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    RD12023 Principia
    Recommended
    MSRP
    ($3,126)
    Where to Buy
    —
    $1

    At

    Category
    		Race
    5.3
    Frame
    		Carbon
    		Carbon
    Wheels
    		Aluminum
    Wheel Size
    		700c
    		Shimano 105 Hydraulic Disc
    		105
    Drivetrain
    		2 × 11
    Brand Site

    principiabikes.com

    Summary
    		The Principia RD1 is a carbon frame race bike with upper mid-range components and shimano 105 hydraulic disc brakes.

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Rider Position
    relaxedaggressive
    Terrain
    smoothrugged
    RD1
    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

    RD1

    Highest gear

    (descending)

    Spec Level

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

    Geometry
    Specs
    RD12023 Principia
    Frame

    Full monocoque carbon

    BB Standard: BSA, 68mm, Threaded

    Colors: Black; Green

    Fork

    Full monocoque carbon

    Bottom Bracket

    Shimano BB-RS500 pressfit

    Headset

    FSA No 42 1 1/8"

    Stem

    Ritchey Comp 4-Axis-44 6D Aluminium, 31,8x100mm

    Handlebar

    Ritchey Comp Evo Curve, 420 mm.

    Saddle

    Ritchey Comp Streem

    Seatpost

    Ritchey Comp 2-Bolt Aluminium, 31,6x400mm

    Type: Rigid

    Pedals

    Not included

    Groupset
    Rear Derailleur

    Shimano 105 R7000

    Front Derailleur

    Shimano 105 R7000

    Crank

    Shimano 105 FC-R7000 50/34T 170mm

    Cassette

    Shimano CS-R7000 11sp 11-28T

    Chain

    Shimano CN-HG601-11

    Brakes

    Front: Shimano 105 R7000 hydraulic disc brake, 160 mm. rotor, Rear: Shimano 105 R7000 hydraulic disc brake, 160 mm. rotor

    Type: Shimano 105 Hydraulic Disc

    Wheels
    Rims

    Miche Reflex DX

    Tires

    Panaracer Race D Evo4 700x28C

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