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 | 369 mm published | 71.0 ° derived | 74.5 ° derived | 506 mm derived | 410 mm derived | 977 mm published | 579 mm published | 77 mm derived | 57.3 mm published | 58 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.1mm discrepancy | ||||||||||||
| 51 | 520 mm published | 377 mm published | 72.0 ° derived | 74.0 ° derived | 526 mm derived | 410 mm derived | 978 mm published | 580 mm published | 77 mm derived | 57.3 mm published | 52 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 54 | 545 mm published | 383 mm published | 73.0 ° derived | 73.5 ° derived | 545 mm derived | 410 mm derived | 978 mm published | 580 mm published | 74 mm derived | 57.3 mm published | 46 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 56 | 568 mm published | 391 mm published | 73.0 ° derived | 73.0 ° derived | 565 mm derived | 410 mm derived | 993 mm published | 594 mm published | 74 mm derived | 57.3 mm published | 46 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 58 | 591 mm published | 400 mm published | 73.0 ° derived | 73.0 ° derived | 581 mm derived | 410 mm derived | 1010 mm published | 611 mm published | 72 mm derived | 57.3 mm published | 46 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| 61 | 611 mm published | 408 mm published | 73.0 ° derived | 73.0 ° derived | 595 mm derived | 410 mm derived | 1025 mm published | 625 mm published | 72 mm derived | 57.3 mm published | 46 mm published | green |
| All 5 consistency checks passed | ||||||||||||
Overall consistency: yellow. 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 Cervelo R5 geometry reconciles within ±1mm engineering tolerance across all primary kinematic dimensions (stack, reach, wheelbase, front center) on all six sizes. Trail shows a 2.1mm data inaccuracy on size 48 and reconciles within tolerance on the remaining five sizes. The manufacturer's published specification demonstrates strong internal geometric consistency, with the RideDNA Geometry Engine reconciliation checks confirming that all published values are mutually self-consistent across the size run.