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    Impulse2015 Author
    Recommended
    MSRP
    Where to Buy
    —
    $1

    At

    Category
    		Crosscountry
    Weight
    		32.0 lbs
    3.4
    Frame
    		Aluminum
    		RST GILA
    Wheels
    		Aluminum
    Wheel Size
    		27.5″
    		Tektro Hydraulic Disc
    		Altus
    Drivetrain
    		3 × 7
    Suspension
    		Hardtail
    Front Travel
    		100mm
    Brand Site

    en.author.eu

    Summary
    		The Author Impulse is a 27.5″ aluminum frame hardtail crosscountry bike with modest components.

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    Insights
    Ride Feel

    Based on frame geometry and build specs.

    Terrain
    easyextreme
    Handling
    nimblestable
    Impulse
    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)

    29 mph

    Impulse

    Highest gear

    (descending)

    Geometry
    Specs
    Impulse2015 Author
    Frame

    alloy 6061 27.5"

    Fork

    RST Gila 27.5 ML lock out (100 mm)

    Travel: 100mm

    Spring Type: Coil

    Stem

    AUTHOR alloy

    Handlebar

    AUTHOR 20 mm 660 / 680 mm

    Saddle

    AUTHOR Courier

    Seatpost

    AUTHOR alloy (31.6)

    Type: Rigid

    Pedals

    resin

    Grips

    AUTHOR high density foam

    Groupset
    Rear Derailleur

    SHIMANO Altus

    Front Derailleur

    SHIMANO M190 (34.9)

    Crank

    PROWHEEL 42-34-24 teeth 170 / 175 mm cranks

    Shifters

    SHIMANO Altus (21)

    Cassette

    SHIMANO HG20-7 12-32 (7)

    Chain

    KMC Z51

    Brakes

    TEKTRO Auriga disc hydraulic (6" rotors)

    Type: Tektro Hydraulic Disc

    Wheels
    Rims

    AUTHOR Radon 27.5 32 holes

    Spokes

    steel

    Front Hub

    QUANDO Disc 32 holes

    Rear Hub

    QUANDO Disc 32 holes

    Tires

    AUTHOR Rocket 27.5" x 2.10"

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