Monday | 9.00am - 5.30pm |
Tuesday | 9.00am - 5.30pm |
Wednesday | 9.00am - 5.30pm |
Thursday | 9.00am - 5.30pm |
Friday | 9.00am - 5.30pm |
Saturday | 9.00am - 5.30pm |
Sunday | 10.00am - 4.00pm |
Bank Holidays | 10.00am - 4.00pm |

2024 Cannondale Synapse Carbon 4 Tiagra Endurance Road Bike in Green

With the 2024 Cannondale Synapse Carbon 4 Tiagracomfort is built in. Discreet flex zones in the rear triangle, seat tube and seatpost absorb road chatter and bumps without adding weight or isolating you from the ride experience.
Roll smooth, roll fast, roll confident. Wherever the road takes you, roll with Synapse – our most comfortable, all-around, up-for-anything, pure road machine.
The open road, up & down hills, rough pavement.
What it's built for
Comfort, handling, going long.
Key Features:
- Lightweight Synapse Carbon frameset
- Shimano Tiagra 10-speed groupset
- Hydraulic disc brakes
- Cannondale C3 alloy bar, stem and seatpost
- Clearance for 35mm tyres
All UK Mainland Bike Deliveries Over £999 - Free Bike orders are sent via TNT/FedEx with estimated delivery within 1 working day after quoted dispatch time (For Scottish Highlands, Northern Ireland, Isle of Man and the Channel Islands deliveries please allow an additional 1-4 working days).Bike orders under £999 will incur a £20 delivery fee.
Free Delivery On Orders Over £50.00 - When you spend more than £50.00 at 99 Bikes deliveries to a UK mainland address will be free (excludes bikes & large items).Certain regions and territories of the UK will incur additional charges, details of which can be found on our delivery page.
Click & Collect Orders -Please be aware Click & Collect orders may take some time to fulfil. We advise not to travel to your chosen store until you have been notified that your order is ready for collection.
At 99 Bikes our priority is to ensure that you are highly satisfied with your purchase. In the unlikely event that you aren't, we offer a 30 day online return policy* in which you can receive a full refund. Any item including bikes (with the exception of food) can be returned to us for any reason provided it is received by us in an unused and resalable condition in or with its original packaging which must be undamaged.
Find Out More About Returns >

Model Code: C12402U
Name: Synapse Carbon 4
Category: Road
Platform: Synapse Carbon
Segment: Road
Frame: Synapse Carbon, SmartSense enabled, Proportional Response size-specific design, BSA threaded BB, flat mount brake, 12x142mm thru axle, thru-tube internal cable routing with Switch Plate, removable fender bridge, hidden rack/fender mounts
Fork: Synapse Carbon, integrated crown race, Proportional Response size-specific design, 12x100mm thru-axle, thru-tube internal routing, hidden fender mounts
Rims: RD 3.1, 28h, 21mm IW
Hubs: (F) Formula CL-712, 12x100mm centerlock / (R) Formula RXC-400, 12x142mm centerlock
Spokes: Stainless Steel, 14g
Tires: Vittoria Zaffiro Pro Reflective, 700 x 30c
Pedals: Not included
Crank: Shimano Tiagra, BSA, 50/34
Bottom Bracket: Shimano BSA
Chain: Shimano HG54, 10-speed
Rear Cogs: Shimano Tiagra, 11-34, 10-speed
Front Derailleur: Shimano Tiagra, braze-on
Rear Derailleur: Shimano Tiagra GS
Shifters: Shimano Tiagra hydraulic disc, 10-speed
Handlebar: Cannondale 3, 6061 Alloy, Compact
Grips: Fabric Knurl Bar Tape
Stem: Cannondale 3, 6061 Alloy, 31.8, 7°
Headset: Synapse Sealed Bearing, integrated, 1-1/4"-1-1/8"
Brakes: Shimano Tiagra hydraulic disc, 160/160mm RT64 rotors
Brake Levers: Shimano Tiagra hydraulic
Saddle: Fizik Aliante Delta, S-alloy rails
Seatpost: Cannondale 3, 6061 Alloy, 27.2 x 350mm (48-56), 400mm (58-61)
Speeds: 10
Sizes: Available 48, 51, 54, 56, 58, 62
Connectivity: Cannondale Wheel Sensor
Wheel Size: 700c
Extra's: Trainer-compatible Thru-Axle