← Review table (gravel) · shopper page
bikeexchange:megamo_jakar_30_flat_bar_2025 · source URL · confidence 0.78 · GTIN 8424733005002
Cannot win: category is mtb, not gravel; not-a-gravel-bike
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| M | M | — | unknown | unsupported | yes | €974,25 | — |
| mapping | unsupported |
|---|---|
| reason | Megamo publishes no defensible conventional equivalence for its letter sizes. No accessible official geometry or sizing documentation. Retailers list letters only. |
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:bikeexchange / parse | megamo |
| model | retailer:bikeexchange / derived | megamo Jakar 30 Flat-Bar |
| modelYear | retailer:bikeexchange / parse | Jahr: 2025 |
| category | retailer:bikeexchange / derived | flat or riser handlebar: "Flat Bar" |
| frameMaterial | retailer:bikeexchange / parse | aluminum |
| speeds | retailer:bikeexchange / parse | 10 speed |
| brakeTier | retailer:bikeexchange / dictionary | MT201 |
| brakePistons | retailer:bikeexchange / parse | Shimano caliper code MT201 |
| suspension | retailer:bikeexchange / derived | no suspension fork and no rear shock on a drop-bar listing |
| fork | retailer:bikeexchange / dictionary | Jakar Carbon fork |
| dropperPost | retailer:bikeexchange / derived | seatpost row "Alloy seat post" names no dropper, in a 20-field spec table |
| powerMeter | retailer:bikeexchange / derived | absent from a 20-field spec table |
| availability | retailer:bikeexchange / derived | sizes 1: 1 stocked, 0 gone, 0 unread |
| seller | retailer:bikeexchange / parse | M: 2Rad Jessen |
| groupsetFamily | ai / ai (0.9) | Shimano Cues |
blocking not-a-gravel-bike — Classified as mtb.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: {"crank":"CUES"}. Ranked on the shifting level, with a penalty.{
"frameScore": 11,
"drivetrainScore": 10,
"wheelScore": 5,
"extrasScore": 0,
"suspensionScore": 0,
"weightAdjustment": 0,
"equipmentValue": 26,
"notes": [
"Shimano CUES = 12.",
"Mixed groupset, but no crank or cassette below the family it is ranked as: no penalty.",
"10-speed -2.",
"Wheels unknown: scored level with basic aluminium, which is neither a reward for omitting the wheelset nor a penalty for naming a cheap one.",
"Weight not published: no weight adjustment either way."
],
"marketPrice": 1432,
"valueScore": 1.47,
"savingsVsMarket": 457.75
}
{
"requested": [
"groupsetFamily",
"wheelMaterial",
"wheelTier",
"brakes",
"weightKg"
],
"applied": [
"groupsetFamily"
],
"rejected": [],
"notes": "Groupset crank is listed as 'Shimano Cues' (family CUES). Rear derailleur 'Shimano RX-400' is named but RX-400 is not in the allowed vocabulary, so groupsetFamily is taken from the crank and mixedGroupset is set true because derailleur and crank are different. Wheel model 'Megamo SL 25 ASY - Gravel' is a vendor model with no material stated; wheel material and tier cannot be determined from the source. Brake model 'Shimano MT201' is listed but the source does not explicitly state brake type (hydraulic vs mechanical), so brakes left null. No bike weight or power meter is stated.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "New Jakar aluminum gravel-specific frame",
"confidence": 0.95
},
"groupsetBrand": {
"value": "Shimano",
"evidence": "Shimano Cues",
"confidence": 0.95
},
"groupsetFamily": {
"value": "CUES",
"evidence": "Shimano Cues",
"confidence": 0.9
},
"electronicShifting": {
"value": null,
"evidence": null,
"confidence": 0
},
"speeds": {
"value": "10",
"evidence": "Umwerfer hinten: Shimano RX-400, 10 speed",
"confidence": 0.9
},
"mixedGroupset": {
"value": "true",
"evidence": "Kurbelgarnitur: Shimano Cues\nUmwerfer hinten: Shimano RX-400, 10 speed",
"confidence": 0.75
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0
},
"wheelTier": {
"value": null,
"evidence": null,
"confidence": 0
},
"brakes": {
"value": null,
"evidence": null,
"confidence": 0
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 0
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0
},
"notes": "Groupset crank is listed as 'Shimano Cues' (family CUES). Rear derailleur 'Shimano RX-400' is named but RX-400 is not in the allowed vocabulary, so groupsetFamily is taken from the crank and mixedGroupset is set true because derailleur and crank are different. Wheel model 'Megamo SL 25 ASY - Gravel' is a vendor model with no material stated; wheel material and tier cannot be determined from the source. Brake model 'Shimano MT201' is listed but the source does not explicitly state brake type (hydraulic vs mechanical), so brakes left null. No bike weight or power meter is stated."
}
}
{
"id": "bikeexchange:megamo_jakar_30_flat_bar_2025",
"retailer": "bikeexchange",
"retailerProductId": "megamo_jakar_30_flat_bar_2025",
"productUrl": "https://www.bikeexchange.de/de-DE/products/megamo_jakar_30_flat_bar_2025?sku=MEG_0000624885",
"brand": "Megamo",
"model": "Jakar 30 Flat-Bar",
"modelYear": 2025,
"category": "mtb",
"categoryBasis": "inferred",
"sourceCategory": "gravel",
"price": 974.25,
"originalPrice": 1299,
"currency": "EUR",
"discountPercent": 25,
"frameMaterial": "aluminium",
"frameModel": "New Jakar aluminum gravel-specific frame",
"frameTier": null,
"groupsetBrand": "Shimano",
"groupsetFamily": "CUES",
"groupsetGeneration": null,
"electronicShifting": false,
"speeds": 10,
"mixedGroupset": true,
"groupsetComponents": {
"crank": "CUES"
},
"groupsetTierSpread": 0,
"crank": "Shimano Cues",
"cassette": null,
"brakes": "unknown",
"brakePistons": 2,
"brakeTier": "basic",
"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": "Megamo SL 25 ASY - Gravel | Megamo SL 25 ASY - Gravel // Riddler 700 Gravel 700 x 45c Tan Sidewall | Megamo SL 25 ASY - Gravel",
"wheelMaterial": "unknown",
"wheelTier": "unknown",
"tyres": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"weightKg": null,
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 974.25,
"seller": "2Rad Jessen",
"deliveryNote": "Reguläre Lieferzeit 7 Tage"
}
],
"seller": "2Rad Jessen",
"availability": "limited",
"gtins": [
"8424733005002"
],
"imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/d292a963ef86dc68fc73-8rchU3IB.png",
"rawTitle": "megamo Jakar 30 Flat-Bar",
"fetchedAt": "2026-09-19T05:20:21.720Z",
"normalizationConfidence": 0.78,
"warnings": [
{
"code": "not-a-gravel-bike",
"message": "Classified as mtb.",
"severity": "blocking"
},
{
"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: {\"crank\":\"CUES\"}. Ranked on the shifting level, with a penalty.",
"severity": "info"
}
]
}
{
"Rahmen": "New Jakar aluminum gravel-specific frame",
"Bremse vorne": "Shimano MT201",
"Bremse hinten": "Shimano MT201",
"Bremse": "Shimano MT201",
"Bremshebel": "Shimano MT201",
"Reifen vorne": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Reifen": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Laufrad vorne": "Megamo SL 25 ASY - Gravel",
"Laufrad hinten": "Megamo SL 25 ASY - Gravel",
"Reifen hinten": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Laufräder": "Megamo SL 25 ASY - Gravel // Riddler 700 Gravel 700 x 45c Tan Sidewall | Megamo SL 25 ASY - Gravel",
"Griffe": "Foam",
"Vorbau": "Alloy stem Megamo",
"Lenker": "Alloy Flat Bar",
"Kurbelgarnitur": "Shimano Cues",
"Umwerfer hinten": "Shimano RX-400, 10 speed",
"Sattel": "Selle Italia Modelo X",
"Sattelstütze": "Alloy seat post",
"Gabel": "Jakar Carbon fork",
"Jahr": "2025"
}
{
"retailer": "bikeexchange",
"retailerProductId": "megamo_jakar_30_flat_bar_2025",
"productUrl": "https://www.bikeexchange.de/de-DE/products/megamo_jakar_30_flat_bar_2025?sku=MEG_0000624885",
"extractionMethod": "embedded-json",
"sourceCategory": "gravel",
"rawTitle": "megamo Jakar 30 Flat-Bar",
"rawBrand": "megamo",
"price": 974.25,
"originalPrice": 1299,
"currency": "EUR",
"imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/d292a963ef86dc68fc73-8rchU3IB.png",
"rawSpecifications": {
"Rahmen": "New Jakar aluminum gravel-specific frame",
"Bremse vorne": "Shimano MT201",
"Bremse hinten": "Shimano MT201",
"Bremse": "Shimano MT201",
"Bremshebel": "Shimano MT201",
"Reifen vorne": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Reifen": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Laufrad vorne": "Megamo SL 25 ASY - Gravel",
"Laufrad hinten": "Megamo SL 25 ASY - Gravel",
"Reifen hinten": "Riddler 700 Gravel 700 x 45c Tan Sidewall",
"Laufräder": "Megamo SL 25 ASY - Gravel // Riddler 700 Gravel 700 x 45c Tan Sidewall | Megamo SL 25 ASY - Gravel",
"Griffe": "Foam",
"Vorbau": "Alloy stem Megamo",
"Lenker": "Alloy Flat Bar",
"Kurbelgarnitur": "Shimano Cues",
"Umwerfer hinten": "Shimano RX-400, 10 speed",
"Sattel": "Selle Italia Modelo X",
"Sattelstütze": "Alloy seat post",
"Gabel": "Jakar Carbon fork",
"Jahr": "2025"
},
"rawFeatures": [
"Aluminium",
"Shimano Cues",
"Beschreibung"
],
"rawSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 974.25,
"seller": "2Rad Jessen",
"deliveryNote": "Reguläre Lieferzeit 7 Tage"
}
],
"availabilityText": "sizes 1: 1 stocked, 0 gone, 0 unread",
"fetchedAt": "2026-09-19T05:20:21.720Z",
"sourceMeta": {
"skus": [
"8424733005002"
],
"shopSkus": [
"MEG_0000624885",
"MEG_0000624885"
],
"seller": "2Rad Jessen",
"sellerOfSize": "M",
"sellerId": "a0405e91-2eb4-421c-97d2-3bdc30a4e635",
"storeKey": "store_01KBQ6BFD08715DR46C72AQ8EB_eur",
"storeCity": "Kelheim",
"storeCountry": "DE",
"storeDelivers": true,
"storeClickAndCollect": true,
"storeReservation": true,
"storeDeliveryTime": "P7D",
"shippingPrice": 90,
"hasMoreSellers": false,
"condition": "NEW",
"ctProductId": "41a80411-8c13-4d10-8a81-b6481abc234c",
"shopCategory": "Gravel",
"colourCount": 1,
"fetchedSku": "MEG_0000624885"
}
}