A size-by-size geometry profile with manufacturer provenance and RideDNA consistency-audit context. Use the complete table to compare fit and handling before opening the interactive tools.
Source: Manufacturer geometry source
Provenance: published is present in the manufacturer data; derived is calculated by RideDNA; manual is a staff-entered reference rather than a manufacturer-chart value. “Not published” means the manufacturer did not provide a value for that size.
| Size | Stack | Reach | HTA | STA | ETT | Chainstay | Wheelbase | Front center | BB drop | Trail | Fork offset | Audit context |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 44.0 | 510 mm published | 366 mm published | 69.8 ° derived | 73.0 ° derived | 522 mm derived | 425 mm derived | 1003 mm published | 589 mm published | 75 mm derived | 71.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 48.0 | 530 mm published | 371 mm published | 70.9 ° derived | 73.0 ° derived | 533 mm derived | 425 mm derived | 1005 mm published | 592 mm published | 75 mm derived | 64.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 51.0 | 550 mm published | 376 mm published | 71.3 ° derived | 73.0 ° derived | 544 mm derived | 425 mm derived | 1013 mm published | 600 mm published | 75 mm derived | 61.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 54.0 | 570 mm published | 381 mm published | 71.3 ° derived | 73.0 ° derived | 555 mm derived | 425 mm derived | 1026 mm published | 612 mm published | 73 mm derived | 61.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 56.0 | 590 mm published | 387 mm published | 71.3 ° derived | 73.0 ° derived | 567 mm derived | 430 mm derived | 1044 mm published | 624 mm published | 73 mm derived | 61.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 58.0 | 610 mm published | 393 mm published | 71.3 ° derived | 73.0 ° derived | 580 mm derived | 430 mm derived | 1058 mm published | 638 mm published | 70 mm derived | 61.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 61.0 | 640 mm published | 402 mm published | 71.3 ° derived | 73.0 ° derived | 598 mm derived | 430 mm derived | 1077 mm published | 657 mm published | 70 mm derived | 61.0 mm published | 55 mm published | green |
| All 5 consistency checks passed | ||||||||||||
Overall consistency: green. This context is shown alongside the table so a rider can distinguish a complete published specification from a value that RideDNA had to derive or could not independently verify.
The Cannondale Synapse Carbon published geometry reconciles within ±1mm engineering tolerance across all seven sizes for stack, reach, wheelbase, and front center. The manufacturer publishes trail values, which the engine accepts as authoritative — the implied tire derived from those values is 700 x 41c (41mm), closely matching the bike's gravel/endurance road category. The RideDNA Geometry Engine reconciliation checks confirm internal geometric consistency across all sizes, with all five checks passing green.