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With our Riprock Coaster 12, riding gets boiled down to its simplest element—fun. And to make sure of it, we designed the bike with tons of cool features that are easy for your little ones to use, like a coaster brake for simple stopping, wide 12x2.3" tir
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It's the perfect bike for your little ripper to start getting out on the trail with—we just wish that we had one when we were kids.

  • 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.
  • Steel coaster brake is a reliable, easy to use brake perfect for safe stops and awesome skids.
  • 12x2.3" Rhythm Lite tires deliver tons of traction, comfort, stability, and fun over all types of terrain.


    Frame: Specialized A1 Premium Aluminum

    Fork: Hi-Ten steel

    Seat Binder: Bolt-type, 28.6mm


    Stem: Die Cast Aluminum, 35mm length, 22.2 clamp diameter

    Handlebars: BMX, steel, 10-degree backsweep, 4-degree upsweep, 65mm rise, 470mm width, 22.2mm

    Grips: Specialized, slip-on

    Saddle: Specialized Kids'

    SeatPost: Steel, 22.2mm


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

    Crankset: Hi-Ten steel, 76mm

    Chainrings: Steel, 26T

    Bottom Bracket:Feimin FP-B701, 68MM


    Pedals: Nylon platform w/ reflectors


    Rims: 12" alloy, 16mm depth, 21mm internal width

    Front Hub: Bolt-on, 95mm spacing, loose ball bearings, 16h

    Rear Hub: Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 16T cog, 16h

    Spokes: Stainless, 14g

    Front Tire: Rhythm Lite, 30 TPI, wire bead, 12x2.3"

    Rear Tire: Rhythm Lite, 30 TPI, wire bead, 12x2.3"

    Inner Tubes: Schrader valve

    * Specifications are subject to change without notice