6,
  "equipmentValue": 52.6,
  "notes": [
    "Shimano GRX = 20.",
    "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 gravel.",
    "9.6 kg vs 10.4 kg gravel reference = +1.6."
  ],
  "marketPrice": 2718,
  "valueScore": 0.954,
  "savingsVsMarket": -132
}

AI normalization

{
  "requested": [
    "frameMaterial",
    "wheelMaterial",
    "wheelTier"
  ],
  "applied": [
    "frameMaterial",
    "wheelMaterial"
  ],
  "rejected": [],
  "notes": "Wheelset is a Rose house model (Rose G30). Per rules, unrecognised house-brand wheelsets should not be assigned a wheelTier even though material is stated. The cassette is Shimano SLX (different family than GRX), so mixedGroupset=true. Brake type is not explicitly stated as hydraulic or mechanical in the source; only brake component codes are listed, so brakes is left null.",
  "raw": {
    "frameMaterial": {
      "value": "carbon",
      "evidence": "Carbon-Rahmen",
      "confidence": 0.95
    },
    "groupsetBrand": {
      "value": "Shimano",
      "evidence": "mechanische Shimano GRX RX820 Schaltgruppe",
      "confidence": 0.95
    },
    "groupsetFamily": {
      "value": "GRX",
      "evidence": "mechanische Shimano GRX RX820 Schaltgruppe",
      "confidence": 0.95
    },
    "electronicShifting": {
      "value": "false",
      "evidence": "mechanische Shimano GRX RX820 Schaltgruppe",
      "confidence": 0.95
    },
    "speeds": {
      "value": "12",
      "evidence": "1x12 Gängen",
      "confidence": 0.95
    },
    "mixedGroupset": {
      "value": "true",
      "evidence": "Zahnkranz: Shimano SLX, CS-M7100-12, 12-fach",
      "confidence": 0.8
    },
    "wheelMaterial": {
      "value": "aluminium",
      "evidence": "robusten Rose G30 Laufrädern aus Aluminium (25 mm Maulweite)",
      "confidence": 0.95
    },
    "wheelTier": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "brakes": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "weightKg": {
      "value": "9.6",
      "evidence": "wiegt ca. 9,6 kg1",
      "confidence": 0.9
    },
    "powerMeter": {
      "value": null,
      "evidence": null,
      "confidence": 0
    },
    "notes": "Wheelset is a Rose house model (Rose G30). Per rules, unrecognised house-brand wheelsets should not be assigned a wheelTier even though material is stated. The cassette is Shimano SLX (different family than GRX), so mixedGroupset=true. Brake type is not explicitly stated as hydraulic or mechanical in the source; only brake component codes are listed, so brakes is left null."
  }
}

Normalized record

{
  "id": "rosebikes:rose-backroad-grx-820-2725742",
  "retailer": "rosebikes",
  "retailerProductId": "rose-backroad-grx-820-2725742",
  "productUrl": "https://www.rosebikes.de/p/rose-backroad-grx-820-2725742",
  "brand": "ROSE",
  "model": "Backroad GRX 820",
  "modelYear": null,
  "category": "gravel",
  "categoryBasis": "stated",
  "sourceCategory": "gravel",
  "price": 2850,
  "originalPrice": 2900,
  "currency": "EUR",
  "discountPercent": 2,
  "frameMaterial": "carbon",
  "frameModel": "Rose Backroad, terra XS 50cm | Rose Backroad, terra S 53cm | Rose Backroad, terra M 55cm | Rose Backroad, terra M/L 57cm | Rose Backroad, terra L 59cm | Rose Ba",
  "frameTier": null,
  "groupsetBrand": "Shimano",
  "groupsetFamily": "GRX",
  "groupsetGeneration": null,
  "electronicShifting": false,
  "speeds": 12,
  "mixedGroupset": false,
  "groupsetComponents": {
    "shifters": "GRX",
    "rearDerailleur": "GRX",
    "crank": "GRX"
  },
  "groupsetTierSpread": 0,
  "crank": "Shimano FC-RX820-1, GRX, 40Z, 12-fach, 170mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 172,5mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 175mm",
  "cassette": "Shimano SLX, CS-M7100-12, 12-fach, 10-51",
  "brakes": "hydraulic-disc",
  "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": null,
  "lighting": null,
  "wheelSize": null,
  "wheelset": null,
  "wheelMaterial": "aluminium",
  "wheelTier": "unknown",
  "tyres": "Continental Terra Adventure, schw/schw. 700x45C",
  "weightKg": 9.6,
  "powerMeter": false,
  "powerMeterKind": null,
  "availableSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 2850
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 174,
      "price": 2850
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 154,
      "price": 2850
    },
    {
      "rawSize": "M/L",
      "size": "M/L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 177,
      "price": 2850
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 168,
      "price": 2850
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 27,
      "price": 2850
    }
  ],
  "seller": null,
  "availability": "in-stock",
  "gtins": [],
  "imageUrl": "https://cdn.rosebikes.de/images/6AA8B2FC384A0D06A626C1E4955E5ECD.png?im=Resize=(800,800);BackgroundColor=ffffff",
  "rawTitle": "Backroad GRX 820",
  "fetchedAt": "2026-09-19T06:36:26.113Z",
  "normalizationConfidence": 0.95,
  "warnings": []
}

Parsed specification table

{
  "Rahmen": "Rose Backroad, terra XS 50cm | Rose Backroad, terra S 53cm | Rose Backroad, terra M 55cm | Rose Backroad, terra M/L 57cm | Rose Backroad, terra L 59cm | Rose Backroad, terra XL 62cm",
  "Gabel": "Rose Backroad ADV, terra | Rose Backroad ADV, lions mane",
  "Reifen": "Continental Terra Adventure, schw/schw. 700x45C",
  "Kurbel": "Shimano FC-RX820-1, GRX, 40Z, 12-fach, 170mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 172,5mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 175mm",
  "Kettenführung": "Wolf Tooth LoneWolf, schwarz",
  "Zahnkranz": "Shimano SLX, CS-M7100-12, 12-fach, 10-51",
  "Schaltwerk": "Shimano GRX RD-RX822, 12-fach 12-fach",
  "Kette": "Shimano Deore CN-M6100, Quick Link, 12-fach 122gl.",
  "Schaltbremshebel": "Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm | Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm",
  "Lenker": "Rose Gravel, 40cm | Rose Gravel, 42cm | Rose Gravel, 44cm",
  "Lenkerband": "Rose Gel-Comfort, schwarz",
  "Vorbau": "Rose ALR 2.0, schwarz sand 80mm | Rose ALR 2.0, schwarz sand 90mm | Rose ALR 2.0, schwarz sand 100mm",
  "Spacer": "Rose, standard | ACROS USBC Spacer, ø 10mm",
  "Sattel": "fi´zi:k Terra Argo X7 schwarz",
  "Sattelstütze": "Rose Backroad ADV, Standard XS-345mm | Rose Backroad ADV, Standard S -405mm | Rose Backroad ADV, Standard M-420mm | Rose Backroad ADV, Standard",
  "Pedale": "Pedale sind nicht im Lieferumfang enthalten",
  "Kategorie": "Gravel",
  "Gewicht": "9,6 kg1 und verfügt über die mechanische Shimano GRX RX820 Schaltgruppe mit 1x12 Gängen und einer Übersetzung mit 40 Zähnen vorn sowie 10-51 Zähnen hinten"
}

Raw adapter output

{
  "retailer": "rosebikes",
  "retailerProductId": "rose-backroad-grx-820-2725742",
  "productUrl": "https://www.rosebikes.de/p/rose-backroad-grx-820-2725742",
  "extractionMethod": "embedded-json",
  "sourceCategory": "gravel",
  "rawTitle": "Backroad GRX 820",
  "rawBrand": "Rose",
  "price": 2850,
  "originalPrice": 2900,
  "currency": "EUR",
  "imageUrl": "https://cdn.rosebikes.de/images/6AA8B2FC384A0D06A626C1E4955E5ECD.png?im=Resize=(800,800);BackgroundColor=ffffff",
  "rawSpecifications": {
    "Rahmen": "Rose Backroad, terra XS 50cm | Rose Backroad, terra S 53cm | Rose Backroad, terra M 55cm | Rose Backroad, terra M/L 57cm | Rose Backroad, terra L 59cm | Rose Backroad, terra XL 62cm",
    "Gabel": "Rose Backroad ADV, terra | Rose Backroad ADV, lions mane",
    "Reifen": "Continental Terra Adventure, schw/schw. 700x45C",
    "Kurbel": "Shimano FC-RX820-1, GRX, 40Z, 12-fach, 170mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 172,5mm | Shimano FC-RX820-1, GRX, 40Z, 12-fach, 175mm",
    "Kettenführung": "Wolf Tooth LoneWolf, schwarz",
    "Zahnkranz": "Shimano SLX, CS-M7100-12, 12-fach, 10-51",
    "Schaltwerk": "Shimano GRX RD-RX822, 12-fach 12-fach",
    "Kette": "Shimano Deore CN-M6100, Quick Link, 12-fach 122gl.",
    "Schaltbremshebel": "Shimano GRX BL-RX820, BR-RX820, 160 mm, schwarz 160mm | Shimano GRX ST-RX820, BR-RX820 schwarz 1700mm",
    "Lenker": "Rose Gravel, 40cm | Rose Gravel, 42cm | Rose Gravel, 44cm",
    "Lenkerband": "Rose Gel-Comfort, schwarz",
    "Vorbau": "Rose ALR 2.0, schwarz sand 80mm | Rose ALR 2.0, schwarz sand 90mm | Rose ALR 2.0, schwarz sand 100mm",
    "Spacer": "Rose, standard | ACROS USBC Spacer, ø 10mm",
    "Sattel": "fi´zi:k Terra Argo X7 schwarz",
    "Sattelstütze": "Rose Backroad ADV, Standard XS-345mm | Rose Backroad ADV, Standard S -405mm | Rose Backroad ADV, Standard M-420mm | Rose Backroad ADV, Standard",
    "Pedale": "Pedale sind nicht im Lieferumfang enthalten",
    "Kategorie": "Gravel",
    "Gewicht": "9,6 kg1 und verfügt über die mechanische Shimano GRX RX820 Schaltgruppe mit 1x12 Gängen und einer Übersetzung mit 40 Zähnen vorn sowie 10-51 Zähnen hinten"
  },
  "rawFeatures": [
    "Das Rose Backroad GRX 820 ist ein Adventure Gravel Bike mit Carbon-Rahmen, das den Fokus auf Fahrkomfort, Vielseitigkeit und Gepäckmitnahme legt. Features wie die hohe Reifenfreiheit von 53 mm, ein Rahmenfach sowie eine abnehmbare Rahmentasche plus ein USB-C Anschluss unter dem Lenker machen es zum perfekten Begleiter auch für lange Touren in abwechslungsreichem Gelände oder Bikepacking. Modellmerkmale und Vorteile: Das Backroad GRX 820 wiegt ca. 9,6 kg1 und verfügt über die mechanische Shimano GRX RX820 Schaltgruppe mit 1x12 Gängen und einer Übersetzung mit 40 Zähnen vorn sowie 10-51 Zähnen hinten. Dadurch bleibt die Schaltung unabhängig von Strom und Akkus, ist leicht zu warten und besitzt einen besonders leichten Berggang, der lange steile Anstiege auch untrainierten Fahrern ermöglicht. + Carbon Gravelbike zum Einstiegspreis + mechanisches Schalten ohne Akku + leichter Berggang für steile Anstiege Ideal für: • alle, die ein vielseitiges Carbon Gravel Bike zum attraktiven Einstiegspreis suchen • sportliche Gravel-Touren und mehrtägiges Bikepacking • lange Anstiege und wechselnde Untergründe • Touren von Asphalt bis grobem Schotter • Fahrer, die Komfort und Kontrolle für lange Strecken suchen Weniger geeignet für: • Gravel Racing mit Fokus auf maximale Aerodynamik • technische MTB-Trails oder aggressives Offroad-Fahren • Kurzstrecken mit reinem City- oder Alltagsfokus Highlights: • magnetisches Fidlock Taschensystem – passgenaue Rahmentasche (ca. 3 L) inklusive • integriertes Rahmenfach – Platz für Werkzeug und Ausrüstung, inkl. Tool Bag zum Befüllen • USB-C Ladeport – Strom für Geräte direkt am Lenker (Powerbank erforderlich) • 18 Anschraubpunkte – flexibles Anbringen von Flaschen, Taschen und weiterem Zubehör • Reifenfreiheit bis 53 mm – mehr Dämpfung und Grip in rauem Gelände • Carbon Sattelstütze mit tiefer Klemmung – Komfort durch Flex Weitere Ausstattung: Das Backroad GRX 825 Di2 kommt mit 45 mm breiten Terra Adventure Reifen von Continental auf robusten Rose G30 Laufrädern aus Aluminium (25 mm Maulweite). Ein Chainguide verhindert Kettenabwürfe und der fi´zi:k Terra Argo X7 Sattel sorgt für sportlichen Komfort. Lenker und Vorbau von Rose ermöglichen zudem das Anbringen von Sonderzubehör wie Lenkeraufsätzen oder einer Computer Mount. Lieferumfang: • 1 x Backroad GRX 820 • 1 x Backroad Frame Bag • 1 x Backroad Tool Bag, unbefüllt • 4 x Fidlock Schrauben, vormontiert • 1 x Rose Fidlock Tool • 4 x Blindstopfen • 1 x Micro-USB auf USB-C Adapter, vormontiert • 2 x Bremssicherung Hinweis: Pedale sind nicht Teil des Lieferumfangs. ¹ fertigungsbedingt sind Schwankungen bis +/- 5 % möglich, Referenz-Rahmenfarbe lions mane, Größe M/L, ohne Pedale und Taschen Hersteller: Rose Bikes GmbH, Schersweide 4, 46395 Bocholt, Germany, www.rosebikes.de"
  ],
  "rawSizes": [
    {
      "rawSize": "XS",
      "size": "XS",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 2,
      "price": 2850
    },
    {
      "rawSize": "S",
      "size": "S",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 174,
      "price": 2850
    },
    {
      "rawSize": "M",
      "size": "M",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 154,
      "price": 2850
    },
    {
      "rawSize": "M/L",
      "size": "M/L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 177,
      "price": 2850
    },
    {
      "rawSize": "L",
      "size": "L",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 168,
      "price": 2850
    },
    {
      "rawSize": "XL",
      "size": "XL",
      "sizeCm": null,
      "inStock": true,
      "stockCount": 27,
      "price": 2850
    }
  ],
  "availabilityText": "InStock",
  "fetchedAt": "2026-09-19T06:36:26.113Z",
  "sourceMeta": {
    "sku": "234960201",
    "modelPath": "/fahrräder/gravel/adventure/backroad",
    "variantCount": 12,
    "colours": [
      "terra",
      "lions mane"
    ],
    "trafficLights": [
      "XS:green",
      "S:green",
      "M:yellow",
      "M/L:green",
      "L:green",
      "XL:green",
      "XS:yellow",
      "S:green",
      "M:green",
      "M/L:green",
      "L:green",
      "XL:green"
    ]
  }
}

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