Good to know: Configurable build
Configurable build (at least partly: the cockpit or bar width, for example). The stock build below is only one of the options.
Geometry ?
Wilier Adlar 2027 geometry in sizes XS–XL: stack 538–634 mm, reach 395–431 mm, head angle 70°.
| XS | S | M | L | XL | |
|---|---|---|---|---|---|
| Stack | 538 mm | 562 mm | 586 mm | 610 mm | 634 mm |
| Reach | 395 mm | 404 mm | 413 mm | 422 mm | 431 mm |
| Head angle | 70° | 70° | 70° | 70° | 70° |
| Seat angle | 75° | 74.5° | 74° | 74° | 73.5° |
| Seat tube (c-t) | 440 mm | 470 mm | 500 mm | 530 mm | 570 mm |
| Head tube | 79 mm | 104 mm | 130 mm | 155 mm | 181 mm |
| Top tube (effective) | 542 mm | 562 mm | 583 mm | 599 mm | 621 mm |
| Chainstay | 423 mm | 423 mm | 423 mm | 423 mm | 423 mm |
| Wheelbase | 1030 mm | 1048 mm | 1065 mm | 1083 mm | 1101 mm |
Source: wilier.com, checked 1 Nov 2026 · bar position: worked out from published data
Older model years in the archive with the same stack, reach and head angle: 2024–2025. Source: api.wilier.com
Stock build
Adlar Shimano GRX 1x12 (E437GMW)
- Groupset
- Shimano GRX 1×12
- Shifters
- Shimano GRX ST-RX610
- Cranks
- Shimano GRX FC-RX610 40T
- Stem
- Ritchey/Wilier Stemma S2
- Handlebar
- Ritchey Comp Corralitos flare drop
- Seatpost
- Ritchey/Wilier alloy 27.2
- Saddle
- Selle Royal SRX Open
Source: wilier.com, checked 1 Nov 2026
Frames with similar geometry
Stack and reach within 12 mm of size XS (stack 538 / reach 395 mm).
Stack and reach within 12 mm of size S (stack 562 / reach 404 mm).
Stack and reach within 12 mm of size M (stack 586 / reach 413 mm).
Stack and reach within 12 mm of size L (stack 610 / reach 422 mm).
Stack and reach within 12 mm of size XL (stack 634 / reach 431 mm).
Spotted a mistake or a missing build? Let me know.
Are you the manufacturer, or do you sell this bike? I’m missing 6 values for this model’s stem and bars. Add them