Orbea Diem Size Guide & Geometry Chart
The Diem 10, Diem 20 and Diem 30 share the same frame and geometry, so one size chart and one geometry chart cover all three models. Available in four sizes from S to XL, the Orbea Diem fits riders from about 153 to 204 cm.
Frame size by rider height
| Frame size | Rider height | Metres |
|---|---|---|
| SSmall | 153 to 172 cm60.2" to 67.7" | 1.53 to 1.72 m |
| MMedium | 164 to 183 cm64.6" to 72.0" | 1.64 to 1.83 m |
| LLarge | 176 to 195 cm69.3" to 76.8" | 1.76 to 1.95 m |
| XLX-Large | 187 to 204 cm73.6" to 81.1" | 1.87 to 2.04 m |
Height ranges are approximate and overlap between sizes. If you're between sizes, choose the smaller one for a more upright position and easier handling around town, or the larger one for more room and stability on longer rides. The Orbea Urban handlebar, available with 30° or 9° of backsweep, helps fine-tune the fit.
Frame geometry
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Top tube (eff.) | 586 | 610 | 634 | 659 |
| Reach | 422 | 438 | 454 | 470 |
| Stack | 601 | 625 | 649 | 673 |
| Standover | 672 | 686 | 700 | 713 |
| Seat tube (C-T) | 442 | 468 | 490 | 540 |
| Head tube | 164.1 | 187.4 | 210.6 | 233.7 |
| Head angle | 69° | 69.5° | 70° | 70.5° |
| Seat angle (eff.) | 74.7° | 74.3° | 74° | 73.7° |
| Chainstay | 435 | 435 | 435 | 435 |
| Wheelbase | 1102 | 1121.6 | 1140.8 | 1159.5 |
| BB drop | 82 | 82 | 82 | 82 |
| BB height | 279 | 279 | 279 | 279 |
| Fork offset (rake) | 50 | 50 | 50 | 50 |
| Fork length | 410 | 410 | 410 | 410 |
Lengths in millimetres (MM) or inches (IN); angles in degrees. 700c (28") wheels with 50 mm Schwalbe Marathon tires and a rigid carbon fork on all sizes.
Between sizes or not sure?
Book a free fitting consultation by phone, video or at our Ottawa & Gatineau Experience Centre, and a Scooteretti e-bike specialist will confirm the right Diem size for you.