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Specialized Riprock Coaster 20


Regular price $299.99 USD
Regular price $325.00 USD Sale price $299.99 USD Sale Sold out
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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.

  • 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.
  • 20x2.3" Rhythm Lite tires deliver tons of traction, comfort, stability, and fun over all types of terrain. 

Product Specifications

Bottom Bracket

Bottom Bracket, Feimin,fp-b701,steel,68mm Bb Width


Kmc Z510, Single-speed, Anti-drop, 1/2"x1/8"


Steel, 36t


Hi-ten Steel, 114mm


Hi-ten Steel


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


Stainless, 14g


Die Cast Aluminum, 37mm Length, 10 Degree, 22.2 Clamp Diameter

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