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1898223 / 54294121840986

Product Details

Cannondale Synapse Carbon 1 Endurance Road Bike

Twenty years ago, the original Synapse quietly reshaped road cycling by offering a fresh alternative to both aggressive race bikes and overly relaxed comfort models. It combined race-level performance and weight with genuine rider-friendly comfort and handling, effectively launching the Endurance road bike category.

Now in its sixth generation, the latest Synapse Carbon Road Bike continues to lead, redefining road performance with a sub-1000-gram carbon frame, wind-tunnel-optimised tube shapes, and class-leading stiffness-to-weight.

Designed for speed, distance, and comfort, it features 20% more compliance than its predecessor for a smoother ride, Proportional Response Construction for size-specific tuning, and thoughtful details like the StashPort downtube storage system, hidden top tube bag mounts, and room for high-volume tyres. Trusted by riders like Lachlan Morton for epic challenges, the Synapse delivers unreal performance for real-world roads.

Innovative Frame Design
The Cannondale Synapse features a refined Hi-MOD carbon layup that reduces frame weight by over 100 grams while maintaining the stiffness, ride quality, and durability the Synapse is known for. Each frame size benefits from size-specific construction, ensuring an optimal balance of stiffness and compliance across the range.

A D-shaped seatpost improves aerodynamic efficiency and enhances vertical compliance, helping to reduce rider fatigue on long days in the saddle. Cannondale’s proprietary V-shaped Delta Steerer allows for fully internal cable routing while reducing the frontal area of the head tube for improved aerodynamic performance.

With generous tyre clearance allowing up to 48 mm at the front and 42 mm at the rear, the Synapse is built to handle a wide variety of road surfaces, making it ideal for long-distance and mixed-terrain riding.

Storage Solutions
The integrated StashPort storage system sits discreetly beneath the downtube bottle cage, offering practical space for tools, nutrition, and essentials via the included StashBag.

Wheel Sensor
A Cannondale Wheel Sensor provides accurate data on speed, distance, and route tracking, while also offering maintenance reminders and more through the Cannondale App.

Features
  • Frame: Synapse Hi-MOD Carbon, Proportional Response construction, integrated cable routing, downtube Stashport, 12x142 thru-axle, UDH, BSA 68mm threaded bottom bracket, flat mount disc, integrated seat binder, fender mounts
  • Fork: Synapse Hi-MOD 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
  • Headset: Integrated, 1-1/8" to 1-1/2"
  • Rear Derailleur: Shimano Ultegra Di2 R8150
  • Shifters: Shimano Ultegra Di2 R8170, wireless, 12 speed
  • Chain: Shimano Ultegra, 12 speed
  • Crankset: Shimano Ultegra R8100, 50/34, with 4iiii PRECISION 3+ PRO power meter
  • Cassette: Shimano Ultegra R8100, 11-34, 12 speed
  • Brakes: Shimano Ultegra R8170, 160mm CL800 rotors
  • Brake Levers: Shimano Ultegra Di2 R8170 hydraulic disc
  • Front Hub: DT Swiss 350, 12x100mm, centrelock
  • Rear Hub: DT Swiss 350, 12x142mm, centrelock
  • Rims: Reserve 42 | 49 Turbulent Aero, 24h, tubeless ready
  • Spokes: Sapim CX-Ray Aero, straight pull
  • Tyres: Vittoria Corsa PRO Control, 700x32c, tubeless ready
  • Handlebar: Cannondale SystemBar R-One, low drag, full carbon integrated bar and stem, internal routing
  • Handlebar Tape: Fizik Tempo Bondcush Soft, 3mm
  • Stem: Cannondale SystemBar R-One, low drag, full carbon integrated bar and stem, internal routing
  • Saddle: Fizik Vento Argo R5, 140mm
  • Seatpost: Cannondale C1 Aero 27 Carbon, 0mm offset (44–48cm), 20mm offset (51–61cm)
  • Connectivity: Cannondale Wheel Sensor
  • Extras: Large StashBag downtube storage bag, Fillmore tubeless valves
Highlights
  • Synapse Hi-MOD Carbon Frame
  • Cannondale SystemBar R-One Integrated Bar/Stem
  • Shimano Ultegra Di2 Powermeter Groupset
  • Reserve 42 / 49 Carbon Wheelset
  • Cannondale Wheel Sensor
  • StashPort Downtube Storage
Specifications
Model
Synapse Carbon 1
Bottom Bracket [Maker]
Shimano
Bottom Bracket Standard
BSA
Brakes [Kind]
Hydraulic Disc
Brakes [Maker]
Shimano
Brakes [Model]
Ultegra R8170
Cassette [Gearing]
11-34
Cassette [Maker]
Shimano
Cassette [Model]
Ultegra R8100
Chain [Maker]
Shimano
Chain [Model]
Ultegra
Chainring [Gearing]
50/34
Crank [Maker]
Shimano
Crank [Model]
Ultegra R8100
Discipline Compatibility
Road
E-Bike
No
F Hub [Maker]
DT Swiss
F Hub [Model]
350
Family
Synapse
FD [Maker]
Shimano
FD [Model]
Ultegra Di2 R8150
Fenders Mounts
Yes
Fork [Axle Diameter]
12 mm
Fork [Axle Type]
Thru-Axle
Fork [Brake Type]
Disc
Fork [Maker]
Cannondale
Fork [Material]
Carbon
Fork [Model]
Synapse Hi-MOD Carbon
Fork [Rake]
55 mm
Fork [Wheel Size]
700c
Frame [Hanger Standard]
UDH
Frame [Material]
Carbon
Frame [Tire Clearance]
48c mm
Frame [Travel]
0 mm
Frameset
No
Gearing [Configuration]
2x
Gearing [Kind]
Conventional
Gender
Unisex
Handlebar [Kind]
Drop
Handlebar [Maker]
Cannondale
Handlebar [Material]
Carbon
Handlebar [Shape]
Drop bar
Headset [Maker]
Cannondale
Headset [SHIS]
1-1/8" to 1-1/2"
Power Meter [Maker]
4iiii
Power Meter [Model]
Precision Pro
R Hub [Maker]
DT Swiss
R Hub [Model]
350
Rack Mounts
No
RD [Maker]
Shimano
RD [Model]
Ultegra Di2 R8150
Saddle [Maker]
Fizik
Saddle [Width]
140 mm
Seatpost [Diameter]
27
Seatpost [Kind]
Rigid
Seatpost [Length]
330 mm
Seatpost [Maker]
Cannondale
Seatpost [Material]
Carbon
Shifters [Maker]
Shimano
Shifters [Model]
Ultegra Di2 R8170
Shifting
Electronic
Stem [Material]
Carbon
Sub Family
Synapse Carbon
Suspension Configuration
Rigid
Tires [Maker]
Vittoria
Tires [Width]
32 mm
Wheels [Configuration]
Front+Rear
Wheels [Kinds]
Tubeless Ready
Wheelset [Maker]
Reserve
Wheelset [Material]
Carbon
Wheelset [Model]
42 | 49 Turbulent Aero
Product code
1898223 / 54294121840986
Size Guide
Cannondale SuperSix EVO 2023 onwards

All measurement in mm unless otherwise stated.

Reviews
Rating 5 out of 5
5
Value of Product
5
Quality of Product
5
Rating 5 out of 5
Anonymous,
Verified purchaser
Rating 5 out of 5
Sean P,
Verified purchaser

Bought my new pride and joy from Sigma Sports. The price I paid was the best I could find online. Order to delivery was very reassuring and a true delight! This will not be my last order from Sigma Sports (I have no doubt!)

Shipping & Returns

Free UK delivery on orders over £50. Orders are dispatched within 1-2 working days and typically arrive 1-2 working days later.

Return unused items in their original packaging within 30 days of delivery. Return postage is £3.50.

Q & A

1 question answered

  1. What size cranks, handlebar/stem width/length does the 56cm frame come with? Can these be changed prior to purchase?

    Asked by Seb (Cardiff)

    1. Hi there, Please contact the sales team directly for help with this, Many thanks Joe W

      Joe W