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 source URL not recorded
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LG | 597 mm derived | 392 mm derived | 74.0 ° derived | 73.0 ° derived | 575 mm derived | 404 mm derived | 990 mm published | 589 mm derived | 70 mm derived | 54.2 mm derived | 40 mm published | red |
| 1 of 1 checks flagged — Wheelbase Reconciliation shows 6.9mm discrepancy | ||||||||||||
| M | 560 mm derived | 389 mm derived | 73.5 ° derived | 73.5 ° derived | 555 mm derived | 410 mm derived | 980 mm published | 580 mm derived | 70 mm derived | 57.2 mm derived | 40 mm published | green |
| All 1 consistency checks passed | ||||||||||||
| ML | 578 mm derived | 388 mm derived | 73.5 ° derived | 73.0 ° derived | 565 mm derived | 404 mm derived | 985 mm published | 585 mm derived | 70 mm derived | 57.2 mm derived | 40 mm published | red |
| 1 of 1 checks flagged — Wheelbase Reconciliation shows 6.6mm discrepancy | ||||||||||||
| S | 543 mm derived | 389 mm derived | 73.0 ° derived | 74.0 ° derived | 545 mm derived | 410 mm derived | 984 mm published | 585 mm derived | 70 mm derived | 55.1 mm derived | 45 mm published | green |
| All 1 consistency checks passed | ||||||||||||
| XL | 615 mm derived | 391 mm derived | 74.0 ° derived | 72.5 ° derived | 585 mm derived | 411 mm derived | 1002 mm published | 594 mm derived | 67 mm derived | 54.2 mm derived | 40 mm published | red |
| 1 of 1 checks flagged — Wheelbase Reconciliation shows 7mm discrepancy | ||||||||||||
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 Merlin XL Compact geometry specification shows systematic wheelbase discrepancies on sizes ML, LG, and XL, ranging from 6.6mm to 7.0mm — significant data inaccuracies in the published wheelbase values. Sizes S and M reconcile within ±1mm engineering tolerance. The RideDNA Geometry Engine reconciliation checks confirm internal geometric consistency across all five sizes, indicating the published reach, stack, front center, chainstay length, and trail values form a mutually self-consistent set. The wheelbase discrepancies on the three larger sizes represent isolated specification inaccuracies in the published wheelbase column.