2017 Specialized Riprock Coaster 20

Aluminum frame coaster bike

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

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

Build
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
Components
CrankHi-Ten steel, OPC, 36T
ChainKMC Z510, single-speed, anti-drop, 1/2"x1/8"
BrakesV-brake, alloy, linear pull
Wheels
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