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Specialized Riprock Cstr 20

Specialized Riprock Cstr 20


Regular price $269.99 USD
Regular price $269.99 USD Sale price $269.99 USD
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Traction, control, confidence, and fun—the Riprock 20 Coaster is the perfect bike for your kid to start hitting the trails with. And with the simple coaster brake design, safety and fun aren't mutually exclusive anymore.

While there are many notable features that make the Riprock awesome, it's the 2.3-inch tires that provide a high degree of, well, shred-ability—delivering exceptional traction, control, and confidence for riding rough, off-road sections and city streets alike. And when you combine the big tires with sturdy 20-inch wheels, an easy-to-use coaster brake that all but eliminates the threat of the dreaded endo, and a single-speed setup, you have the perfect mountain bike to get your little Ripper out on the trail.

  • 20x2.3" Rhythm Lite tires deliver tons of traction, comfort, stability, and fun over all types of terrain. 
  • Steel coaster brake is a reliable, easy to use brake perfect for safe stops and awesome skids.
  • The A1 premium aluminum frame is lightweight and built to withstand the tough use by kids, while the geometry features an ultra-low standover that makes it easy for your little ones to fit on and grow with the bike.
  • Product Information

    Bottom Bracket

    Steel, loose ball bearings


    18T cog


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




    Hi-Ten steel, 114mm


    Hi-Ten, 1-1/8" steerer


    Specialized A1 Premium Aluminum

    Front Hub

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

    Front Tire

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


    Specialized, slip-on


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

    Inner Tubes

    Schrader valve


    Nylon platform w/ reflectors

    Rear Brake

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

    Rear Hub

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

    Rear Tire

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


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


    Specialized Kids' Henge

    Seat Binder

    Bolt-type, 28.6mm


    Steel, 25.4mm

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