2017 Specialized Boy's Hotrock 20 Coaster

Aluminum frame coaster bike

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2017 Specialized Boy's Hotrock 20 Coaster
  • MSRP $250
  • Suspension Rigid
  • Frame Aluminum
  • Fork Steel
  • Wheels 20″ Aluminum
  • Brakes Coaster
Geometry
Build
FrameSpecialized A1 Premium Aluminum, 20" singlespeed coaster, formed top tube/down tube, forged horizontal dropouts
ForkHi-Ten steel, 1-1/8" threadless steerer, 3/8" axle dropouts
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', 7mm rails w/clamp
SeatpostSteel, 25.4mm
PedalsNylon platform w/reflectors
GripsSpecialized, Kraton, closed end, 105mm
Components
CrankHi-Ten steel, OPC, 36T
ChainKMC Z510, single-speed, anti-drop, 1/2"x1/8"
BrakesRear V-brake, alloy, linear pull w/rear coaster brake
Wheels
Rims20", alloy single wall, pin joint, 32h
SpokesStainless, 14g
Front HubSteel, nutted axle, 36h
Rear HubSteel, coaster brake, nutted axle, 36h
TiresSpecialized Rhythm Lite, 20x2.0", 30TPI, wire bead
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2017 Specialized Boy's Hotrock 20 Coaster