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    Riprock Coaster 202019 Specialized
    Recommended
    MSRP
    $270
    Where to Buy
    —
    $1

    At

    Category
    		General Youth
    Frame
    		Aluminum
    		Steel
    Wheels
    		Aluminum
    Wheel Size
    		20″
    		Coaster
    Drivetrain
    		Single-speed
    Brand Site

    specialized.com

    Summary
    		The Specialized Riprock Coaster 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)

    12 mph

    Riprock Coaster 20

    Highest gear

    (descending)

    Geometry
    Specs
    Riprock Coaster 202019 Specialized
    Frame

    Specialized A1 Premium Aluminum

    Fork

    Hi-Ten, 1-1/8" steerer

    Bottom Bracket

    Steel, loose ball bearings

    Handlebar

    BMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm

    Saddle

    Specialized Kids' Henge

    Seatpost

    Steel, 25.4mm

    Type: Rigid

    Pedals

    Nylon platform w/ reflectors

    Grips

    Specialized, slip-on

    Groupset
    Crank

    Hi-Ten steel, 114mm, 36T

    Cassette

    18T cog

    Chain

    KMC Z510, single-speed, anti-drop, 1/2"x1/8"

    Brakes

    V-brake w/ tool-less reach adjust brake lever

    Type: Coaster

    Wheels
    Rims

    20" alloy, 16mm depth, 21mm internal width

    Spokes

    Stainless, 14g

    Front Hub

    Steel, bolt-on, 100mm spacing, loose ball bearings, 36h

    Rear Hub

    Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 18T cog, 36h

    Tires

    Front: Rhythm Lite, 30 TPI, wire bead, 20x2.3", Rear: Rhythm Lite, 30 TPI, wire bead, 20x2.3"

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