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    Sonic 27.52023 Author
    Recommended
    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.

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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
    Sonic 27.52023 Author
    Frame

    triple butted hydroformed alloy 6061 27.5"

    Color: Red

    Fork

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

    Travel: 80mm

    Spring Type: Air

    Stem

    AUTHOR alloy

    Handlebar

    AUTHOR Flat Top bar, 9°, 620 / 640 mm

    Saddle

    AUTHOR Champion (14") / Author Navigator (16")

    Seatpost

    AUTHOR alloy (31.6)

    Type: Rigid

    Pedals

    resin

    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 HD-M276 WS, disc hydraulic (6" rotors)

    Type: Tektro 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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