Synapse Carbon 4 Cannondale 2025 Chalk

SYNAPSE CARBON 4

- THE ROAD, REINVENTED:

Farther, faster. WorldTour performance for the real world.

- MODEL DESCRIPTION:

Electronic intelligence is added to versatility. The Synapse Carbon 4 features a Shimano 105 Di2, so you can have pro-level performance without taking out a loan. The frame offers the characteristic qualities of the Synapse: it’s fast, quiet, balanced, and compatible with wide tires and fenders. It strikes the balance between Sunday speed and weekday practicality.

- WHAT IT’S FOR:

High-performance and comfortable road rides, long distances, explosive group rides

- KEY POINTS:

• Lightweight, comfortable, aerodynamic Synapse carbon frame with integrated storage in the diagonal tube StashPort.

• Shimano 105 Di2: Smooth and impressively precise shifting from Shimano’s 2x12 speed electronic system.

• DT Swiss 470 rims with Vittoria Rubino Pro IV 32c tires: grip, durability, and speed.

• Cannondale C1 Aero 27 Carbon seatpost: speed with comfort.

• Fizik Vento Argo R5 saddle – ergonomic comfort with a pressure-relief channel.

- Performance for the real world:

Designed to be fast, built to cover long distances, and made to keep you comfortable, the Synapse redefines road performance. With a frame under 1000 grams featuring wind tunnel-sculpted tubes and a top stiffness-to-weight ratio, it’s a bike ready for anything you throw at it. Ask Lachlan Morton why he trusted it to set the record riding around Australia. Unreal speed, designed for real-world roads.

- Excellent comfort:

Thanks to advances in carbon layup, our engineers made the new Synapse 18% more compliant than its predecessor, which was already incredibly smooth, so you feel 100% more comfort even on the roughest roads.

- Like a glove:

A great fit and feel make riding fantastic. And with our Proportional Response construction, all riders get it by default. From carbon layup to geometry, everything on the Synapse is tuned and tested by frame size, so your bike works in harmony with you and gives you the best ride possible for your height.

- Carry it all with you:

Our new diagonal tube storage system, StashPort, is there when you need it and out of sight when you don’t. Together with the special StashBag, you can carry your essentials knowing they’re well protected, no matter what you do. Meanwhile, best-in-class clearance for wide tires lets you roll all day with comfort and grip you didn’t know was possible.

*LONG-RANGE TIRES*

Best-in-class tire clearance for tires measured up to 48 mm wide at the front and 42 mm at the rear, with at least 4 mm additional clearance on each side, makes the Synapse a true endurance road bike for riding longer and farther.

*STASHPORT + STASHBAG*

StashPort is our take on a downtube storage system accessed under the bottle cage. All Synapse models come with the StashBag, a specially designed tool and essentials pouch for your ride.

*D PROFILE*

The Synapse’s D-shaped seatpost design improves aerodynamics and increases vertical compliance, reducing muscle fatigue so you stay fresher on longer days.

*FLY WITH DELTA*

Cannondale’s exclusive V-shaped Delta tube allows for a clean cockpit with internally routed cables. Plus, the small frontal area of the head tube delivers major aerodynamic benefits — and a sleek, stylish design touch.

*WHEEL SENSOR*

Cannondale’s wheel sensor tracks speed, distance, and more ride info with extraordinary accuracy, plus sends tune-up reminders and more. All through the Cannondale app.