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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | 609 mm published | 389 mm published | 73.5 ° derived | 73.0 ° derived | 575 mm derived | 410 mm derived | 998 mm published | 598 mm published | 70 mm derived | 55.4 mm derived | 42 mm derived | green |
| All 4 consistency checks passed | ||||||||||||
| M | 575 mm published | 374 mm published | 73.0 ° derived | 73.5 ° derived | 545 mm derived | 410 mm derived | 978 mm published | 578 mm published | 70 mm derived | 58.5 mm derived | 42 mm derived | green |
| All 4 consistency checks passed | ||||||||||||
| ML | 593 mm published | 379 mm published | 73.5 ° derived | 73.0 ° derived | 560 mm derived | 410 mm derived | 983 mm published | 583 mm published | 70 mm derived | 55.4 mm derived | 42 mm derived | green |
| All 4 consistency checks passed | ||||||||||||
| S | 557 mm published | 364 mm published | 72.5 ° derived | 74.0 ° derived | 525 mm derived | 410 mm derived | 967 mm published | 567 mm published | 70 mm derived | 61.6 mm derived | 42 mm derived | green |
| All 4 consistency checks passed | ||||||||||||
| XL | 631 mm published | 397 mm published | 73.5 ° derived | 72.5 ° derived | 595 mm derived | 410 mm derived | 1002 mm published | 602 mm published | 70 mm derived | 55.4 mm derived | 42 mm derived | red |
| 2 of 4 checks flagged — Wheelbase Reconciliation shows 8.3mm discrepancy | ||||||||||||
| XS | 534 mm published | 360 mm published | 71.5 ° derived | 74.5 ° derived | 510 mm derived | 410 mm derived | 964 mm published | 565 mm published | 70 mm derived | 67.8 mm derived | 42 mm derived | green |
| All 4 consistency checks passed | ||||||||||||
Overall consistency: red. 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 Parlee Altum geometry specification reconciles well across sizes XS–L, with stack, reach, wheelbase, and front center all within ±1mm engineering tolerance. Size XL shows an 8.3mm significant data inaccuracy in the published wheelbase value and an 8.4mm significant data inaccuracy in the published front center value — both discrepancies are isolated to this single size while the other five sizes reconcile cleanly. The GEOMETRY INSIGHTS note flags a minority STA > HTA inversion on size XS , opposite to the model-line dominant pattern (HTA > STA across the other 5 sizes) — this >2° magnitude inversion is a pattern that may indicate an HTA↔STA data entry swap in the affected size, and a vision re-audit of that specific size is strongly recommended.