The Cannondale Synapse Carbon 2 is an endurance road bike that blends comfort, speed and everyday versatility. It was crowned BikeRadar's Bike of the Year 2025, with testers praising its balance of comfort, handling, fit, clever features and value.
The frame uses Cannondale's Proportional Response carbon construction, tuning stiffness and compliance to each frame size so every rider gets the same balanced feel. At under 1150g, with wind-tunnel-informed tube shapes, it's light and slippery without being harsh. Generous tyre clearance (up to around 42mm), hidden mudguard mounts and a downtube StashPort make it just as happy on rough lanes and long winter miles as on fast summer group rides.
The build is a real highlight. Shimano Ultegra Di2 R8100 delivers crisp, wireless 12-speed electronic shifting and powerful hydraulic disc braking, and the DT Swiss ERC 45 carbon wheels are light, stiff and tubeless ready. Vittoria Rubino Pro 32mm tyres round off a smooth, quick-rolling package.
Features
- Sub-1150g Synapse Carbon frame with Proportional Response construction
- Aero-informed tube shaping and integrated cable routing
- Downtube StashPort with large StashBag storage bag included
- Clearance for tyres up to around 42mm, plus hidden mudguard mounts
- SmartSense Gen 2.0 compatible
- Shimano Ultegra Di2 R8100 12-speed electronic groupset with hydraulic discs
- DT Swiss ERC 45 carbon wheels, tubeless ready
- HollowGram 27 SL carbon seatpost
Specifications
DisciplineRoad
MaterialCarbon
Front TravelRigid
Rear TravelHardtail
Wheel Size700c
Frame - Synapse 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, mudguard mounts
Fork - Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/2" Delta steerer, 55mm offset, mudguard mounts
Rims - DT Swiss ERC 45, carbon, 24mm inner width, 45mm depth, 24h, tubeless ready
Hubs - (F) DT Swiss 370, 12x100mm centerlock / (R) DT Swiss 370, 12x142mm centerlock
Spokes - DT Swiss
Tyres - Vittoria Rubino Pro IV, 700x32c
Pedals - Not included
Crank - Shimano Ultegra R8100, 50/34
Bottom Bracket - Shimano BSA 68
Chain - Shimano Ultegra, 12-speed
Cassette - Shimano Ultegra R8100, 11-34, 12-speed
Front Derailleur - Shimano Ultegra Di2 R8150
Rear Derailleur - Shimano Ultegra Di2 R8150
Shifters - Shimano Ultegra Di2 R8170, wireless, 12-speed
Handlebar - Vision Trimax Aero Alloy
Bar Tape - Fizik Tempo Bondcush Soft, 3mm
Stem - Cannondale C1 Conceal, alloy, 31.8, -6°
Headset - Integrated, 1-1/8" - 1-1/2"
Brakes - Shimano Ultegra R8170 hydraulic disc, 160/160mm CL800 rotors
Brake Levers - Shimano Ultegra Di2 R8170 hydraulic disc
Saddle - Fizik Vento Argo X5, 140mm
Seatpost - HollowGram 27 SL, carbon, 2-bolt clamp, 330mm, 15mm offset
Sizes - 48, 51, 54, 56, 58, 61cm
Extras - Large StashBag downtube storage bag
Synapse Carbon 2 2026
- Road
- Carbon frame
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The Cannondale Synapse Carbon 2 is an endurance road bike that blends comfort, speed and everyday versatility. It was crowned BikeRadar's Bike of the Year 2025, with testers praising its balance of comfort, handling, fit, clever features and value.
The frame uses Cannondale's Proportional Response carbon construction, tuning stiffness and compliance to each frame size so every rider gets the same balanced feel. At under 1150g, with wind-tunnel-informed tube shapes, it's light and slippery without being harsh. Generous tyre clearance (up to around 42mm), hidden mudguard mounts and a downtube StashPort make it just as happy on rough lanes and long winter miles as on fast summer group rides.
The build is a real highlight. Shimano Ultegra Di2 R8100 delivers crisp, wireless 12-speed electronic shifting and powerful hydraulic disc braking, and the DT Swiss ERC 45 carbon wheels are light, stiff and tubeless ready. Vittoria Rubino Pro 32mm tyres round off a smooth, quick-rolling package.
Features
- Sub-1150g Synapse Carbon frame with Proportional Response construction
- Aero-informed tube shaping and integrated cable routing
- Downtube StashPort with large StashBag storage bag included
- Clearance for tyres up to around 42mm, plus hidden mudguard mounts
- SmartSense Gen 2.0 compatible
- Shimano Ultegra Di2 R8100 12-speed electronic groupset with hydraulic discs
- DT Swiss ERC 45 carbon wheels, tubeless ready
- HollowGram 27 SL carbon seatpost
Specifications
DisciplineRoad
MaterialCarbon
Front TravelRigid
Rear TravelHardtail
Wheel Size700c
Frame - Synapse 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, mudguard mounts
Fork - Synapse Carbon, integrated crown race, 12x100mm thru-axle, flat mount disc, internal routing, 1-1/8" to 1-1/2" Delta steerer, 55mm offset, mudguard mounts
Rims - DT Swiss ERC 45, carbon, 24mm inner width, 45mm depth, 24h, tubeless ready
Hubs - (F) DT Swiss 370, 12x100mm centerlock / (R) DT Swiss 370, 12x142mm centerlock
Spokes - DT Swiss
Tyres - Vittoria Rubino Pro IV, 700x32c
Pedals - Not included
Crank - Shimano Ultegra R8100, 50/34
Bottom Bracket - Shimano BSA 68
Chain - Shimano Ultegra, 12-speed
Cassette - Shimano Ultegra R8100, 11-34, 12-speed
Front Derailleur - Shimano Ultegra Di2 R8150
Rear Derailleur - Shimano Ultegra Di2 R8150
Shifters - Shimano Ultegra Di2 R8170, wireless, 12-speed
Handlebar - Vision Trimax Aero Alloy
Bar Tape - Fizik Tempo Bondcush Soft, 3mm
Stem - Cannondale C1 Conceal, alloy, 31.8, -6°
Headset - Integrated, 1-1/8" - 1-1/2"
Brakes - Shimano Ultegra R8170 hydraulic disc, 160/160mm CL800 rotors
Brake Levers - Shimano Ultegra Di2 R8170 hydraulic disc
Saddle - Fizik Vento Argo X5, 140mm
Seatpost - HollowGram 27 SL, carbon, 2-bolt clamp, 330mm, 15mm offset
Sizes - 48, 51, 54, 56, 58, 61cm
Extras - Large StashBag downtube storage bag
Returns Information
Reviews
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