Cannondale Synapse - 2020, 56 cm

2020 Cannondale Synapse Si Ultegra, Size 56 — Carbon Endurance Road Bike

The Cannondale Synapse Si Ultegra is a lightweight, endurance-focused carbon road bike designed for long rides, smooth handling, and all-day comfort without giving up performance. Built around Cannondale’s proven Synapse carbon frame and fork, this bike delivers excellent vibration damping and stable geometry, making it ideal for endurance rides, gran fondos, and fast everyday training.

This bike is equipped with a Shimano Ultegra 2x11 drivetrain, featuring a 50/34 crankset paired with an 11–34 cassette and a long-cage Ultegra rear derailleur, giving you a wide gear range for climbing while still maintaining smooth, precise shifting. Hydraulic Ultegra disc brakes provide consistent stopping power in all conditions. Comfort-focused components include a SAVE carbon seatpost, 32c Bontrager R3 tires, and a relaxed endurance fit that still feels quick and responsive. With a claimed weight of around 17 lb, it’s impressively light for an endurance platform.

This bike is pre-owned and in good mechanical condition. It shows some cosmetic scratches from storage, but nothing structural or concerning. It has been checked over and is fully ready to ride.

Why we love it

We love the Synapse because it perfectly balances comfort, efficiency, and reliability. It’s a bike you can ride for hours without fatigue, yet it still feels lively and fast when you push the pace. The Ultegra drivetrain, wide gearing, and endurance geometry make it a fantastic choice for riders who want one versatile road bike that can handle long rides, rough pavement, and everyday training with confidence.