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    MSRP
    Where to Buy
    $1

    At

    Category
    Crosscountry
    Weight
    26.9 lbs
    3.9
    Frame
    Aluminum
    RST AERIAL
    Wheels
    Aluminum
    Wheel Size
    27.5″
    Tektro Hydraulic Disc
    Deore
    Drivetrain
    1 × 10
    Suspension
    Hardtail
    Front Travel
    80mm
    Brand Site

    en.author.eu

    Summary
    The Author Sonic 27.5 is a 27.5″ aluminum frame hardtail crosscountry bike with upper mid-range components.

    Ask 99 Spokes

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Sonic 27.5
    Other Crosscountry 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)

    24 mph

    Sonic 27.5

    Highest gear

    (descending)

    Geometry
    Specs
    Frame

    triple butted hydroformed alloy 6061 27.5"

    ColorRed

    Fork

    RST Aerial 27.5 TnL air, lock out (80 mm)

    Travel80mm

    Spring TypeAir

    Stem

    AUTHOR alloy

    Handlebar

    AUTHOR Flat Top bar 9° 620 / 640 mm

    Saddle

    AUTHOR Champion

    Seatpost

    AUTHOR alloy (31.6)

    TypeRigid

    Pedals

    alloy

    Grips

    AUTHOR kratton rubber

    Groupset
    Rear Derailleur

    SHIMANO Deore

    Crank

    PROWHEEL 32 teeth 165 / 170 mm cranks

    Shifters

    SHIMANO Deore (10)

    Cassette

    SHIMANO M4100-10 11-46 (10)

    Chain

    KMC X10

    Brakes

    TEKTRO Auriga disc hydraulic (6" rotors)

    TypeTektro Hydraulic Disc

    Wheels
    Rims

    AUTHOR Xenon TRC 27.5 32 holes

    Spokes

    black stainless steel 2.0 mm

    Front Hub

    QUANDO Disc 32 holes

    Rear Hub

    QUANDO Disc 32 holes

    Tires

    CST B-Trail aramid 27.5" × 2.25"

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