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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 48 | 496 mm published | 367 mm published | 71.0 ° derived | 73.0 ° derived | 520 mm derived | 405 mm derived | 973 mm published | 579 mm published | 75 mm derived | 55.6 mm published | 59 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 51 | 519 mm published | 376 mm published | 72.0 ° derived | 73.0 ° derived | 535 mm derived | 405 mm derived | 974 mm published | 580 mm published | 75 mm derived | 55.6 mm published | 53 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 54 | 542 mm published | 384 mm published | 73.0 ° derived | 73.0 ° derived | 550 mm derived | 405 mm derived | 975 mm published | 581 mm published | 72 mm derived | 55.6 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 56 | 565 mm published | 392 mm published | 73.5 ° derived | 73.0 ° derived | 565 mm derived | 405 mm derived | 982 mm published | 588 mm published | 72 mm derived | 55.6 mm published | 44 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 58 | 588 mm published | 401 mm published | 73.5 ° derived | 73.0 ° derived | 581 mm derived | 405 mm derived | 999 mm published | 604 mm published | 70 mm derived | 55.6 mm published | 44 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 61 | 608 mm published | 409 mm published | 73.5 ° derived | 73.0 ° derived | 595 mm derived | 405 mm derived | 1013 mm published | 617 mm published | 70 mm derived | 55.6 mm published | 44 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 Cervélo S5 geometry specification demonstrates excellent internal consistency across all six sizes. All five forward-model checks — stack, reach, wheelbase, front center, and trail — reconcile within ±1mm engineering tolerance. The manufacturer's published geometry forms a coherent, self-consistent dataset that validates cleanly against first-principles kinematic calculations.