Cannondale Synapse: geometry and sizes
Cannondale may sell more than one frame under the Synapse name, each with its own geometry. These are the ones in the database. Each shows stack and reach for the smallest and largest size. The numbers for every size are on the model page.
The tables show the smallest and largest size, each with stack / reach in millimetres. Both terms are explained in the glossary.
Current Cannondale Synapse versions
| Version | Smallest | Largest |
|---|---|---|
| Synapse Alloy 2026 endurance road · aluminium | 44 · 510 / 365 | 61 · 640 / 402 |
| Synapse Carbon 2025 endurance road · carbon | 44 · 510 / 366 | 61 · 640 / 402 |
Older Cannondale Synapse model years
Frame geometry only, no build. Model years are approximate.
| Version | Smallest | Largest |
|---|---|---|
| Synapse Carbon 2022–2024 | 48 · 530 / 371 | 61 · 640 / 402 |
| Synapse Carbon 2018–2021 | 44 · 510 / 365 | 61 · 640 / 402 |
| Synapse Alloy 2018–2020 | 44 · 510 / 365 | 61 · 639 / 403 |
| Synapse Alloy 2016 | 48 · 537 / 360 | 61 · 639 / 400 |
| Synapse Hi-MOD / Carbon 2016 | 48 · 528 / 362 | 58 · 611 / 394 |
| Synapse Carbon 2014–2016 | 48 · 528 / 362 | 61 · 631 / 402 |
| Synapse Carbon Women 2014–2016 | 44 · 516 / 356 | 56 · 584 / 380 |
| Synapse Disc Alloy Women 2014–2016 | 44 · 527 / 353 | 56 · 592 / 378 |
| Synapse Alloy Women 2015 | 44 · 527 / 353 | 54 · 575 / 372 |
| Synapse Disc Alloy / Alloy 2014 | 48 · 537 / 360 | 61 · 639 / 400 |
| Synapse Alloy 2011–2013 | 48 · 529 / 355 | 61 · 619 / 406 |
| Synapse Carbon 2011–2013 | 48 · 530 / 355 | 61 · 620 / 405 |
| Synapse Alloy Women’s 2011 | 44 · 529 / 354 | 51 · 548 / 364 |
| Synapse Carbon Women’s 2011 | 44 · 524 / 353 | 54 · 564 / 371 |
| Synapse Hi-MOD Carbon / Carbon / Alloy 2010 | 48 · 530 / 355 | 61 · 620 / 405 |
The same size label on two versions doesn’t mean the same frame. And stack and reach only describe the frame: where the bars end up also depends on the stem, spacers and bars.
There’s no sizing by height here. Everything starts from your position. Enter your position and I’ll work out which versions and sizes match it.