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2021 Cannondale

Synapse Carbon Disc Ultegra

A carbon frame endurance bike with high-end components and shimano ultegra hydraulic disc brakes.

Manufacturer Price

$3,300
Weight18.7 lbs  
FrameCarbon
ForkCarbon
Wheels700c Aluminum
Drivetrain2 × 11
GroupsetUltegra
BrakesShimano Ultegra Hydraulic Disc
Where to Buy
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

39 mph

Synapse Carbon Disc Ultegra

39 mph

Similar Bikes

Highest gear

(descending)

Reviews

Summary

The Cannondale Synapse is celebrated for its smooth ride quality, versatile tyre clearance, and stable yet responsive handling, making it a standout in the endurance category. Its comfort and efficiency are frequently highlighted, with many reviewers praising its ability to blend speed with a forgiving ride position. However, the SmartSense system and some component choices have drawn mixed reactions, with some finding them innovative and others seeing them as unnecessary additions that add weight and complexity.

Pros
  • Smooth ride quality

  • Versatile tyre clearance

  • Stable yet responsive handling

  • Comfortable endurance geometry

  • Efficient power transfer

Cons
  • Controversial SmartSense system

  • Weight concerns

  • Some component choices questioned

  • SmartSense adds complexity

  • Mixed reactions to electronic aids

Key Quotes
When I think of this bike, I just think of butter. Everything about it felt super smooth.
Cycling Tips logoCycling Tips
The latest Synapse is the best iteration of the model to date.
Cyclist logoCyclist
The Synapse is a real joy to ride in these times, despite shorter outings.
BikeRadar logoBikeRadar
With the 2022 Cannondale Synapse, you’ll be prepared for almost any eventuality, as long as most of it happens on asphalt.
Gran Fondo Magazine logoGran Fondo Magazine
The Synapse shines brightest in providing all-day ride comfort and handling characteristics that inspire confidence.
Road Bike Action

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Road Bike Action
CANNONDALE SYNAPSE CARBON RLE BIKE TEST - Road Bike Action

Dec 2022 · RBA Staff

Radar comes standard

Highs
  • SmartSense radar technology

  • All-day ride quality

  • Understated graphics

  • Threaded bottom bracket

  • Standard 27.2 seatpost

  • Standard Shimano crankset

  • Hidden fender mounts

  • 12-speed Ultegra Di2 compact gearing

  • Handling characteristics that inspire confidence

  • Stable feel without being sluggish

  • Tubeless-ready wheels

  • Price includes tech features

Lows
  • Radar system creates too many false warnings

  • Charging system is finicky and requires removing battery pack

  • Battery capacity requires charging after every ride

  • Heavy wheels (1740 grams)

  • Lack of flashy finishes

  • Could be optimized with 105 gruppo and lighter wheels at same price

  • Hard to find a better-optimized package with 105 and lighter wheels

Read Review

Cycling Tips
2022 Cannondale Synapse Carbon 2 RLE review: One smooth ride - CyclingTips

Aug 2022 · Dave Rome

An overhauled endurance road platform meets modern all-road capability. It’s wonderful but there's a but.

Highs
  • Smooth ride quality, versatile tyre clearance, stable yet-not-sluggish handling, Shimano Ultegra Di2, easy to service component fitments, classy subdued styling.

Lows
  • SmartSense and the fact it’s a forced feature you’re paying extra for, wheels could be fancier for the money, mis-matched thru-axles.

Read Review

Gran Fondo Magazine
First ride review: 2022 Cannondale Synapse – Safer on the road thanks to Cannondale SmartSense?

Jan 2022 · By

Cannondale have overhauled the Synapse, adding an integrated radar and lights. Can it offer improved safety on the road? Read on to find out.

Highs
  • Added safety for cyclists

  • The lights switch from daytime to night mode automatically

  • Mounting points for mudguards etc.

  • Predictable handling

Lows
  • Lack of cable integration up front

  • Somewhat lacking in long-distance comfort

Read Review

BikeRadar
Cannondale Synapse Disc Ultegra long-term review

Jan 2021 · Felix Smith

This is an initial score and could change as I spend more time on the bike

Highs
  • Cannondale's SAVE 'micro-suspension' is incredibly effective at taming rough tarmac and the low gearing and 32mm tyre clearance encourages more adventurous cycling

Lows
  • Messy cables up front detract from the otherwise clean overall design and the wheels and tyres are lacking modern endurance spec

Read Review

Cycling Weekly
Cannondale Synapse Carbon 105

Nov 2020 · Vern Pitt

The Cannondale Synapse Carbon 105 is a popular endurance bike that still has a spring in its step

Highs
  • Sprightly handling

  • Great at reducing road buzz

  • Solid spec

  • Good value

Lows
  • Heavy wheels

  • Frame probably due an update

Read Review

Cyclist
Cannondale Synapse Carbon Ultegra review

Mar 2020 · Joe Robinson

The Cannondale Synapse is a bike for all occasions in this modern world of mixed-terrain riding

Highs
  • Comfortable

  • Suitable for mixed terrain

  • 'Affordable'

Lows
  • Doesn’t come with tubeless tyres

Read Review

road.cc
Cannondale Synapse Disc Sora

Sep 2018 · Stu Kerton

A quick and versatile bike based around a great frameset, though the brakes aren't the best

Read Review

Velo
Pro Bike Gallery: Sebastian Langeveld’s Cannondale Synapse

Apr 2018 · VeloNews.com

EF Education First-Drapac rider Sebastian Langeveld will ride disc brakes at Roubaix after making the podium in 2017.

Read Review

Geometry
Specs
Build
Frame

BallisTec Carbon, Di2 ready, SAVE, BB30a, flat mount, 12mm thru axle, internal cable routing, removable fender bridge, Di2 ready, SAVE, BB30a, Flat mount, 12mm thru axle, Internal cable routing, Removable fender bridge

BB StandardPF30, Press Fit

Fork

BallisTec Carbon, SAVE, integrated crown race, 12x100mm thru-axle, internal routing, size-specific design - 44-48: 1 1/8" steerer, 60mm rake 51-54: 1-1/8" - 1-1/4" tapered steerer, 55mm rake 56-61: 1-1/8" - 1-3/8" tapered steerer, 45mm rake

Bottom Bracket

Cannondale Alloy PressFit30

Headset

Synapse, 1-1/4" lower bearing, 25mm top cap

Stem

Cannondale 3, 6061 alloy, 7-degree

Handlebar

Cannondale 3, 6061 alloy, Compact

Saddle

Fabric Scoop Shallow Sport, steel rails

Seatpost

Cannondale 3, 6061 Alloy, 25.4 x 350mm (46-56), 400mm (58-61)

TypeRigid

Grips

Cannondale Grip Bar Tape w/Gel, 3.5mm

Groupset
Rear Derailleur

Shimano Ultegra GS

Front Derailleur

Shimano Ultegra, braze-on

Crank

Cannondale 1, BB30a, FSA rings, 50/34

Shifters

Shimano Ultegra hydro disc, 2x11

Cassette

Shimano 105, 11-34, 11-speed

Chain

Shimano HG601, 11-speed

Brakes

Shimano Ultegra hydro disc, 160/160mm RT30 rotors

TypeShimano Ultegra Hydraulic Disc

Brake Levers

Shimano Ultegra hydro disc

Wheels
Rims

Fulcrum Racing 600 DB, Alloy clincher, 26mm deep

Spokes

Fulcrum, Stainless steel

Front Hub

Fulcrum Racing 600 DB, 12x100

Rear Hub

Fulcrum Racing 600 DB, 12x142

Tires

Vittoria Rubino Pro Bright Black, 700x30c

Rider Notes
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First added July 15

Last updated October 31

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