← Review table (gravel) · shopper page
zweirad-stadler:bulls-trail-grinder-gravel-bike-28-blau · source URL · confidence 0.83
Can win a band.
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| 61 cm | — | 61 cm | exact scale | stated by the retailer | yes | listing price | 61 cm |
A shopper asking for: 54 → nothing compatible · 56 → nothing compatible · 58 → nothing compatible · 60 → 61 cm in stock
Canonical configuration: Bulls | Trail Grinder Gravel Bike 28" | GRX
Confidence: medium
| retailer | price | sizes in stock | |
|---|---|---|---|
| Zweirad Stadler | €1.688 | 61 cm | debug |
| Zweirad Stadler | €1.699 | S = 45 cm, L = 51 cm | debug |
| field | source | evidence |
|---|---|---|
| brand | retailer:zweirad-stadler / parse | Bulls |
| model | retailer:zweirad-stadler / derived | Bulls Trail Grinder Gravel Bike 28" blau |
| category | retailer:zweirad-stadler / parse | Grinder |
| frameMaterial | retailer:zweirad-stadler / parse | Aluminium |
| groupsetFamily | retailer:zweirad-stadler / dictionary | Shimano GRX || Shimano GRX |
| electronicShifting | retailer:zweirad-stadler / derived | Shimano GRX || Shimano GRX |
| speeds | retailer:zweirad-stadler / parse | 11-Gang |
| brakes | retailer:zweirad-stadler / parse | Hydraulische Scheibenbremsen |
| suspension | retailer:zweirad-stadler / derived | Starrgabel |
| fork | retailer:zweirad-stadler / dictionary | Starrgabel |
| dropperPost | retailer:zweirad-stadler / derived | seatpost row "Limotec Alpha 1" names no dropper, in a 23-field spec table |
| beltDrive | retailer:zweirad-stadler / parse | CN-HG6 |
| wheelSize | retailer:zweirad-stadler / parse | 28 |
| powerMeter | retailer:zweirad-stadler / derived | absent from a 23-field spec table |
| availability | retailer:zweirad-stadler / derived | 1 of 1 sizes orderable |
info single-size-only — Only one size is in stock (61 cm).info wheel-material-unknown — Wheel material could not be established.{
"frameScore": 11,
"drivetrainScore": 20,
"wheelScore": 5,
"extrasScore": 0,
"suspensionScore": 0,
"weightAdjustment": 0,
"equipmentValue": 36,
"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.",
"Weight not published: no weight adjustment either way."
],
"marketPrice": 1779,
"valueScore": 1.054,
"savingsVsMarket": 91
}
{
"requested": [
"wheelMaterial",
"wheelTier",
"weightKg"
],
"applied": [],
"rejected": [],
"notes": "Wheel rim model is given as 'Bulls XC-21 EVO TR' but the source does not state rim material or a recognised tier; cannot infer wheelMaterial or wheelTier. No complete-bike weight or power meter is stated.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "Material: Aluminium",
"confidence": 0.9
},
"groupsetBrand": {
"value": "Shimano",
"evidence": "Shimano GRX 11-Gang Gravel-Schaltung",
"confidence": 0.9
},
"groupsetFamily": {
"value": "GRX",
"evidence": "Shimano GRX",
"confidence": 0.9
},
"electronicShifting": {
"value": "false",
"evidence": "Kettenschaltung",
"confidence": 0.9
},
"speeds": {
"value": "11",
"evidence": "11-Gang",
"confidence": 0.9
},
"mixedGroupset": {
"value": "false",
"evidence": "Schaltwerk: Shimano GRX\nSchalthebel: Shimano GRX\nKurbel: Shimano GRX",
"confidence": 0.8
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"wheelTier": {
"value": null,
"evidence": "Felgen: Bulls XC-21 EVO TR",
"confidence": 0.5
},
"brakes": {
"value": "hydraulic-disc",
"evidence": "Hydraulische Scheibenbremsen",
"confidence": 0.9
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0.5
},
"notes": "Wheel rim model is given as 'Bulls XC-21 EVO TR' but the source does not state rim material or a recognised tier; cannot infer wheelMaterial or wheelTier. No complete-bike weight or power meter is stated."
}
}
{
"id": "zweirad-stadler:bulls-trail-grinder-gravel-bike-28-blau",
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-trail-grinder-gravel-bike-28-blau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-trail-grinder-gravel-bike-28-blau.html",
"brand": "Bulls",
"model": "Trail Grinder Gravel Bike 28\" blau",
"modelYear": null,
"category": "gravel",
"categoryBasis": "stated",
"sourceCategory": "gravel",
"price": 1688,
"originalPrice": 2399,
"currency": "EUR",
"discountPercent": 30,
"frameMaterial": "aluminium",
"frameModel": null,
"frameTier": null,
"groupsetBrand": "Shimano",
"groupsetFamily": "GRX",
"groupsetGeneration": null,
"electronicShifting": false,
"speeds": 11,
"mixedGroupset": false,
"groupsetComponents": {
"shifters": "GRX",
"rearDerailleur": "GRX",
"crank": "GRX"
},
"groupsetTierSpread": 0,
"crank": "Shimano GRX",
"cassette": "Shimano Deore CS-M5100 11-42T",
"brakes": "hydraulic-disc",
"brakePistons": null,
"brakeTier": "unknown",
"suspension": "none",
"fork": {
"make": null,
"line": null,
"tier": "rigid",
"travelMm": 0
},
"rearShock": null,
"dropperPost": false,
"beltDrive": false,
"hubDynamo": null,
"rack": null,
"mudguards": null,
"chaincase": null,
"kickstand": null,
"lighting": null,
"wheelSize": "28",
"wheelset": "Bulls XC-21 EVO TR",
"wheelMaterial": "unknown",
"wheelTier": "unknown",
"tyres": "VeeTire, 50-622",
"weightKg": null,
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "61 cm",
"size": "61",
"sizeCm": 61,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "7-14 Werktage"
}
],
"seller": null,
"availability": "limited",
"gtins": [],
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-28-trailgrinder-gravelbike-platinumblue-herren-133697a.jpg",
"rawTitle": "Bulls Trail Grinder Gravel Bike 28\" blau",
"fetchedAt": "2026-09-19T06:32:19.413Z",
"normalizationConfidence": 0.83,
"warnings": [
{
"code": "single-size-only",
"message": "Only one size is in stock (61 cm).",
"severity": "info"
},
{
"code": "wheel-material-unknown",
"message": "Wheel material could not be established.",
"severity": "info"
}
]
}
{
"Material": "Aluminium",
"Farbe": "blau",
"Gabel": "Starrgabel Carbon",
"Schaltung": "Kettenschaltung",
"Gänge": "11-Gang",
"Schaltwerk": "Shimano GRX",
"Schalthebel": "Shimano GRX",
"Bremsenart": "Hydraulische Scheibenbremsen",
"Bremsen": "Shimano BR-RX810",
"Bremshebel": "Shimano GRX ST-RX810-LA",
"Bremsscheiben": "160 mm CL",
"Kurbel": "Shimano GRX",
"Kassette": "Shimano Deore CS-M5100 11-42T",
"Kette": "Shimano CN-HG601-11",
"Lenker": "Bulls Gravel",
"Vorbau": "Bulls MTB-S CCS Slot Mount ready",
"Sattelstütze": "Limotec Alpha 1",
"Sattel": "Bulls Gravel",
"Laufradgröße": "28\"",
"Felgen": "Bulls XC-21 EVO TR",
"Reifen": "VeeTire, 50-622",
"Rahmenform": "Gravel",
"Herstellerfarbe": "platinum blue"
}
{
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-trail-grinder-gravel-bike-28-blau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-trail-grinder-gravel-bike-28-blau.html",
"extractionMethod": "server-html",
"sourceCategory": "gravel",
"rawTitle": "Bulls Trail Grinder Gravel Bike 28\" blau",
"rawBrand": "Bulls",
"price": 1688,
"originalPrice": 2399,
"currency": "EUR",
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-28-trailgrinder-gravelbike-platinumblue-herren-133697a.jpg",
"rawSpecifications": {
"Material": "Aluminium",
"Farbe": "blau",
"Gabel": "Starrgabel Carbon",
"Schaltung": "Kettenschaltung",
"Gänge": "11-Gang",
"Schaltwerk": "Shimano GRX",
"Schalthebel": "Shimano GRX",
"Bremsenart": "Hydraulische Scheibenbremsen",
"Bremsen": "Shimano BR-RX810",
"Bremshebel": "Shimano GRX ST-RX810-LA",
"Bremsscheiben": "160 mm CL",
"Kurbel": "Shimano GRX",
"Kassette": "Shimano Deore CS-M5100 11-42T",
"Kette": "Shimano CN-HG601-11",
"Lenker": "Bulls Gravel",
"Vorbau": "Bulls MTB-S CCS Slot Mount ready",
"Sattelstütze": "Limotec Alpha 1",
"Sattel": "Bulls Gravel",
"Laufradgröße": "28\"",
"Felgen": "Bulls XC-21 EVO TR",
"Reifen": "VeeTire, 50-622",
"Rahmenform": "Gravel",
"Herstellerfarbe": "platinum blue"
},
"rawFeatures": [
"0% Finanzierung ab 168,80 € möglich",
"Dienstrad-Leasing möglich",
"14 Tage kostenloses Rückgaberecht",
"Fahrrad vollständig montiert und mit wenigen Handgriffen fahrbereit",
"Hochwertiger Aluminium-Rahmen",
"Shimano GRX 11-Gang Gravel-Schaltung",
"Hydraulische Scheibenbremsen Shimano GRX",
"Breite Gravel-Bereifung"
],
"rawSizes": [
{
"rawSize": "61 cm",
"size": "61",
"sizeCm": 61,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "7-14 Werktage"
}
],
"availabilityText": "1 of 1 sizes orderable",
"fetchedAt": "2026-09-19T06:32:19.413Z",
"sourceMeta": {
"savingBadge": "711 € gespartauf UVP",
"deliveryWindows": [
"61 cm 7-14 Werktage"
]
}
}