2021 Cannondale CAAD13 Disc Tiagra vs 2021 Cannondale Synapse Carbon
The 51 is the Cannondale Synapse Carbon size closest to your 54 Cannondale CAAD13 Disc Tiagra. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Cannondale Synapse Carbon
Compared with the Cannondale CAAD13 Disc Tiagra in 54, the Cannondale Synapse Carbon in 51 places the top of the head tube 5 mm lower and 7 mm further back, relative to the bottom bracket. Its wheelbase is 14 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −5 mm
- Lower front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- −14 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
Cannondale CAAD13 Disc Tiagra, 54Cannondale Synapse Carbon, 51Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Cannondale CAAD13 Disc Tiagra 54 | Cannondale Synapse Carbon 51 | Difference |
|---|---|---|---|
| Reach | 384 | 377 | −7 mm |
| Stack | 555 | 550 | −5 mm |
| Head tube angle | 71.2 | 71.7 | +0.5° |
| Seat tube angle | 73.7 | 74.3 | +0.6° |
| Effective top tube | 546 | 531 | −15 mm |
| Chainstay length | 408 | 410 | +2 mm |
| Wheelbase | 1008 | 994 | −14 mm |
| BB drop | 72 | 75 | +3 mm |
| BB height | 271 | 270 | −1 mm |
| Standover | 790 | 742 | −48 mm |
| Seat tube length | 519 | 443 | −76 mm |
| Head tube length | 154 | 137 | −17 mm |
Differences are the Cannondale Synapse Carbon minus the Cannondale CAAD13 Disc Tiagra. Full charts: 2021 Cannondale CAAD13 Disc Tiagra, 2021 Cannondale Synapse Carbon.
Where each sits in its class
Cannondale CAAD13 Disc TiagraCannondale Synapse Carbon
Each bike is ranked against the other road bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Cannondale CAAD13 Disc TiagraDisc Tiagra | Cannondale Synapse CarbonCarbon 105 |
|---|---|---|
| Frame | Cannondale SmartForm C1 | Cannondale BallisTec |
| Shifter | Shimano Tiagra | Shimano 105 |
| Derailleur | Shimano Tiagra, Shimano Tiagra GS | Shimano 105, Shimano 105 GS |
| Cassette | Shimano Tiagra | Shimano 105 |
| Chain | KMC X10 | Shimano HG601 |
| Crankset | Shimano Tiagra | Cannondale BB30a |
| Pedals | Not | Not |
| Tire | Vittoria Zaffiro Pro | Vittoria Zaffiro Pro Bright |
| Rim | RD 2.0 | Cannondale RD 2.0 |
| Brake | Shimano Tiagra | Shimano 105 |
| Bar tape | Cannondale Tape | Cannondale Tape |
| Headset | CAAD13 | Synapse |
| Seatpost | HollowGram 27 KNØT | not listed |
| Saddle | Prologo Nago RS STN | Fabric Scoop |
| Fork | not listed | BallisTec |
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