Riprock 12 Coaster
Part No.  

Riprock 12 Coaster

Part No.  
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Riprock 12 Coaster
Overview
Technical Specifications
Geometry
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" 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. 
  • The premium A1 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. 

Technical Specifications

BOTTOM BRACKET
Steel, loose ball bearings 14
SEAT BINDER
Bolt type, alloy, 28.6mm 3
FORK
Hi-Ten, 1" threaded steerer 2
INNER TUBES
Schrader valve, angled valve for easy access 10
CHAINRINGS
26T 13
SPOKES
Stainless, 14g 7
FRAME
Specialized A1 Premium Aluminum 1
REAR TIRE
Rhythm Lite, 12x2.3", 30 TPI, wire bead 9
STEM
Quill, alloy, 22.2mm clamp 15
HANDLEBARS
BMX, steel, 10-degree backsweep, 4-degree upsweep, 65mm rise, 470mm width, 22.2mm 16
GRIPS
Specialized, slip-on 17
CHAIN
KMC Z510, single-speed, anti-drop, 1/2"x1/8" 11
SADDLE
Specialized Kids 18
FRONT HUB
Steel, bolt-on, 95mm spacing, loose ball bearings, 16h 5
CRANKSET
Hi-Ten steel, OPC, 76mm 12
REAR HUB
Rear coaster brake, bolt on, 110mm spacing, loose ball bearings, 16T cog, 16h 6
PEDALS
Nylon platform w/ reflectors 20
SEATPOST
Steel, 25.4mm 19
RIMS
12", alloy single wall, 16h 4
FRONT TIRE
Rhythm Lite, 12x2.3", 30 TPI, wire bead 8

Geometry

Geometry Chart

Riprock - Geometry

6
  6
Crank Length 3in
Stem Length 35mm
Seatpost Length 190mm
Handlebar Width 470mm
Reach 222mm
Top Tube Length, Horizontal 350mm
Stack 274mm
Wheelbase 603mm
Chainstay Length 272mm
Front Center 331mm
BB Drop 11mm
Seat Tube Angle 71°
Head Tube Angle 70°
Head Tube Length 80mm
Seat Tube Length, BB Center to Top 170mm
Fork Rake 5mm
Standover Height 365mm
Trail 53mm