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    Grunge 202017 GT
    Recommended
    MSRP
    $199
    Where to Buy
    —
    $1

    At

    Category
    		General Youth
    Frame
    		Aluminum
    		Steel
    Wheels
    		Aluminum
    Wheel Size
    		20″
    		Coaster
    Drivetrain
    		Single-speed
    Brand Site
    Summary
    		The GT Grunge 20 is a 20″ aluminum 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)

    10 mph

    Grunge 20

    Highest gear

    (descending)

    Geometry
    Specs
    Grunge 202017 GT
    Frame

    16" GT Legit Fit Design, Alloy

    Fork

    GT Hi-Ten Steel, 1" Threaded Steerer

    Bottom Bracket

    Steel, Ball type

    Headset

    Steel, 1"

    Stem

    2-Bolt Alloy Top, Steel Quill, 30mm

    Handlebar

    Steel 500mm 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, 28T

    Cassette

    16T Coaster

    Chain

    1/2" x 1/8"

    Brakes

    (R) Coaster

    Type: Coaster

    Wheels
    Rims

    Alloy, 20 hole

    Front Hub

    Steel, 20 Hole (F) 3/8" Axle, (R) Coaster

    Rear Hub

    Steel, 20 Hole (F) 3/8" Axle, (R) Coaster

    Tires

    16 x 1.95"

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