Bike Comparison
    MSRP
    $2,400
    $2,800
    Where to Buy
    $1

    At

    $1

    At

    Category
    RaceRace
    3.9
    4.9
    CarbonCarbon
    Fork
    CarbonCarbon
    Wheels
    AluminumAluminum
    Wheel Size
    700c700c
    Brakes
    RimRim
    Groupset
    105, FSAUltegra, FSA
    Drivetrain
    2 × 112 × 11
    Brand Site

    cervelo.com

    cervelo.com

    Summary
    The Cervélo R2 105 5800 and Cervélo R2 Ultegra 6800 are both carbon frame race bikes with rim brakes. The R2 Ultegra 6800 has better components.
    Similar Bikes
    Accessories
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Terrain
    smoothrugged
    R2 105 5800
    R2 Ultegra 6800
    Other Race bikes
    Gear Range

    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

    R2 105 5800

    39 mph

    R2 Ultegra 6800

    Highest gear

    (descending)

    Spec Level

    Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

    Geometry
    Specs
    Frame

    Carbon fiber

    BB StandardPF30, Press Fit

    Carbon fiber

    BB StandardPF30, Press Fit

    Fork

    Cervélo All-Carbon, Tapered R2 Fork

    Cervélo All-Carbon, Tapered R2 Fork

    Bottom Bracket

    FSA PF-30

    FSA PF-30

    Headset

    FSA IS2 1-1/8 X 1-3/8”

    FSA IS2 1-1/8 X 1-3/8”

    Stem

    3T ARX

    3T ARX

    Handlebar

    3T Ergonova

    3T Ergonova

    Saddle

    Selle Royal Seta

    Selle Royal Seta

    Seatpost

    FSA SLK

    FSA SLK

    Groupset
    Rear Derailleur

    105 5800, 11 spd

    Ultegra 6800, 11 spd

    Front Derailleur

    105 5800, 11 spd

    Ultegra 6800, 11 spd

    Crank

    FSA Gossamer BBright™ 50/34

    FSA Gossamer BBright™ 50/34

    Shifters

    105 5800, 11 spd

    Ultegra 6800, 11 spd

    Cassette

    105 5800, 11 spd 11-28

    105 5800, 11 spd 11-28

    Chain

    105 11 spd

    105 11 spd

    Brakes

    Shimano 105 5800

    Ultegra 6800

    Wheels
    Rims

    RS010

    RS010

    Tires

    Continental Grand Sport Race 700X25c

    Continental Grand Sport Race 700x25c

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