← Review table (gravel) · shopper page
bikeexchange:megamo_jakar_30_2025 · source URL · confidence 0.95 · GTIN 8424733010266
Can win a band.
| retailer label | alpha | comparable cm | match | mapping | in stock | variant price | evidence |
|---|---|---|---|---|---|---|---|
| M | M | — | unknown | unsupported | yes | €1.699 | — |
| XL | XL | — | unknown | unsupported | yes | €1.699 | — |
| 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
Canonical configuration: Megamo | Jakar 30 | GRX | 2025
Confidence: high
| retailer | price | sizes in stock | |
|---|---|---|---|
| Fahrrad XXL | €1.399,99 | L, M, S | debug |
| BikeExchange | €1.699 | M, XL | debug |
| field | source | evidence |
|---|---|---|
| brand | retailer:bikeexchange / parse | megamo |
| model | retailer:bikeexchange / derived | megamo Jakar 30 |
| modelYear | retailer:bikeexchange / parse | Jahr: 2025 |
| category | retailer:bikeexchange / derived | retailer taxonomy |
| frameMaterial | retailer:bikeexchange / parse | aluminum |
| speeds | retailer:bikeexchange / parse | 2x10 |
| brakes | retailer:bikeexchange / dictionary | component code GRX |
| 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 25-field spec table |
| beltDrive | retailer:bikeexchange / parse | HG50 |
| wheelMaterial | retailer:bikeexchange / parse | Alloy |
| powerMeter | retailer:bikeexchange / derived | absent from a 25-field spec table |
| availability | retailer:bikeexchange / derived | sizes 2: 2 stocked, 0 gone, 0 unread |
| seller | retailer:bikeexchange / parse | M: Keller Fahrräder Friedrichshafen |
| groupsetFamily | ai / ai (0.95) | Shimano GRX |
none
{
"frameScore": 11,
"drivetrainScore": 18,
"wheelScore": 5,
"extrasScore": 0,
"suspensionScore": 0,
"weightAdjustment": 0,
"equipmentValue": 34,
"notes": [
"Shimano GRX = 20.",
"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.",
"Brakes \"hydraulic-disc\" = 0, the baseline for gravel.",
"Weight not published: no weight adjustment either way."
],
"marketPrice": 1593,
"valueScore": 0.938,
"savingsVsMarket": -106
}
{
"requested": [
"groupsetFamily",
"wheelMaterial",
"wheelTier",
"weightKg"
],
"applied": [
"groupsetFamily"
],
"rejected": [
{
"field": "mixedGroupset",
"reason": "evidence not found verbatim in source",
"value": "true",
"evidence": "Kurbelgarnitur: Prowheel\nSchalthebel: Shimano RX-400 2x10s"
}
],
"notes": "Groupset family is listed as Shimano GRX in the source. Speeds are 2x10 (10 rear cogs) shown by \"2x10s\" and \"10s\" entries. The crank is Prowheel while shifters/derailleurs are Shimano RX-400, so this is a mixed groupset. Wheel material and tier are not stated (wheel names are \"Megamo SL 25 ASY - Gravel\" but no material). Brakes are listed as \"Shimano GRX\" but the source does not explicitly state hydraulic vs mechanical. Weight and electronic shifting and power meter are not specified.",
"raw": {
"frameMaterial": {
"value": "aluminium",
"evidence": "Aluminium",
"confidence": 0.9
},
"groupsetBrand": {
"value": "Shimano",
"evidence": "Shimano GRX",
"confidence": 0.95
},
"groupsetFamily": {
"value": "GRX",
"evidence": "Shimano GRX",
"confidence": 0.95
},
"electronicShifting": {
"value": null,
"evidence": null,
"confidence": 0.2
},
"speeds": {
"value": "10",
"evidence": "Schalthebel: Shimano RX-400 2x10s",
"confidence": 0.9
},
"mixedGroupset": {
"value": "true",
"evidence": "Kurbelgarnitur: Prowheel\nSchalthebel: Shimano RX-400 2x10s",
"confidence": 0.9
},
"wheelMaterial": {
"value": null,
"evidence": null,
"confidence": 0.1
},
"wheelTier": {
"value": null,
"evidence": null,
"confidence": 0.1
},
"brakes": {
"value": null,
"evidence": null,
"confidence": 0.1
},
"weightKg": {
"value": null,
"evidence": null,
"confidence": 0.1
},
"powerMeter": {
"value": null,
"evidence": null,
"confidence": 0.1
},
"notes": "Groupset family is listed as Shimano GRX in the source. Speeds are 2x10 (10 rear cogs) shown by \"2x10s\" and \"10s\" entries. The crank is Prowheel while shifters/derailleurs are Shimano RX-400, so this is a mixed groupset. Wheel material and tier are not stated (wheel names are \"Megamo SL 25 ASY - Gravel\" but no material). Brakes are listed as \"Shimano GRX\" but the source does not explicitly state hydraulic vs mechanical. Weight and electronic shifting and power meter are not specified."
}
}
{
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"retailer": "bikeexchange",
"retailerProductId": "megamo_jakar_30_2025",
"productUrl": "https://www.bikeexchange.de/de-DE/products/megamo_jakar_30_2025?sku=MEG_0000624015",
"brand": "Megamo",
"model": "Jakar 30",
"modelYear": 2025,
"category": "gravel",
"categoryBasis": "route",
"sourceCategory": "gravel",
"price": 1699,
"originalPrice": null,
"currency": "EUR",
"discountPercent": null,
"frameMaterial": "aluminium",
"frameModel": "New Jakar aluminum gravel-specific frame",
"frameTier": null,
"groupsetBrand": "Shimano",
"groupsetFamily": "GRX",
"groupsetGeneration": null,
"electronicShifting": false,
"speeds": 10,
"mixedGroupset": null,
"groupsetComponents": null,
"groupsetTierSpread": 0,
"crank": "Prowheel",
"cassette": null,
"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": 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": "aluminium",
"wheelTier": "unknown",
"tyres": "WTB Riddler 700 x 45c Tan Sidewall",
"weightKg": null,
"powerMeter": false,
"powerMeterKind": null,
"availableSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 1699,
"seller": "Keller Fahrräder Friedrichshafen",
"deliveryNote": "Reguläre Lieferzeit 4 Tage"
},
{
"rawSize": "XL",
"size": "XL",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 1699,
"seller": null,
"deliveryNote": null
}
],
"seller": "Keller Fahrräder Friedrichshafen",
"availability": "in-stock",
"gtins": [
"8424733010266"
],
"imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/572fe8f1c3200c42ed99-8Gj83WaM.png",
"rawTitle": "megamo Jakar 30",
"fetchedAt": "2026-09-19T05:20:17.010Z",
"normalizationConfidence": 0.95,
"warnings": []
}
{
"Rahmen": "New Jakar aluminum gravel-specific frame",
"Bremse hinten": "Shimano GRX",
"Bremse": "Shimano GRX",
"Bremse vorne": "Shimano GRX",
"Bremshebel": "Shimano GRX",
"Reifen vorne": "WTB Riddler 700 x 45c Tan Sidewall",
"Naben": "CL712 Alloy Front hub BLK_12NM*14G*28H*100 / RXC400 Alloy rear hub BLK M12*14G*28H*142",
"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": "WTB Riddler 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 handlebar Megamo",
"Kurbelgarnitur": "Prowheel",
"Anzahl Gänge": "21.0",
"Kettenblätter": "Shimano HG50 11-36t 10s",
"Schalthebel": "Shimano RX-400 2x10s",
"Umwerfer hinten": "Shimano RX-400, 10 speed",
"Umwerfer": "Shimano RX-400 10s",
"Sattel": "Selle Italia Modelo X",
"Sattelstütze": "Alloy seat post",
"Gabel": "Jakar Carbon fork",
"Jahr": "2025"
}
{
"retailer": "bikeexchange",
"retailerProductId": "megamo_jakar_30_2025",
"productUrl": "https://www.bikeexchange.de/de-DE/products/megamo_jakar_30_2025?sku=MEG_0000624015",
"extractionMethod": "embedded-json",
"sourceCategory": "gravel",
"rawTitle": "megamo Jakar 30",
"rawBrand": "megamo",
"price": 1699,
"originalPrice": null,
"currency": "EUR",
"imageUrl": "https://images.cdn.europe-west1.gcp.commercetools.com/078b97e9-ed31-4c81-baae-cdd44f3bf3c1/572fe8f1c3200c42ed99-8Gj83WaM.png",
"rawSpecifications": {
"Rahmen": "New Jakar aluminum gravel-specific frame",
"Bremse hinten": "Shimano GRX",
"Bremse": "Shimano GRX",
"Bremse vorne": "Shimano GRX",
"Bremshebel": "Shimano GRX",
"Reifen vorne": "WTB Riddler 700 x 45c Tan Sidewall",
"Naben": "CL712 Alloy Front hub BLK_12NM*14G*28H*100 / RXC400 Alloy rear hub BLK M12*14G*28H*142",
"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": "WTB Riddler 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 handlebar Megamo",
"Kurbelgarnitur": "Prowheel",
"Anzahl Gänge": "21.0",
"Kettenblätter": "Shimano HG50 11-36t 10s",
"Schalthebel": "Shimano RX-400 2x10s",
"Umwerfer hinten": "Shimano RX-400, 10 speed",
"Umwerfer": "Shimano RX-400 10s",
"Sattel": "Selle Italia Modelo X",
"Sattelstütze": "Alloy seat post",
"Gabel": "Jakar Carbon fork",
"Jahr": "2025"
},
"rawFeatures": [
"Aluminium",
"Shimano GRX",
"Beschreibung"
],
"rawSizes": [
{
"rawSize": "M",
"size": "M",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 1699,
"seller": "Keller Fahrräder Friedrichshafen",
"deliveryNote": "Reguläre Lieferzeit 4 Tage"
},
{
"rawSize": "XL",
"size": "XL",
"sizeCm": null,
"inStock": true,
"stockCount": null,
"price": 1699,
"seller": null,
"deliveryNote": null
}
],
"availabilityText": "sizes 2: 2 stocked, 0 gone, 0 unread",
"fetchedAt": "2026-09-19T05:20:17.010Z",
"sourceMeta": {
"skus": [
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],
"shopSkus": [
"MEG_0000624015",
"MEG_0000624015",
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],
"seller": "Keller Fahrräder Friedrichshafen",
"sellerOfSize": "M",
"sellerId": "699a1966-92bd-426c-b354-76b23d205f2f",
"storeKey": "store_01KCRVRX85FKJYZGGM5KBEGJC1_eur",
"storeCity": "Friedrichshafen",
"storeCountry": "DE",
"storeDelivers": true,
"storeClickAndCollect": true,
"storeReservation": true,
"storeDeliveryTime": "P4D",
"shippingPrice": 75.5,
"hasMoreSellers": true,
"condition": "NEW",
"ctProductId": "db2f5d8f-a554-427b-8b59-ea464773c6d7",
"shopCategory": "Gravel",
"colourCount": 2,
"fetchedSku": "MEG_0000624015"
}
}