Ridley Helium Disc geometry
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Size M
Render
Align
Geometry
| Size | XXS | XS | S | M | L | XL |
|---|---|---|---|---|---|---|
| Stack mm | 507 | 527 | 542 | 573 | 599 | 624 |
| Reach mm | 379 | 374 | 384 | 390 | 396 | 403 |
| Head tube angle ° | 71.8 | 72.0 | 73.0 | 73.5 | 73.5 | 74.0 |
| Seat tube angle ° | 75.0 | 74.0 | 73.5 | 73.0 | 72.5 | 72.5 |
| Head tube length mm | 110 | 130 | 145 | 175 | 205 | 230 |
| Chainstay mm | 405 | 405 | 405 | 405 | 408 | 408 |
| BB drop mm | 68 | 68 | 66 | 66 | 63 | 63 |
| Stack to reach | 1.34 | 1.41 | 1.41 | 1.47 | 1.51 | 1.55 |
| Effective top tube mmi | 515 | 525 | 545 | 565 | 585 | 600 |
SizeMkey specs
Stack-to-reach (size M)1.47More relaxed (taller and shorter) than 56% of road frames in the database at comparable sizes.
Closest geometry matches (size M)
Matched by stack, reach and head tube angle.