Cannondale Synapse Carbon 2025 geometry
Cannondale Synapse Carbon 2025 (carbon road) has 7 published frame sizes. Stack 510–640 mm; reach 366–402 mm. Sources, weights and tyre clearance where available.
Road · carbon · 2025
Check the source. The frame version or current availability is not fully confirmed. Check the source notes.
Measurements
Lengths in mm · Angles in degrees Select + beneath a size to compare
| Frame size | 44.0 | 48.0 | 51.0 | 54.0 | 56.0 | 58.0 | 61.0 |
|---|---|---|---|---|---|---|---|
| Stack mm | 510 | 530 | 550 | 570 | 590 | 610 | 640 |
| Reach mm | 366 | 371 | 376 | 381 | 387 | 393 | 402 |
| Effective top tube mm | 522 | 533 | 544 | 555 | 567 | 580 | 598 |
| Seat tube length mm | 407 | 407 | 443 | 480 | 520 | 550 | 590 |
| Head tube length mm | 91 | 108 | 127 | 150 | 171 | 196 | 227 |
| Head tube angle ° | 69.8 | 70.9 | 71.3 | 71.3 | 71.3 | 71.3 | 71.3 |
| Seat tube angle ° | 73 | 73 | 73 | 73 | 73 | 73 | 73 |
| Chainstay length mm | 425 | 425 | 425 | 425 | 430 | 430 | 430 |
| Wheelbase mm | 1003 | 1005 | 1013 | 1026 | 1044 | 1058 | 1077 |
| Bottom bracket drop mm | 75 | 75 | 75 | 73 | 73 | 70 | 70 |
| Bottom bracket height mm | 278 | 278 | 278 | 280 | 280 | 283 | 283 |
| Fork length mm | 393 | 393 | 393 | 393 | 393 | 393 | 393 |
| Fork offset mm | 55 | 55 | 55 | 55 | 55 | 55 | 55 |
| Trail mm | 71 | 64 | 61 | 61 | 61 | 61 | 61 |
| Standover height mm | 714 | 722 | 752 | 785 | 815 | 843 | 878 |
| Front centre mm | 589 | 592 | 600 | 612 | 624 | 638 | 657 |
— Not published in the collected chart. Size labels follow the manufacturer.
Frame and fork weight
- Frame: 979 g · size 56
2025 Synapse Hi-MOD, Cannondale claimed painted frame; hardware inclusion unspecified. LAB71 and Carbon 1 use this layup.
- Fork: 445 g
2025 Synapse Hi-MOD fork, Cannondale claim; reference size, paint and hardware inclusion unspecified.
- Frame: 1143 g · size 56
2025 Synapse standard Carbon layup, Cannondale claimed frame; paint and hardware inclusion unspecified.
- Fork: 494 g
2025 Synapse standard Carbon fork, Cannondale claim; reference size, paint and hardware inclusion unspecified.
Tyre clearance
Not verified for this frame.
Sources
Reviewed 2026-10-01
- Cannondale road owner manuals
- Synapse Carbon manufacturer geometry chart
- n-1: 2025 Cannondale Synapse overview (third-party)
Measurement and frame notes
- The 2025 Synapse has distinct Hi-MOD and standard Carbon layups. Claims are reported by n-1; do not apply either number to an unspecified build.
- Weight source: https://nminus1bikes.substack.com/p/the-2025-cannondale-synapse-overview