Road Reimagined
Go long, go short, go fast. This is WorldTour performance for real world rides.
Model Description
Smooth. Precise. And built to stay that way. Synapse Carbon 2 Di2 pairs an endurance-optimised carbon frame with Shimano’s peerless Ultegra Di2 shifting and the race-bred Reserve 42|49 wheelset. Designed for the rider who appreciates the feel of a fast bike built to go the distance—and the silence of a drivetrain that’s always in the right gear. Add in massive tire clearance and sleek integration, and it’s clear: this thing’s more than ready.
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
- Ultegra Di2 – Effortlessly accurate shifting from Shimano's penultimate electronic 12-speed drivetrain
- DT Swiss carbon road wheels - lightweight all-road capability
- Cannondale C1 Aero 27 Carbon seatpost - speed meets comfort
- Fizik Vento Argo R5 saddle - ergonomic comfort with pressure relieving cutout
Road Reimagined
Real World Performance
Ride Confident
Compliant Comfort
Like A Glove
Bring it all, bring it on

Big Ride Rubber
Best-in-class clearance for tires with a maximum measured width of up to 48mm in the front and 42mm in the rear - with at least 4mm of extra clearance on each side - makes Synapse a true, ride-longer, ride-whatever kind of road bike.

More, from less.
The LAB71 and Synapse 1 get a refined, performance-boosting, Hi-MOD carbon layup that shaves over 100 grams off the frame weight, while maintaining Synapse's stiffness, ride-feel, durability, and lifetime warranty.

Proportional Response
Tuned for the rider, our size-specific construction creates optimal stiffness and compliance for each and every frame size in the Synapse range.

StashPort + StashBag
StashPort is our downtube storage system, accessed beneath the water bottle cage. StashPort holds tools, snacks, and other ride essentials in the specially designed StashBag, and on SmartSense-equipped bikes, houses the system battery (which also provides a cool, glovebox-style light when StashPort cover is opened).

D-Lightful
The D-shaped design of Synapse’s seatpost enhances aerodynamics and boosts vertical compliance, reducing muscle fatigue so that you stay fresher on those longer days.

Fly Delta
The unique-to-Cannondale, V-shaped Delta Steerer keeps your cockpit tidy and cables routed internally, while reducing headtube frontal area for drag-reducing aero gains.
Specs
Details
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Platform
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Model NameSynapse Carbon 2
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Model CodeC12205U
Frameset
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FrameSynapse 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"
Drivetrain
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Rear DerailleurShimano Ultegra Di2 R8150
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Front DerailleurShimano Ultegra Di2 R8150
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ShiftersShimano Ultegra Di2 R8170, wireless, 12-speed
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ChainShimano Ultegra, 12-speed
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CrankShimano Ultegra R8100, 50/34
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Rear CogsShimano Ultegra R8100, 11-34, 12-speed
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Bottom BracketShimano BSA 68
Brakes
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BrakesShimano Ultegra R8170, 160/160mm CL800 rotors
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Brake LeversShimano Ultegra Di2 R8170 hydraulic disc
Wheels
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RimsDT Swiss ERC 45, carbon, 24mm inner width, 45mm depth, 24h, tubeless ready
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SpokesDT Swiss Competition
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Tire Size32
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Wheel Size700
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Hubs(F) DT Swiss 370, 12x100mm centerlock / (R) DT Swiss 370, 12x142mm centerlock
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TiresVittoria Rubino Pro IV, 700x32c
Components
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HandlebarVision Trimax Aero Alloy
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StemCannondale C1 Conceal, Alloy, 31.8, -6°
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GripsFizik Tempo Bondcush Soft, 3mm
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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)
Connectivity
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Wheel SensorCannondale Wheel Sensor
Extra
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Extra 1Large StashBag downtube storage bag, tubeless valves
Please note that, based on component availability and other factors, specifications are subject to change without notice.
Geometry
Product Information
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