← Review table (mtb) · shopper page
zweirad-stadler:bulls-helium-disc-mountainbike-hardtail-26-grau · source URL · confidence 0.78
Can win a band.
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| 32 cm = XXS | XXS | — | unknown | unsupported | yes | listing price | — |
| mapping | unsupported |
|---|---|
| reason | Bulls publishes no defensible conventional equivalence for its letter sizes. BULLS publishes a rider-height chart only ('Körpergröße' -> 'empfohlene Rahmengröße', XS 135-160 … XL 185-200 cm) with no centimetre equivalence, and its own chart stops at XL. So no letter is mapped. One retailer dual label ('XXL = 60 cm' on an Alpine Hawk) is left standing as listing-specific evidence because it sits on the conventional scale and there is no manufacturer evidence that it is a measurement — but it is a single unverified claim and is recorded as a residual risk. |
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:zweirad-stadler / parse | Bulls |
| model | retailer:zweirad-stadler / derived | Bulls Helium Disc Mountainbike Hardtail 26" grau |
| category | retailer:zweirad-stadler / parse | Mountainbike |
| frameMaterial | retailer:zweirad-stadler / parse | Aluminium |
| groupsetFamily | retailer:zweirad-stadler / dictionary | Shimano Tourney |
| electronicShifting | retailer:zweirad-stadler / derived | Shimano Tourney |
| brakes | retailer:zweirad-stadler / parse | Mechanische Scheibenbremsen |
| suspension | retailer:zweirad-stadler / derived | Hardtail |
| fork | retailer:zweirad-stadler / parse | SR Suntour XCE |
| dropperPost | retailer:zweirad-stadler / derived | seatpost row "Aluminium" names no dropper, in a 18-field spec table |
| beltDrive | retailer:zweirad-stadler / parse | Kettenschaltung |
| wheelSize | retailer:zweirad-stadler / parse | 26 |
| powerMeter | retailer:zweirad-stadler / derived | absent from a 18-field spec table |
| availability | retailer:zweirad-stadler / derived | 1 of 1 sizes orderable |
info single-size-only — Only one size is in stock (32 cm = XXS).info wheel-material-unknown — Wheel material could not be established.{
"frameScore": 11,
"drivetrainScore": 3,
"wheelScore": 5,
"extrasScore": -2,
"suspensionScore": 0,
"weightAdjustment": 0,
"equipmentValue": 17,
"notes": [
"Shimano Tourney = 3.",
"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 \"mechanical-disc\" -2.",
"Weight not published: no weight adjustment either way.",
"Fork series not stated: scored at the bottom of the fork ladder rather than assumed."
],
"marketPrice": 556,
"valueScore": 1.116,
"savingsVsMarket": 58
}
{
"requested": [
"wheelMaterial",
"wheelTier",
"weightKg"
],
"applied": [],
"rejected": [],
"notes": "Crank (Kurbel: STYX) and derailleur (Schaltwerk: Shimano Tourney) are from different suppliers, so mixedGroupset=true. Source does not state wheel rim material or wheelset model, nor the complete-bike weight.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "Material: Aluminium",
"confidence": 0.95
},
"groupsetBrand": {
"value": "Shimano",
"evidence": "Schaltwerk: Shimano Tourney",
"confidence": 0.95
},
"groupsetFamily": {
"value": "Tourney",
"evidence": "Schaltwerk: Shimano Tourney",
"confidence": 0.95
},
"electronicShifting": {
"value": "false",
"evidence": "21-Gang-Kettenschaltung",
"confidence": 0.9
},
"speeds": {
"value": "21",
"evidence": "Gänge: 21-Gang",
"confidence": 0.95
},
"mixedGroupset": {
"value": "true",
"evidence": "Schaltwerk: Shimano Tourney\nKurbel: STYX",
"confidence": 0.9
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"wheelTier": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"brakes": {
"value": "mechanical-disc",
"evidence": "Mechanische Scheibenbremsen",
"confidence": 0.95
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"notes": "Crank (Kurbel: STYX) and derailleur (Schaltwerk: Shimano Tourney) are from different suppliers, so mixedGroupset=true. Source does not state wheel rim material or wheelset model, nor the complete-bike weight."
}
}
{
"id": "zweirad-stadler:bulls-helium-disc-mountainbike-hardtail-26-grau",
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-helium-disc-mountainbike-hardtail-26-grau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/mountainbikes/hardtail/hardtail-26/bulls-helium-disc-mountainbike-hardtail-26-grau.html",
"brand": "Bulls",
"model": "Helium Disc Mountainbike Hardtail 26\" grau",
"modelYear": null,
"category": "mtb",
"categoryBasis": "stated",
"sourceCategory": "mtb",
"price": 498,
"originalPrice": 779,
"currency": "EUR",
"discountPercent": 36,
"frameMaterial": "aluminium",
"frameModel": null,
"frameTier": null,
"groupsetBrand": "Shimano",
"groupsetFamily": "Tourney",
"groupsetGeneration": null,
"electronicShifting": false,
"speeds": null,
"mixedGroupset": false,
"groupsetComponents": {
"rearDerailleur": "Tourney"
},
"groupsetTierSpread": 0,
"crank": "STYX",
"cassette": null,
"brakes": "mechanical-disc",
"brakePistons": null,
"brakeTier": "unknown",
"suspension": "front",
"fork": {
"make": "SR Suntour",
"line": "XCE",
"tier": "unknown",
"travelMm": 80
},
"rearShock": null,
"dropperPost": false,
"beltDrive": false,
"hubDynamo": null,
"rack": null,
"mudguards": null,
"chaincase": null,
"kickstand": null,
"lighting": null,
"wheelSize": "26",
"wheelset": null,
"wheelMaterial": "unknown",
"wheelTier": "unknown",
"tyres": "STYX Ace of Pace",
"weightKg": null,
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "32 cm = XXS",
"size": "XXS",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
}
],
"seller": null,
"availability": "limited",
"gtins": [],
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-helum-disc-mountainbike-grau-26-134907-a.jpg",
"rawTitle": "Bulls Helium Disc Mountainbike Hardtail 26\" grau",
"fetchedAt": "2026-09-19T06:33:19.578Z",
"normalizationConfidence": 0.78,
"warnings": [
{
"code": "single-size-only",
"message": "Only one size is in stock (32 cm = XXS).",
"severity": "info"
},
{
"code": "wheel-material-unknown",
"message": "Wheel material could not be established.",
"severity": "info"
}
]
}
{
"Material": "Aluminium",
"Farbe": "grau",
"Gabel": "SR Suntour XCE",
"Federweg Gabel": "80 mm",
"Schaltung": "Kettenschaltung",
"Gänge": "21-Gang",
"Schaltwerk": "Shimano Tourney",
"Bremsenart": "Mechanische Scheibenbremsen",
"Bremsen": "Tektro",
"Kurbel": "STYX",
"Lenker": "Aluminium",
"Vorbau": "Aluminium",
"Sattelstütze": "Aluminium",
"Laufradgröße": "26\"",
"Reifen": "STYX Ace of Pace",
"Rahmenform": "Hardtail",
"Herstellerfarbe": "dark chrome silver matt",
"Reifengröße": "26\""
}
{
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-helium-disc-mountainbike-hardtail-26-grau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/mountainbikes/hardtail/hardtail-26/bulls-helium-disc-mountainbike-hardtail-26-grau.html",
"extractionMethod": "server-html",
"sourceCategory": "mtb",
"rawTitle": "Bulls Helium Disc Mountainbike Hardtail 26\" grau",
"rawBrand": "Bulls",
"price": 498,
"originalPrice": 779,
"currency": "EUR",
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-helum-disc-mountainbike-grau-26-134907-a.jpg",
"rawSpecifications": {
"Material": "Aluminium",
"Farbe": "grau",
"Gabel": "SR Suntour XCE",
"Federweg Gabel": "80 mm",
"Schaltung": "Kettenschaltung",
"Gänge": "21-Gang",
"Schaltwerk": "Shimano Tourney",
"Bremsenart": "Mechanische Scheibenbremsen",
"Bremsen": "Tektro",
"Kurbel": "STYX",
"Lenker": "Aluminium",
"Vorbau": "Aluminium",
"Sattelstütze": "Aluminium",
"Laufradgröße": "26\"",
"Reifen": "STYX Ace of Pace",
"Rahmenform": "Hardtail",
"Herstellerfarbe": "dark chrome silver matt",
"Reifengröße": "26\""
},
"rawFeatures": [
"32 cm = XXS 4-8 Werktage",
"0% Finanzierung ab 49,80 € möglich",
"Dienstrad-Leasing möglich",
"14 Tage kostenloses Rückgaberecht",
"Fahrrad vollständig montiert und mit wenigen Handgriffen fahrbereit",
"Speziell abgestimmte Rahmengeometrie und Komponenten (Sattel, Lenker, Vorbau)",
"Komfortable SR Suntour XCE Federgabel",
"Bewährte 21-Gang-Kettenschaltung von Shimano für jede Steigung",
"Mechanische Tektro Scheibenbremsen für volle Kontrolle bei jedem Wetter",
"Leichtrollende Ace of Pace Reifen für optimalen Grip auf Asphalt und Schotter",
"Dank der sportlich-entspannten Rahmengeometrie schalten Fahrer im Sattel des Bulls Helium Disc sofort auf Genussmodus um. Die STYX Komponenten, wie Kurbel, Lenker und Vorbau, sind exakt so dimensioniert, dass sie ein ermüdungsfreies und sicheres Fahrgefühl garantieren.",
"Die robusten Laufräder in Kombination mit der Ace of Pace Profilbereifung sind echte Allrounder. Das Profil ist so konzipiert, dass es auf losem Waldboden kräftig zupackt, auf asphaltierten Straßen jedoch einen geringen Rollwiderstand bietet. Die integrierte SR Suntour XCE Federgabel schluckt Unebenheiten wie Wurzeln oder Schlaglöcher souverän weg und schont so die Handgelenke."
],
"rawSizes": [
{
"rawSize": "32 cm = XXS",
"size": "XXS",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
}
],
"availabilityText": "1 of 1 sizes orderable",
"fetchedAt": "2026-09-19T06:33:19.578Z",
"sourceMeta": {
"savingBadge": "281 € gespartauf UVP",
"deliveryWindows": [
"32 cm = XXS 4-8 Werktage"
]
}
}