Colnago V4Rs 2026 geometry

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.

Colnago V4Rs 2026 geometry chart

Source: Manufacturer geometry source

This profile is available for riders, but it is not currently indexed because its published geometry is not fully independently verified. Values marked derived are calculated by RideDNA; values marked published are transcribed from the manufacturer chart.

Published geometry by size

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.

SizeStackReachHTASTAETTChainstayWheelbaseFront centerBB dropTrailFork offsetAudit context
420 510 mm published370 mm published70.6 ° derived75.5 ° derived504 mm derived408 mm derived974 mm derived576 mm published72 mm derived73.8 mm derived43 mm published yellow
1 of 3 checks flagged — Stack Reconciliation shows 2.4mm discrepancy
455 522 mm published375 mm published71.0 ° derived75.0 ° derived517 mm derived408 mm derived979 mm derived582 mm published72 mm derived71.2 mm derived43 mm published yellow
1 of 3 checks flagged — Stack Reconciliation shows 2.1mm discrepancy
485 539 mm published383 mm published71.5 ° derived74.5 ° derived535 mm derived408 mm derived989 mm derived591 mm published72 mm derived68.1 mm derived43 mm published yellow
1 of 3 checks flagged — Stack Reconciliation shows 2.1mm discrepancy
510 557 mm published388 mm published71.8 ° derived74.0 ° derived550 mm derived408 mm derived997 mm derived597 mm published72 mm derived66.2 mm derived43 mm published yellow
2 of 3 checks flagged — Stack Reconciliation shows 2.2mm discrepancy
530 575 mm published395 mm published72.5 ° derived73.5 ° derived567 mm derived408 mm derived1002 mm derived599 mm published72 mm derived61.8 mm derived43 mm published red
1 of 3 checks flagged — Front Center Reconciliation shows 5.7mm discrepancy
550 593 mm published403 mm published72.9 ° derived73.0 ° derived586 mm derived408 mm derived1012 mm derived608 mm published72 mm derived59.3 mm derived43 mm published red
1 of 3 checks flagged — Front Center Reconciliation shows 6.2mm discrepancy
570 612 mm published410 mm published73.1 ° derived73.0 ° derived599 mm derived408 mm derived1023 mm derived619 mm published72 mm derived58.1 mm derived43 mm published red
1 of 3 checks flagged — Front Center Reconciliation shows 6.1mm discrepancy

Audit context

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 Colnago V4Rs geometry audit reveals a systematic front center discrepancy on the three largest sizes (530, 550, 570mm), where published values are 5.7–6.2mm lower than the engine's ETT-anchored calculations — significant data inaccuracies per Rule 10. The smaller four sizes (420–510mm) reconcile within ±2.4mm across all checks, falling within ±1mm engineering tolerance or showing minor 2.1–2.4mm data inaccuracies in stack. The front center discrepancies on sizes 530–570mm indicate the published front center values are not internally consistent with the published ETT specification for those sizes.

Next steps

More Colnago geometry profiles