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 | 520 mm published | 351 mm published | 68.5 ° derived | 74.0 ° derived | 510 mm derived | 419 mm derived | 1002 mm derived | 597 mm published | 79 mm derived | 82.3 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 9.2mm discrepancy | ||||||||||||
| 51 | 542 mm published | 362 mm published | 69.5 ° derived | 74.0 ° derived | 527 mm derived | 419 mm derived | 1012 mm derived | 606 mm published | 79 mm derived | 75.6 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 8.7mm discrepancy | ||||||||||||
| 54 | 564 mm published | 373 mm published | 71.0 ° derived | 74.0 ° derived | 545 mm derived | 419 mm derived | 1018 mm derived | 602 mm published | 77 mm derived | 65.8 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 10.3mm discrepancy | ||||||||||||
| 56 | 584 mm published | 381 mm published | 72.0 ° derived | 74.0 ° derived | 559 mm derived | 419 mm derived | 1023 mm derived | 607 mm published | 77 mm derived | 59.3 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 10.5mm discrepancy | ||||||||||||
| 58 | 604 mm published | 388 mm published | 72.5 ° derived | 74.0 ° derived | 574 mm derived | 419 mm derived | 1035 mm derived | 616 mm published | 75 mm derived | 56.0 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 12.8mm discrepancy | ||||||||||||
| 61 | 632 mm published | 399 mm published | 72.5 ° derived | 74.0 ° derived | 593 mm derived | 419 mm derived | 1054 mm derived | 636 mm published | 75 mm derived | 56.0 mm derived | 52 mm published | red |
| 2 of 3 checks flagged — Reach Reconciliation shows 12.9mm discrepancy | ||||||||||||
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 3T Ultra 700c geometry specification exhibits systematic discrepancies across all six sizes. Reach shows data inaccuracies ranging from 8.7mm to 12.9mm across all sizes. Front center shows significant data inaccuracies ranging from 8.9mm to 10.7mm on sizes 54–61, while sizes 48–51 reconcile within ±1mm engineering tolerance. Stack shows minor data inaccuracies of 2.3–3.0mm on sizes 48–51, while sizes 54–61 reconcile within ±1mm engineering tolerance.