Bianchi Oltre RC 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.

Bianchi Oltre RC 2026 geometry chart

Source: Manufacturer geometry source

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
470 470 mm published385 mm published70.5 ° derived74.5 ° derived515 mm derived410 mm derived982 mm published579 mm published58 mm derived74.4 mm derived43 mm published green
All 4 consistency checks passed
500 478 mm published392 mm published71.5 ° derived74.5 ° derived525 mm derived410 mm derived983 mm published581 mm published58 mm derived68.1 mm derived43 mm published green
All 4 consistency checks passed
530 504 mm published393 mm published72.0 ° derived74.0 ° derived536 mm derived410 mm derived984 mm published582 mm published68 mm derived64.9 mm derived43 mm published green
All 4 consistency checks passed
550 520 mm published397 mm published72.5 ° derived73.5 ° derived550 mm derived410 mm derived988 mm published588 mm published68 mm derived61.8 mm derived43 mm published green
All 4 consistency checks passed
570 536 mm published402 mm published73.0 ° derived73.5 ° derived560 mm derived412 mm derived996 mm published593 mm published68 mm derived58.7 mm derived43 mm published green
All 4 consistency checks passed
590 555 mm published406 mm published73.0 ° derived73.0 ° derived575 mm derived412 mm derived1005 mm published603 mm published68 mm derived58.7 mm derived43 mm published green
All 4 consistency checks passed

Audit context

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 Bianchi Oltre RC geometry reconciles within ±1mm engineering tolerance across all six sizes for reach, wheelbase, and front center. Stack shows systematic 1.2–1.5mm published values exceeding the engine's forward-model calculations across all sizes. The RideDNA Geometry Engine reconciliation checks reveal that the published stack values appear inflated by approximately 1.4mm relative to what the other published geometry parameters imply — both the head tube length and fork A2C back-calculations from stack show identical yellow-flagged residuals across all sizes, confirming this is a single stack mispublishing pattern rather than independent errors.

Next steps

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