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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| P4 | 588 mm published | 445 mm published | 68.5 ° derived | 72.0 ° derived | 636 mm derived | 385 mm derived | 1094 mm published | 711 mm published | 34 mm derived | 91.0 mm published | 44 mm published | yellow |
| 1 of 5 checks flagged — Trail Reconciliation shows 2.3mm discrepancy | ||||||||||||
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 P4 dirt jump geometry demonstrates strong internal consistency, with stack, reach, wheelbase, and front center all reconciling within ±1mm engineering tolerance. Trail shows a 2.3mm data inaccuracy in the published value when calculated using the manufacturer's stated 27.5 x 2.10" reference tire. The RideDNA Geometry Engine reconciliation checks confirm internal geometric consistency across all five back-calculation pathways, with all deltas falling within the ±1mm threshold.