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/56 | 590 mm published | 398 mm published | 71.0 ° derived | 73.0 ° derived | 579 mm derived | 425 mm derived | 1049 mm published | 634 mm derived | 71 mm derived | 64.5 mm derived | 50 mm published | green |
| All 3 consistency checks passed | ||||||||||||
| M/54 | 565 mm published | 387 mm published | 71.0 ° derived | 73.5 ° derived | 555 mm derived | 425 mm derived | 1029 mm published | 614 mm derived | 71 mm derived | 64.5 mm derived | 50 mm published | green |
| All 3 consistency checks passed | ||||||||||||
| S/52 | 544 mm published | 378 mm published | 70.0 ° derived | 74.0 ° derived | 535 mm derived | 425 mm derived | 1023 mm published | 608 mm derived | 71 mm derived | 70.9 mm derived | 50 mm published | green |
| All 3 consistency checks passed | ||||||||||||
| XL/58 | 610 mm published | 406 mm published | 71.0 ° derived | 73.0 ° derived | 593 mm derived | 425 mm derived | 1064 mm published | 648 mm derived | 71 mm derived | 64.5 mm derived | 50 mm published | green |
| All 3 consistency checks passed | ||||||||||||
| XS/49 | 519 mm published | 374 mm published | 70.0 ° derived | 74.5 ° derived | 518 mm derived | 425 mm derived | 1009 mm published | 595 mm derived | 71 mm derived | 70.9 mm derived | 50 mm published | green |
| All 3 consistency checks passed | ||||||||||||
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 Scott Addict Gravel RC geometry specification reconciles within ±1mm engineering tolerance across all five sizes (XS/49–XL/58) for stack, reach, and wheelbase. The forward-model calculations, anchored to the published effective top tube values, align with the manufacturer's published stack, reach, and wheelbase data. The RideDNA Geometry Engine reconciliation checks confirm internal geometric consistency across all sizes, with all back-calculated dimensions (head tube length, fork offset, chainstay length, fork A2C, and head tube angle) reconciling within ±0.11mm or ±0.005°.