Cannondale Synapse Carbon 105 Bike - 2020

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Take on longer rides with the Cannondale Synapse Carbon 105 bike. It's a road bike that's light, stiff, fast and surprisingly comfortable thanks to Endurance Race geometry and SAVE micro-suspension.

  • Features

    • Endurance Race geometry positions you forward enough to go hard but upright enough to go long
    • SAVE micro-suspension technology in the frame, fork, bar and seatpost insulates you from bumps while keeping you connected to the road
    • Light enough for quick climbing and stiff enough for sprinting thanks to an asymmetric design, refined tube shapes and dialed carbon layup
    • A removable seatstay bridge and hidden fender mounts keep you grinding on any road, in any weather
    • Pedals not included; specs and images are subject to change


    Free Adjustment Period:
    New bikes go through a normal break-in period, after which they should be readjusted. All bicycles sold at REI include free adjustments for one year after purchase date—as many times as you need. Included: derailleur and brake adjustments, lateral wheel truing, hub and headset bearing adjustments, tire inflation and chain lubrication. Not included: replacement or installation of new components or accessories, any other services. Call your local REI Co-op Bike Shop for more information.
    View all Cannondale Endurance Bikes
  • Technical Specs

    Best Use

    Road Cycling

    Bike Frame Material



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

    Bike Suspension

    No Suspension


    Cannondale 1, BB30a, FSA rings, 50/34

    Bottom Bracket

    Cannondale Alloy PressFit30


    Shimano 105 hydro disc, 2x11

    Front Derailleur

    Shimano 105, braze-on

    Rear Derailleur

    Shimano 105 GS

    Rear Cogs

    Shimano 105, 11-34, 11-speed

    Number of Gears

    22 gear(s)

    Brake Type

    Hydraulic Disc Brake


    Shimano 105 hydro disc, 160/160mm RT30 rotors

    Brake Levers

    Shimano 105 hydro disc


    RD 2.0, 28h

    Front Hub

    Formula CL-712, 12x100mm Center Lock

    Rear Hub

    Formula RXC-400, 12x142 Center Lock

    Wheel Size



    Vittoria Zaffiro Pro Bright Black, 700c x 30mm

    Tire Width

    30 millimeters

    Handlebar Shape

    Drop Bar


    Cannondale 3, 6061 alloy, compact


    Cannondale 3, 6061 alloy, 7-degree


    Fabric Scoop Shallow Sport, steel rails


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


    Shimano HG601, 11-speed


    20 lbs. 0.2 oz.

    Bike Weight

    Bike weight is based on median size, as sold, or the average of two median sizes.



  • Size Chart

    51 CM 54 CM 56 CM 58 CM 61 CM
    Reach 37.7 38.2 38.6 39.3 40.2
    Stack 55 57 59 61 64
    Effective Top Tube 53.1 54.7 56.1 57.9 60.4
    Seat Tube Center-Top 44.3 48.0 52.0 55.0 59.0
    Standover Height 74.2 77.3 80.4 83.3 86.8
    Head Tube Length 13.7 16.1 17.3 19.7 22.9
    Head Tube Angle (degrees) 71.7° 71.7° 73.0° 73.0° 73.0°
    Seat Tube Angle (degrees) 74.3° 73.9° 73.5° 73.0° 72.5°
    Bottom Bracket Height 7.5 7.3 7.3 7.0 7.0
    Wheelbase 99.4 100.8 99.5 100.9 102.8
    Chainstay 41.0 41.0 41.0 41.0 41.0
    Fork Offset 5.5 5.5 4.5 4.5 4.5

    Sizing Notes

    Measurements are stated in centimeters unless otherwise indicated.

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