Model Description
Wireless brains meet all-road brawn. Synapse Carbon 4 runs Shimano 105 Di2 for a shifting experience that feels straight off the pro tour, minus the bank loan. The frame delivers that signature Synapse ride—quietly fast, endlessly composed—and plays nice with wide tires, fenders, and long days. Call it the sweet spot between Sunday speed and weekday practicality.
What it’s for
Comfortable high-performance road riding, long distance missions, fast group rides
Highlights
- Lightweight, smoothly compliant, sleekly aero Synapse carbon frameset with StashPort downtube storage
- Shimano 105 Di2 – Impressively smooth shifting from Shimano’s journeyman electronic 2×12-speed drivetrain
- DT Swiss 470 rims with Vittoria Rubino Pro IV 32c tires – grip, durability, and speed
- Cannondale C1 Aero 27 Carbon seatpost – speed meets comfort
- Fizik Vento Argo R5 saddle – ergonomic comfort with pressure relieving cutout
Specs
| Frame |
Synapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12×142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, SmartSense Gen 2.0 compatible
|
| Fork |
Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8″ to 1-1/5″ Delta steerer, 55mm offset
|
| Rims | DT Swiss R470 db, 28h |
| Hubs | (F) Shimano RS470, 12x100mm centerlock / (R) Shimano RS470, 12x142mm centerlock |
| Spokes | Stainless Steel, 14g |
| Tyres | Vittoria Rubino Pro IV, 700x32c |
| Crank | Shimano 105 7100, BSA, 50/34 |
| Bottom Bracket | Shimano BSA 68 |
| Chain | Shimano 105 7100, 12-speed |
| Cassette | Shimano 105 7100, 11-34, 12-speed |
| Front Derailleur | Shimano 105 Di2 7150, braze-on |
| Rear Derailleur | Shimano 105 Di2 7150 |
| Shifters | Shimano 105 Di2 R7170, wireless, 12-speed |
| Handlebar | Vision Trimax Aero Alloy |
| Stem | Cannondale C1 Conceal, Alloy, 31.8, -6° |
| Headset | Integrated, 1-1/8″ – 1-1/2″ |
| Brakes | Shimano 105 7170 hydraulic disc, 160/160mm RT70 rotors |










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