2017 Specialized Riprock Coaster 20

Aluminum frame coaster bike


2017 Specialized Riprock Coaster 20
  • MSRP $250
  • Suspension Rigid
  • Frame Aluminum
  • Wheels 20″ Aluminum

Oh snap! This frame was drawn from the actual bike geometry measurements. Roll over the table below to highlight frame dimensions.

FrameSpecialized A1 Premium Aluminum
ForkHiTen, 1-1/8" steerer
Bottom BracketSteel, loose ball bearings
StemAhead, alloy, 1-1/8" steerer, 22.2mm clamp, 37mm extension
HandlebarBMX, steel, 10-degree backsweep, 4-degree upsweep, 130mm rise, 560mm width, 22.2mm
SaddleSpecialized Kids'
SeatpostSteel, 25.4mm
PedalsNylon platform w/reflectors
GripsSpecialized, dual colored
CrankHi-Ten steel, OPC, 36T
ChainKMC Z510, single-speed, anti-drop, 1/2"x1/8"
BrakesV-brake, alloy, linear pull
Rims20", alloy single wall, 36h
SpokesStainless, 14g
Front HubSteel, 3/8" axle, 36h
Rear HubRear coaster brake, 3/8" Cr-Mo axle, loose ball bearings, 18T cog, 36h
TiresRhythm Lite, 20x2.3", 30TPI, wire bead, directional tread
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2017 Specialized Riprock Coaster 20