2021
2021 Cannondale Synapse Carbon
The 2021 Cannondale Synapse Carbon sits more upright than most road bikes, with a shorter rear center. Reach 371 to 402 mm, stack 530 to 640 mm. The Synapse Carbon 105 build comes with Shimano 105 shifting and Vittoria Zaffiro Pro Bright tires.
Source: cannondale.com. Checked .
Key facts
- Brand
- Cannondale
- Model
- Synapse
- Model year
- 2021
- Frame
- Carbon
- Type
- Road
- Geometry labels
- 48, 51, 54, 56, 58, and 61
- Drivetrain
- Varies by build
- Fork
- BallisTec
- Wheels
- Fulcrum Racing 600
- Geometry
- Complete for every size
- Checked
Geometry by size
| Measurement | 48 | 51 | 54 | 56 | 58 | 61 |
|---|---|---|---|---|---|---|
| Reach(mm) | 371 | 377 | 382 | 386 | 393 | 402 |
| Stack(mm) | 530 | 550 | 570 | 590 | 610 | 640 |
| Head tube angle(°) | 70.8 | 71.7 | 71.7 | 73 | 73 | 73 |
| Seat tube angle(°) | 74.6 | 74.3 | 73.9 | 73.5 | 73 | 72.5 |
| Effective top tube(mm) | 517 | 531 | 547 | 561 | 579 | 604 |
| Chainstay length(mm) | 410 | 410 | 410 | 410 | 410 | 410 |
| Wheelbase(mm) | 996 | 994 | 1008 | 995 | 1009 | 1028 |
| BB drop(mm) | 75 | 75 | 73 | 73 | 70 | 70 |
| BB height(mm) | 270 | 270 | 272 | 272 | 275 | 275 |
| Standover(mm) | 712 | 742 | 773 | 804 | 833 | 868 |
| Seat tube length(mm) | 407 | 443 | 480 | 520 | 550 | 590 |
| Head tube length(mm) | 122 | 137 | 161 | 173 | 197 | 229 |
Stock build
Synapse Carbon 105
Frame
Cannondale BallisTec
Suspension
BallisTec
Drivetrain
Wheels & Tires
Brakes
Cockpit
Synapse
Seatpost & Saddle
Keep your Synapse Carbon 105 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
Synapse Carbon Ultegra Di2
Frame
Cannondale BallisTec
Suspension
BallisTec
Drivetrain
Wheels & Tires
Brakes
Cockpit
Synapse
Seatpost & Saddle
Cannondale alloy
Keep your Synapse Carbon Ultegra Di2 in Quiver
Start from this build's stock parts, then record your upgrades. Review it before adding it to your garage.
Free on App StoreFree on Google PlayFree for your first bike, on iPhone and Android.Already have Quiver? Open this build
MManufacturer
Quick answers
- Which size or configuration labels have geometry for the 2021 Cannondale Synapse Carbon?
- Geometry is listed for 48, 51, 54, 56, 58, and 61.
- What are the reach and stack of the 2021 Cannondale Synapse Carbon in size 56?
- In size 56, reach is 386 mm and stack is 590 mm.
- What is the head tube angle of the 2021 Cannondale Synapse Carbon?
- The head tube angle is 73 degrees in size 56.
- What does the 2021 Cannondale Synapse Carbon 105 ship with?
- The stock build includes Cannondale BallisTec, BallisTec, Shimano 105, and Vittoria Zaffiro Pro Bright.
- Which years of the Cannondale Synapse are on Quiver?
- Quiver has the Cannondale Synapse for 2021, 2025, 2020, 2019, 2016, and 2015.
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
