The road bike, rethought
Long laps, short laps, fast laps. We bring WorldTour performance to the real world.
Model description
Wireless drivetrain for everyone. The Synapse Carbon 4 is equipped with the Shimano 105 Di2 groupset for a pro-level shifting experience, but without breaking the bank. The frame offers the signature Synapse ride feel—quietly fast and incredibly composed—and is well-suited to wide tires, fenders, and long days in the saddle. It's the perfect blend of Sunday speed and weekday practicality.
What it's for
Comfortable yet high-performance road rides, long adventures in the saddle, quick group rides
Strengths
- Lightweight, comfortable, aerodynamic Synapse carbon frame with integrated StashPort storage.
- Shimano 105 Di2 – Incredibly smooth shifting thanks to Shimano’s 2x12-speed electronic drivetrain.
- DT Swiss 470 rims with Vittoria Rubino Pro IV 32c tires for grip, durability, and speed.
- Cannondale C1 Aero 27 Carbon Seatpost - Speed Meets Comfort
- Fizik Vento Argo R5 saddle - ergonomic comfort with central relief
Real-world performance
Designed for speed and comfort over long distances, the Synapse redefines road performance. With a lightweight, wind-tunnel-tuned frame and an incredible stiffness-to-weight ratio, it's a bike ready for anything. Just ask Lachlan Morton, who broke his own record on the Tour of Australia aboard this bike. Dream-like speed, designed for the real world.
Comfort
Thanks to improvements in the carbon layup, our engineers have managed to make the new Synapse 18% more flexible than the already incredible previous model, ensuring maximum comfort even on the roughest roads.
Tailored ergonomics
It adapts perfectly to you and makes your rides unforgettable. And thanks to our Proportional Response construction, this is standard for every cyclist. From the carbon layup to the geometry, every element on the Synapse has been fine-tuned and tested for every frame size. This way, the bike works in perfect harmony with you, ensuring the best possible experience based on your height.
Ready for anything
Our new StashPort downtube storage system is always within reach when you need it and discreetly hidden when you don't. Paired with the StashBag, you can carry all your essentials on your rides, knowing they'll be safe, no matter what you do. Meanwhile, best-in-class tire clearance lets you take the idea of riding longer to a whole new level.
Specifications
Details
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PlatformSynapse Carbon
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Model NameSynapse Carbon 4 SMU
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Model CodeC12265U
Frame kit
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ChassisSynapse Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded BB, flat mount disc, integrated seat binder, SmartSense Gen 2.0 compatible, fender mounts
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ForkSynapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/5" Delta steerer, 55mm offset, fender mounts
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HeadsetIntegrated, 1-1/8" - 1-1/2"
Transmission
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ChangeShimano 105 Di2 7150
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DerailleurShimano 105 Di2 7150, braze-on
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Gear leversShimano 105 Di2 R7170, wireless, 12-speed
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ChainShimano 105 7100, 12-speed
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CranksetShimano 105 7100, BSA, 50/34
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Sprocket packShimano 105 7100, 11-34, 12-speed
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Bottom bracketShimano BSA 68
Brakes
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BrakesShimano 105 7170 hydraulic disc, 160/160mm RT70 rotors
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Brake LeversShimano 105 Di2 7170 hydraulic disc
Wheels
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CirclesDT Swiss R470 db, 28h
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RaysStainless Steel, 14g
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Tire size32
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Wheel Size700c
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Hubs(F) Shimano RS470, 12x100mm centerlock / (R) Shimano RS470, 12x142mm centerlock
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TiresVittoria Rubino Pro IV, 700x32c
Components
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HandlebarVision Trimax Aero Alloy
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Handlebar StemCannondale C1 Conceal, Alloy, 31.8, -6°
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HandleCannondale Bar Tape, 3.5mm
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SaddleFizik Vento Argo X5, 140mm
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SeatpostCannondale C1 Aero 27 Carbon, SmartSense compatible, 330mm length, 0mm offset (44-48cm), 15mm offset (51-61cm)
Extra
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Extra 1Large StashBag downtube storage bag
SPECIFICATIONS ARE SUBJECT TO CHANGE WITHOUT NOTICE, DEPENDING ON COMPONENT AVAILABILITY.
