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 source URL not recorded
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 | 592 mm published | 391 mm published | 72.8 ° derived | 73.0 ° derived | 572 mm derived | 417 mm derived | 1009 mm published | 604 mm published | 77 mm derived | 55.7 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| M | 550 mm published | 379 mm published | 71.5 ° derived | 73.7 ° derived | 540 mm derived | 417 mm derived | 997 mm published | 592 mm published | 77 mm derived | 63.9 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| S | 533 mm published | 365 mm published | 70.5 ° derived | 74.0 ° derived | 518 mm derived | 417 mm derived | 986 mm published | 582 mm published | 77 mm derived | 70.2 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| XL | 623 mm published | 395 mm published | 73.0 ° derived | 72.4 ° derived | 593 mm derived | 417 mm derived | 1024 mm published | 617 mm published | 72 mm derived | 54.5 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| XM | 579 mm published | 383 mm published | 72.0 ° derived | 73.4 ° derived | 556 mm derived | 417 mm derived | 1005 mm published | 601 mm published | 77 mm derived | 60.7 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| XS | 526 mm published | 358 mm published | 70.0 ° derived | 74.4 ° derived | 505 mm derived | 417 mm derived | 981 mm published | 577 mm published | 77 mm derived | 73.4 mm published | 47 mm published | green |
| All 5 consistency checks passed | ||||||||||||
| XXL | 661 mm published | 404 mm published | 73.0 ° derived | 72.0 ° derived | 619 mm derived | 417 mm derived | 1044 mm published | 637 mm published | 72 mm derived | 54.5 mm published | 47 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 Airborne Zeppelin MK IV's published geometry reconciles with the RideDNA engine's forward-model calculations within ±1mm engineering tolerance across all seven sizes. Stack, reach, wheelbase, front center, and trail all show deltas ≤0.1mm, confirming internal consistency among the manufacturer's published values. The RideDNA Geometry Engine reconciliation checks corroborate this result, with all five back-calculation checks passing green across the entire size run.