← Review table (gravel) · shopper page
zweirad-stadler:bulls-grinder-1s-gravel-bike-28-grau · source URL · confidence 0.83
Can win a band.
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| S = 45 cm | S | — | unknown | unsupported — the listing's 45 cm is a frame measurement | yes | listing price | — |
| M = 48 cm | M | — | unknown | unsupported — the listing's 48 cm is a frame measurement | yes | listing price | — |
| L = 52 cm | L | — | unknown | unsupported — the listing's 52 cm is a frame measurement | yes | listing price | — |
| XL = 56 cm | XL | — | unknown | unsupported — the listing's 56 cm is a frame measurement | yes | listing price | — |
| mapping | unsupported |
|---|---|
| discarded figure | the listing prints 45 cm beside its letter size |
| reason | The centimetre figures retailers print for Bulls do not behave like size names (inconsistent), so they are read as frame measurements. See size-map.json. |
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 Grinder 1s Gravel Bike 28" grau |
| category | retailer:zweirad-stadler / parse | Grinder |
| frameMaterial | retailer:zweirad-stadler / parse | Aluminium |
| groupsetFamily | retailer:zweirad-stadler / dictionary | Sram Apex |
| electronicShifting | retailer:zweirad-stadler / derived | Sram Apex |
| speeds | retailer:zweirad-stadler / parse | 11-Gang |
| brakes | retailer:zweirad-stadler / parse | Mechanische Scheibenbremsen |
| suspension | retailer:zweirad-stadler / derived | no suspension fork and no rear shock on a drop-bar listing |
| fork | retailer:zweirad-stadler / dictionary | Carbon |
| dropperPost | retailer:zweirad-stadler / derived | seatpost row "Aluminium" names no dropper, in a 24-field spec table |
| beltDrive | retailer:zweirad-stadler / parse | Kettenschaltung |
| wheelSize | retailer:zweirad-stadler / parse | 28 |
| powerMeter | retailer:zweirad-stadler / derived | absent from a 24-field spec table |
| availability | retailer:zweirad-stadler / derived | 4 of 4 sizes orderable |
info wheel-material-unknown — Wheel material could not be established.{
"frameScore": 11,
"drivetrainScore": 19,
"wheelScore": 5,
"extrasScore": -2,
"suspensionScore": 0,
"weightAdjustment": 0,
"equipmentValue": 33,
"notes": [
"SRAM Apex = 19.",
"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."
],
"marketPrice": 1597,
"valueScore": 1.453,
"savingsVsMarket": 498
}
{
"requested": [
"wheelMaterial",
"wheelTier",
"weightKg"
],
"applied": [],
"rejected": [],
"notes": "Wheel rim listed as \"Felgen: Strongman, DDM-11\" with hub brands given, but the source does not state rim material or a recognised wheelset tier; therefore wheelMaterial and wheelTier are null. No complete-bike weight or power meter is mentioned. Mixed-groupset cannot be determined from the single listed 'Schaltwerk: Sram Apex' entry.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "Material: Aluminium",
"confidence": 0.9
},
"groupsetBrand": {
"value": "SRAM",
"evidence": "Schaltwerk: Sram Apex",
"confidence": 0.8
},
"groupsetFamily": {
"value": "Apex",
"evidence": "Schaltwerk: Sram Apex",
"confidence": 0.9
},
"electronicShifting": {
"value": "false",
"evidence": "Kettenschaltung",
"confidence": 0.7
},
"speeds": {
"value": "11",
"evidence": "Gänge: 11-Gang",
"confidence": 0.9
},
"mixedGroupset": {
"value": null,
"evidence": null,
"confidence": 0.3
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0.3
},
"wheelTier": {
"value": null,
"evidence": null,
"confidence": 0.3
},
"brakes": {
"value": "mechanical-disc",
"evidence": "Bremsenart: Mechanische Scheibenbremsen",
"confidence": 0.9
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 0.3
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0.3
},
"notes": "Wheel rim listed as \"Felgen: Strongman, DDM-11\" with hub brands given, but the source does not state rim material or a recognised wheelset tier; therefore wheelMaterial and wheelTier are null. No complete-bike weight or power meter is mentioned. Mixed-groupset cannot be determined from the single listed 'Schaltwerk: Sram Apex' entry."
}
}
{
"id": "zweirad-stadler:bulls-grinder-1s-gravel-bike-28-grau",
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-grinder-1s-gravel-bike-28-grau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1s-gravel-bike-28-grau.html",
"brand": "Bulls",
"model": "Grinder 1s Gravel Bike 28\" grau",
"modelYear": null,
"category": "gravel",
"categoryBasis": "stated",
"sourceCategory": "gravel",
"price": 1099,
"originalPrice": 1499,
"currency": "EUR",
"discountPercent": 27,
"frameMaterial": "aluminium",
"frameModel": null,
"frameTier": null,
"groupsetBrand": "SRAM",
"groupsetFamily": "Apex",
"groupsetGeneration": null,
"electronicShifting": false,
"speeds": 11,
"mixedGroupset": false,
"groupsetComponents": {
"rearDerailleur": "Apex"
},
"groupsetTierSpread": 0,
"crank": null,
"cassette": null,
"brakes": "mechanical-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": "Strongman, DDM-11 | Shimano | Formula",
"wheelMaterial": "unknown",
"wheelTier": "unknown",
"tyres": "VEE TIRE Co. Rail MPC",
"weightKg": null,
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "S = 45 cm",
"size": "S",
"sizeCm": 45,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "M = 48 cm",
"size": "M",
"sizeCm": 48,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "L = 52 cm",
"size": "L",
"sizeCm": 52,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "XL = 56 cm",
"size": "XL",
"sizeCm": 56,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
}
],
"seller": null,
"availability": "in-stock",
"gtins": [],
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-28-grinder-1-s-gravel-bike-grau-700227-a.jpg",
"rawTitle": "Bulls Grinder 1s Gravel Bike 28\" grau",
"fetchedAt": "2026-09-19T06:32:14.146Z",
"normalizationConfidence": 0.83,
"warnings": [
{
"code": "wheel-material-unknown",
"message": "Wheel material could not be established.",
"severity": "info"
}
]
}
{
"Material": "Aluminium",
"Rahmenform": "Gravel",
"Farbe": "grau",
"Herstellerfarbe": "alpine grey",
"Gabel": "Carbon",
"Gänge": "11-Gang",
"Schaltung": "Kettenschaltung",
"Schaltwerk": "Sram Apex",
"Bremsenart": "Mechanische Scheibenbremsen",
"Bremsen vorne": "Tektro MD-C510",
"Bremsen hinten": "Tektro MD-C510",
"Felgen": "Strongman, DDM-11",
"Speichen": "STAINLESS BLACK, 14Gx32H",
"Laufradgröße": "28\"",
"Reifen": "VEE TIRE Co. Rail MPC",
"Nabe vorne": "Shimano",
"Nabe hinten": "Formula",
"Sattel": "Velo",
"Sattelstütze": "Aluminium",
"Lenker": "Aluminium",
"Griffe": "Velo",
"Vorbau": "Aluminium",
"Steuersatz": "FSA",
"Sonstiges": "SP Connect"
}
{
"retailer": "zweirad-stadler",
"retailerProductId": "bulls-grinder-1s-gravel-bike-28-grau",
"productUrl": "https://shop.zweirad-stadler.de/fahrrad-shop/rennraeder/gravel-bike/bulls-grinder-1s-gravel-bike-28-grau.html",
"extractionMethod": "server-html",
"sourceCategory": "gravel",
"rawTitle": "Bulls Grinder 1s Gravel Bike 28\" grau",
"rawBrand": "Bulls",
"price": 1099,
"originalPrice": 1499,
"currency": "EUR",
"imageUrl": "https://shop.zweirad-stadler.de/out/pictures/generated/product/1/1500_1500_100/bulls-28-grinder-1-s-gravel-bike-grau-700227-a.jpg",
"rawSpecifications": {
"Material": "Aluminium",
"Rahmenform": "Gravel",
"Farbe": "grau",
"Herstellerfarbe": "alpine grey",
"Gabel": "Carbon",
"Gänge": "11-Gang",
"Schaltung": "Kettenschaltung",
"Schaltwerk": "Sram Apex",
"Bremsenart": "Mechanische Scheibenbremsen",
"Bremsen vorne": "Tektro MD-C510",
"Bremsen hinten": "Tektro MD-C510",
"Felgen": "Strongman, DDM-11",
"Speichen": "STAINLESS BLACK, 14Gx32H",
"Laufradgröße": "28\"",
"Reifen": "VEE TIRE Co. Rail MPC",
"Nabe vorne": "Shimano",
"Nabe hinten": "Formula",
"Sattel": "Velo",
"Sattelstütze": "Aluminium",
"Lenker": "Aluminium",
"Griffe": "Velo",
"Vorbau": "Aluminium",
"Steuersatz": "FSA",
"Sonstiges": "SP Connect"
},
"rawFeatures": [
"S = 45 cm 4-8 Werktage",
"M = 48 cm 4-8 Werktage",
"L = 52 cm 4-8 Werktage",
"XL = 56 cm 4-8 Werktage",
"0% Finanzierung ab 109,90 € möglich",
"Dienstrad-Leasing möglich",
"14 Tage kostenloses Rückgaberecht",
"Fahrrad vollständig montiert und mit wenigen Handgriffen fahrbereit",
"11-Gang Sram Apex Kettenschaltung",
"Tektro Mechanische Scheibenbremse",
"Vielseitige Montagepunkte: Zahlreiche Ösen für Gepäckträger, Schutzbleche und Flaschenhalter machen es zum idealen Reiserad.",
"Gravel-spezifische Bereifung: Top-Grip auf Schotterwegen bei gleichzeitig geringem Rollwiderstand auf der Straße."
],
"rawSizes": [
{
"rawSize": "S = 45 cm",
"size": "S",
"sizeCm": 45,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "M = 48 cm",
"size": "M",
"sizeCm": 48,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "L = 52 cm",
"size": "L",
"sizeCm": 52,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
},
{
"rawSize": "XL = 56 cm",
"size": "XL",
"sizeCm": 56,
"inStock": true,
"stockCount": null,
"price": null,
"deliveryNote": "4-8 Werktage"
}
],
"availabilityText": "4 of 4 sizes orderable",
"fetchedAt": "2026-09-19T06:32:14.146Z",
"sourceMeta": {
"savingBadge": "400 € gespartauf UVP",
"deliveryWindows": [
"S = 45 cm 4-8 Werktage",
"M = 48 cm 4-8 Werktage",
"L = 52 cm 4-8 Werktage",
"XL = 56 cm 4-8 Werktage"
]
}
}