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    Grunge 122017 GT
    Recommended
    MSRP
    $159
    Where to Buy
    —
    $1

    At

    Category
    		General Youth
    Frame
    		Steel
    		Steel
    Wheels
    		Aluminum
    Wheel Size
    		12″
    		Coaster
    Drivetrain
    		Single-speed
    Brand Site
    Summary
    		The GT Grunge 12 is a 12″ steel frame general youth bike with coaster brakes.

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    Insights
    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)

    6 mph

    Grunge 12

    Highest gear

    (descending)

    Geometry
    Specs
    Grunge 122017 GT
    Frame

    12" GT Legit Fit Design, Hi-Ten Steel

    Fork

    GT Hi-Ten Steel, 1" Threaded Steerer

    Bottom Bracket

    Steel, Ball type

    Headset

    Steel, 1"

    Stem

    2-Bolt Alloy Top, Steel Quill

    Handlebar

    Steel 460mm width x 130mm rise

    Saddle

    GT 1-piece

    Seatpost

    Alloy

    Type: Rigid

    Pedals

    Jr. BMX design, resin

    Grips

    92mm closed end

    Groupset
    Crank

    Forged One-Piece Type, 89mm, Steel, 26T

    Cassette

    16T Coaster

    Chain

    1/2" x 1/8"

    Brakes

    (R) Coaster

    Type: Coaster

    Wheels
    Rims

    Alloy, 16 hole

    Spokes

    14G

    Front Hub

    Steel, 16 Hole (F) 3/8" Axle, (R) Coaster

    Rear Hub

    Steel, 16 Hole (F) 3/8" Axle, (R) Coaster

    Tires

    12 x 2.25"

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