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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 470 | 497 mm published | 377 mm published | 70.5 ° derived | 74.5 ° derived | 515 mm derived | 410 mm derived | 982 mm published | 580 mm published | 60 mm derived | 74.4 mm derived | 43 mm published | green |
| All 4 consistency checks passed | ||||||||||||
| 500 | 505 mm published | 383 mm published | 71.5 ° derived | 74.5 ° derived | 525 mm derived | 410 mm derived | 983 mm published | 582 mm published | 60 mm derived | 68.1 mm derived | 43 mm published | yellow |
| 1 of 4 checks flagged — Reach Reconciliation shows 2.1mm discrepancy | ||||||||||||
| 530 | 529 mm published | 384 mm published | 72.0 ° derived | 74.0 ° derived | 535 mm derived | 410 mm derived | 984 mm published | 583 mm published | 68 mm derived | 64.9 mm derived | 43 mm published | green |
| All 4 consistency checks passed | ||||||||||||
| 550 | 545 mm published | 388 mm published | 73.0 ° derived | 73.5 ° derived | 550 mm derived | 413 mm derived | 991 mm published | 588 mm published | 68 mm derived | 58.7 mm derived | 43 mm published | yellow |
| 2 of 4 checks flagged — Wheelbase Reconciliation shows 4.3mm discrepancy | ||||||||||||
| 570 | 561 mm published | 393 mm published | 73.0 ° derived | 73.5 ° derived | 560 mm derived | 413 mm derived | 996 mm published | 593 mm published | 68 mm derived | 58.7 mm derived | 43 mm published | green |
| All 4 consistency checks passed | ||||||||||||
| 590 | 580 mm published | 396 mm published | 73.0 ° derived | 73.0 ° derived | 575 mm derived | 413 mm derived | 1006 mm published | 603 mm published | 68 mm derived | 58.7 mm derived | 43 mm published | green |
| All 4 consistency checks passed | ||||||||||||
| 610 | 599 mm published | 397 mm published | 73.0 ° derived | 72.5 ° derived | 585 mm derived | 415 mm derived | 1012 mm published | 607 mm published | 68 mm derived | 58.7 mm derived | 43 mm published | green |
| All 4 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 Bianchi Sprint geometry specification reconciles well across the size run, with only isolated discrepancies on size 550. Stack reconciles within ±1mm engineering tolerance across all seven sizes. Reach shows a 2.1mm data inaccuracy on size 500 only; all other sizes reconcile within tolerance. Wheelbase and front center both show data inaccuracies on size 550 (4.3mm and 4.7mm respectively), while the remaining six sizes reconcile within tolerance. The isolated nature of these discrepancies on specific sizes indicates per-size data entry errors rather than systematic specification issues.