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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L | 559 mm published | 393 mm published | 72.5 ° derived | 73.5 ° derived | 559 mm derived | 411 mm derived | 1000 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
| M | 541 mm published | 387 mm published | 72.0 ° derived | 74.0 ° derived | 542 mm derived | 411 mm derived | 993 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
| S | 523 mm published | 380 mm published | 71.5 ° derived | 74.5 ° derived | 526 mm derived | 411 mm derived | 985 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
| XL | 577 mm published | 400 mm published | 73.0 ° derived | 73.0 ° derived | 576 mm derived | 413 mm derived | 1010 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
| XS | 505 mm published | 374 mm published | 70.6 ° derived | 75.2 ° derived | 508 mm derived | 411 mm derived | 981 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
| XXL | 595 mm published | 408 mm published | 73.5 ° derived | 73.0 ° derived | 590 mm derived | 413 mm derived | 1019 mm published | Not published | Not published | Not published | Not published | purple |
| 3 of 3 checks could not be independently verified — manufacturer did not publish the required geometry | ||||||||||||
Overall consistency: purple. 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 Wilier Filante SLR specification is deliberately incomplete — the manufacturer has withheld fork offset, fork axle-to-crown length (A2C), and BB drop from their published geometry. Front center and trail cannot be determined because all three core fork dimensions are simultaneously absent, blocking any back-calculation path. The stack, reach, and wheelbase checks show 0.0mm deltas across all six sizes, but these are trivial passes — the RideDNA engine carried through the published values because the withheld dimensions prevent independent geometric calculation. These results do not constitute genuine verification of the manufacturer's claims. The GEOMETRY INSIGHTS note unusual angle progression patterns: head tube angle shows step-downs between XL→XS (73°→70.6°) and XXL→L (73.5°→72.5°), and seat tube angle shows unusually large jumps between XL→XS (+2.2°) and XS→XXL (−2.2°) — verification of the affected sizes is recommended, though the root cause cannot be determined from the published geometry data alone. By omitting these 5 dimensions, the manufacturer prevents independent scrutiny of its geometry claims and denies consumers the data they need to evaluate handling characteristics or make meaningful comparisons with competing models. These are not obscure technical figures — they are standard dimensions routinely published by competing manufacturers. This is a deliberate choice, not a technical limitation — the manufacturer possesses this information and has elected not to share it. Consumers cannot assess fit, predict handling, or compare this bicycle on equal terms without it. Transparency about geometry is not optional: it is the minimum standard a manufacturer owes to buyers making thousands-of-dollars purchasing decisions.