Synapse Disc 5 105

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Endurance Refined.

Spirited rides with the group, taking the long way home on the daily commute, or enjoying that charity ride in blissful comfort, the Synapse Alloy is built for enjoying the miles, at whichever pace you choose.

Synapse Alloy is:

  • Equipped with disc brakes on several models for great stopping and control.
  • SAVE PLUS micro-suspension provides a ride that is uncannily smooth.
  • Rear rack mounts and extra clearance for fenders adds commuter versatility to the Synapse line.

Rider Profile:

The ideal first road bike for someone looking for comfort, performance, versatility and value in equal measure.


  • SAVE PLUS Alloy Micro-Suspension
    By flattening and butting the chain stays and triaxially forming the seat stays, we create a rear stay assembly that allows significant deflection vertically to absorb road shock and vibration, while staying extremely rigid laterally for power transfer and confident cornering.
  • Endurance Geometry
    Compared with our Elite race geometry, the Synapse geometry features a taller head tube (2-2.5cm taller), gently sloping top tube, slightly relaxed head angle and longer wheelbase. This combination provides a more upright riding position and a lively, yet stable feel. It’s confidence inspiring and relaxing but avoids the sluggish feel and awkward handling of many “comfort” road bikes.
  • Optimized 6061 Alloy Construction
    Cannondale’s legendary double-pass smooth welds join optimally shaped taper-butted tubes for a great combination of svelte light weight, stiffness and durability.
  • Carbon Bladed Fork
    Carbon fork blades with integrated SAVE features provide additional comfort and sharp handling.
  • BB30 System
    Cannondale invented BB30 13 years ago to take crank and frame performance to the next level and it has become THE industry standard for stiffness and light weight. Found on both the 105 and Tiagra equipped models.
  • Rack and Fender Mounts
    Subtle, understated rack and fender mounts add versatility.
  • Disc Brakes
    The Synapse Alloy is the first Cannondale road bike to feature disc brakes for great stopping power and exceptional control.


Synapse Alloy Disc, Optimized 6061 Alloy, SAVE PLUS, BB30


Synapse SAVE Disc, Carbon blades, 1-1/8"


FSA Gossamer, BB30, 50/34

Bottom Bracket



Shimano 105 5700

Cog Set

Shimano Tiagra 4600, 12-30, 10-speed


KMC X10, 10-speed

Front Derailleur

Shimano 105 5700, 31.8 clamp

Rear Derailleur

Shimano 105 5700


Maddux RD 3.0 Disc, 28-hole (32h 58 -61cm)


Formula, DC-20 front, DC-22 rear


Schwalbe Lugano PP, 700x25c


Wellgo w/ Clip and Strap


Promax Render R, 160mm front, 140mm rear


Cannondale C3 Compact, butted 6061 alloy


Cannondale C3, 31.8, 6 deg.


Synapse Si, 25mm top cap

Brake Levers

Shimano 105 5700


Stainless Steel, 15g


Cannondale Grip Bar Tape w/Gel, 3.5mm


Cannondale Stage Ergo w/ Crmo Rails

Seat Post

Cannondale C3, Alloy, 25.4x300mm

Rear Shock



by PowerReviews
Synapse Disc 5 105

(based on 3 reviews)

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      Best Uses

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        Reviewed by 3 customers

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        (2 of 5 customers found this review helpful)


        It's ok, not great

        By Schoolbus

        from Charlotte, NC

        About Me Avid Cyclist

        Verified Reviewer



            Best Uses

              Comments about Synapse Disc 5 105:

              I bought it for the name, Cannondale, I always wanted one, and the disc brakes. The bike is rather heavy compared to the others in the club that I ride with. The brakes are very cool but after 4 months are now getting noisy when used. Discs maybe the way to go in the dirt but on the road it's a waste.The rear derailer is starting to jump too. back to the shop it goes. My riding is getting more advance and I seemed to have out grown it already.

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              (3 of 4 customers found this review helpful)


              Jury is still out.

              By climb4fun

              from greenville,sc

              About Me Avid Cyclist



                  Best Uses

                    Comments about Synapse Disc 5 105:

                    I live in South Carolina and ride in the mountains. I don't like using my brakes but when I do it is with force, so I figured replacing discs and pads would be more practical than replacing rims and pad. I have ridden mountain bikes with disc brakes for years and I am an advocate. So, I hate to complain about the brakes, but the front brake is ridiculous, it sounds like gears grinding with even moderate pressure applied. I feel it is a harmonics issue with the carbon fibre fork, but since I bought this bike for the disc brakes, I will live with it. However there is more. The first time I rode it, I had a flat less than 10 miles into a 50 mile ride, only the third flat I have ever had on the road. Not the bikes fault, but a little foreboding. The next time I rode, I went down hard in a little right hand turn that I have done hundreds of times, I wrote it off as just not being adjusted to the new bike. This past weekend I was riding up a little incline and noticed the chainring rubbing during slightly hard pedaling, I weigh 140 pounds, I have never flexed a frame or wheels, so I attributed that to the "lightweight" frame and again felt obliged to accept it. Then on the way down from one of my favorite climbs, in a hard left hand turn at about 30 mph, the rearend tried to pass the front and I could hear the rims complaining as the bike struggled to maintain its line. Luckily my hands were not on the brake levers or it could have been very bad. I did taste a little vomit at the bottom of the descent. Afterwards I was wondering if that wobble may have been from the frame or wheels flexing on a rough spot in the curve. Aesthetically the bike is marvelous, beautiful paint and finish.

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                    • No

                    (2 of 2 customers found this review helpful)


                    smooth ride

                    By zac

                    from seattle,wa

                    About Me Avid Cyclist

                    Verified Reviewer



                        Best Uses

                          Comments about Synapse Disc 5 105:

                          I just bought the 48 and took it out on its first ride today. 22 miles later, it shifts well rides smooth and of course stops on a dime! I love it

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