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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 49 | 530 mm published | 375 mm published | 70.5 ° derived | 75.5 ° derived | 512 mm derived | 425 mm derived | 1008 mm published | 594 mm published | 74 mm derived | 74.0 mm published | 50 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.7mm discrepancy | ||||||||||||
| 52 | 547 mm published | 382 mm published | 71.3 ° derived | 74.0 ° derived | 539 mm derived | 425 mm derived | 1014 mm published | 600 mm published | 74 mm derived | 69.0 mm published | 50 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.7mm discrepancy | ||||||||||||
| 54 | 560 mm published | 388 mm published | 71.5 ° derived | 74.0 ° derived | 549 mm derived | 425 mm derived | 1023 mm published | 608 mm published | 72 mm derived | 67.0 mm published | 50 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.3mm discrepancy | ||||||||||||
| 56 | 578 mm published | 397 mm published | 72.0 ° derived | 73.5 ° derived | 568 mm derived | 425 mm derived | 1033 mm published | 618 mm published | 72 mm derived | 64.0 mm published | 50 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.5mm discrepancy | ||||||||||||
| 58 | 598 mm published | 405 mm published | 72.3 ° derived | 73.5 ° derived | 582 mm derived | 425 mm derived | 1045 mm published | 630 mm published | 72 mm derived | 62.0 mm published | 50 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.1mm discrepancy | ||||||||||||
| 61 | 621 mm published | 415 mm published | 72.5 ° derived | 73.5 ° derived | 599 mm derived | 425 mm derived | 1059 mm published | 644 mm published | 72 mm derived | 60.0 mm published | 50 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 Specialized Crux 4 geometry specification reconciles well across all core kinematic dimensions. Stack, reach, wheelbase, and front center all fall within ±1mm engineering tolerance across the full size run (49–61). Trail shows systematic 2.1–2.7mm data inaccuracies in the published values on sizes 49–58, with size 61 reconciling within tolerance. The RideDNA Geometry Engine reconciliation checks confirm strong internal consistency among the published values, with all five checks passing green across all six sizes.