2021 Cannondale CAAD13 Disc Tiagra vs 2019 Cannondale Synapse Carbon Disc Tiagra Flat Bar
The 51(S) is the Cannondale Synapse Carbon Disc Tiagra Flat Bar 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 Disc Tiagra Flat Bar
Compared with the Cannondale CAAD13 Disc Tiagra in 54, the Cannondale Synapse Carbon Disc Tiagra Flat Bar in 51(S) 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 Disc Tiagra Flat Bar, 51(S)Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Cannondale CAAD13 Disc Tiagra 54 | Cannondale Synapse Carbon Disc Tiagra Flat Bar 51(S) | 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 Disc Tiagra Flat Bar minus the Cannondale CAAD13 Disc Tiagra. Full charts: 2021 Cannondale CAAD13 Disc Tiagra, 2019 Cannondale Synapse Carbon Disc Tiagra Flat Bar.
Where each sits in its class
Cannondale CAAD13 Disc TiagraCannondale Synapse Carbon Disc Tiagra Flat Bar
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 Carbon Disc Tiagra Flat BarCarbon Disc Tiagra Flat Bar |
|---|---|---|
| Frame | Cannondale SmartForm C1 | Cannondale Synapse |
| Shifter | Shimano Tiagra | Shimano Tiagra FB |
| Derailleur | Shimano Tiagra, Shimano Tiagra GS | Shimano Tiagra, Shimano Tiagra GS |
| Cassette | Shimano Tiagra | Shimano HG500 |
| Chain | KMC X10 | KMC X10 |
| Crankset | Shimano Tiagra | FSA Omega |
| Pedals | Not | not listed |
| Tire | Vittoria Zaffiro Pro | Schwalbe Lugano |
| Rim | RD 2.0 | RD 3.0 |
| Brake | Shimano Tiagra | Shimano MT200 hydro |
| Bar tape | Cannondale Tape | not listed |
| Headset | CAAD13 | Synapse Si |
| Seatpost | HollowGram 27 KNØT | Cannondale C3 |
| Saddle | Prologo Nago RS STN | Fabric Scoop Radius Sport |
| Fork | not listed | Synapse |
| Bottom bracket | not listed | Cannondale PressFit30 |
| Hub | not listed | Formula RX-512 |
| Handlebar | not listed | Cannondale C3 |
| Stem | not listed | Cannondale C3 |
| Grips | not listed | Cannondale Density |
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