All details on Size Recommendation & Availability can be found below the product specifications.
Road Reimagined
Long ride. Short ride. Always fast. That is WorldTour performance for you.
Model Description
Wireless technology paired with all-road toughness. The Synapse Carbon 4 comes equipped with Shimano 105 Di2, delivering Pro-Tour shifting performance without breaking the bank. The frame provides the signature Synapse experience – quiet, fast, and exceptionally comfortable – and shines on long rides with wide tires and fenders. Call it the golden middle ground between a spirited Sunday ride and everyday usability.
What it's built for
Comfortable, performance-oriented road rides, long all-day tours, fast group rides
Highlights
| Chassis | |
| Frame: | Synapse Carbon, Proportional Response construction, internal cable routing, downtube Stashport, 12 x 142mm thru-axle, UDH, 68mm BSA threaded bottom bracket, Flat Mount disc brake mount, integrated seat binder, SmartSense Gen 2.0 compatible, fender mounts |
| Fork: | Synapse Carbon, integrated crown race, 12 x 100mm thru-axle, Flat Mount disc brake mount, internal routing, 1-1/8" – 1-1/5" Delta tapered steerer, 55mm offset, fender mounts |
| Shock: | - |
| Drivetrain/Brakes | |
| Shifters: | Shimano 105 Di2 R7170, wireless, 12-speed |
| Rear Derailleur: | Shimano 105 Di2 7150 |
| Front Derailleur: | Shimano 105 Di2 7150 |
| Crankset: | Shimano 105 7100, BSA, 50/34T |
| Bottom Bracket: | Shimano BSA 68 |
| Pedals: | Not included (order here) |
| Chain: | Shimano 105 7100, 12-speed |
| Cassette: | Shimano 105 7100, 11-34T, 12-speed |
| Brakes: | Shimano 105 7170, hydraulic disc brakes, 160mm RT70 rotors (f/r) |
| Brake Levers: | Shimano 105 Di2 7170 |
| Wheels | |
| Front Hub: | Shimano RS470, 12 x 100mm thru-axle, Centerlock disc mount |
| Rear Hub: | Shimano RS470, 12 x 142mm thru-axle, Centerlock disc mount |
| Rims: | DT Swiss R470 DB, 28 holes |
| Tires: | Vittoria Rubino Pro IV, 700 x 32c |
| Components | |
| Stem: | Cannondale C1 Conceal, alloy, 31.8mm, -6° |
| Handlebar: | Vision Trimax Aero Alloy |
| Headset: | Integrated, 1-1/8" – 1-1/2" |
| Saddle: | Fizik Vento Argo X5, 140mm |
| Seatpost: | Cannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44–48cm) / 15mm offset (51–61cm) |
| Others: | Cannondale Wheel Sensor, Large StashBag downtube storage |
Size Recommendation & Availability
48
October 2025*
157 cm
167 cm
51
December 2025*
165 cm
175 cm
54
in stock
170 cm
180 cm
56
in stock
175 cm
185 cm
58
December 2025*
182 cm
193 cm
61
December 2025*
190 cm
203 cm
Video of the new Synapse series:
| Model year | 2025 |
| Intended use | Road |
| Wheel size | 28" |
| Frame material | Carbon |
| Shifting type | Derailleur |
| Gears | 24 |
