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With our Riprock Coaster 12, riding gets boiled down to its simplest element—fun. 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.
Available in store
CloseWith 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" tires that increase stability and confidence, and tough components that will stand up to years of abuse. 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.
Crank Length - 3in
Stem Length - 35mm
Handlebar Width - 470mm
Seatpost Length - 190mm
Saddle Width - 110mm
Seat Tube Length, BB Center to Top - 170mm
Top Tube Length, Horizontal - 350mm
BB Drop - 11mm
Chainstay Length - 272mm
Seat Tube Angle - 71°
Head Tube Angle - 70°
Fork Rake - 5mm
Trail - 53mm
Front Center - 331mm
Wheelbase - 603mm
Standover Height - 365mm
Head Tube Length - 80mm
Reach - 222mm
Stack - 274mm
2022 Rider/Bike Weight Limits and Terrain Conditions
Riprock Coaster (12/16/20) Assembly and Setup Guide
Stem | Die Cast Aluminum, 35mm length, 22.2 clamp diameter |
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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 |
Seatpost Clamp | Bolt-type, 28.6mm |
Brakes | Coaster Brake |
Frame | Specialized A1 Premium Aluminum |
Fork | Hi-Ten steel |
Spokes | Stainless, 14g |
Rear Tire | Rhythm Lite, 30 TPI, wire bead, 12x2.3" |
Front Tire | Rhythm Lite, 30 TPI, wire bead, 12x2.3" |
Inner Tube | Schrader valve |
Rear Wheel Hub | Coaster brake, bolt-on, loose ball bearings, 110mm spacing, 16T cog, 16h |
Front Wheel Hub | Bolt-on, 95mm spacing, loose ball bearings, 16h |
Rims | 12" alloy, 16mm depth, 21mm internal width |
Chain | KMC Z510, single-speed, anti-drop, 1/2"x1/8" |
Crankset | Hi-Ten steel, 76mm |
Chainring | Steel, 26T |
Bottom Bracket | Feimin FP-B701, 68MM |
Pedals | Nylon platform w/ reflectors |