The geometry chart below applies to all Ridley Helium frames from the following:
- Years: 2019, 2020, 2021, 2022, 2023
- Models: Ridley Helium SLX, Helium
- Frame material: Carbon
| Frame Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack (mm) | 507 | 527 | 542 | 573 | 599 | 624 |
| Reach (mm) | 379 | 374 | 384 | 390 | 396 | 403 |
| Top Tube, Effective (mm) | 515 | 525 | 545 | 565 | 585 | 600 |
| Seat Tube, C-T (mm) | 450 | 480 | 510 | 540 | 570 | 600 |
| Seat Tube Angle | 75º | 74º | 73.5º | 73º | 72.5º | 72.5º |
| Head Tube (mm) | 110 | 130 | 145 | 175 | 205 | 230 |
| Head Tube Angle | 71.8º | 72º | 73º | 73.5º | 73.5º | 74º |
| Chainstay (mm) | 405 | 405 | 405 | 405 | 408 | 408 |
| BB Offset (mm) | 68 | 68 | 66 | 66 | 63 | 63 |
| Wheelbase (mm) | 970 | 970 | 977 | 987 | 1005 | 1014 |
Source : Ridley Bikes
Learn more about the frame geometry measurements here.