Hotrock 20 6-Speed Boys
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Hotrock 20 6-Speed Boys

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Hotrock 20 6-Speed Boys
Technical Specifications
A lightweight, low-standover height frame with properly proportioned and easy-to-use controls makes the Hotrock perfect for a kid's first multi-speed bike. A 50mm of travel fork takes some bite out of the bumps.
  • 20" A1 Premium Aluminum frame with low standover height for care-free starts and stops with room for full-sized water bottle
  • 40mm-travel SR Suntour suspension fork with lightweight alloy lowers and pre-load adjust takes the edge off bumps for more control
  • Lightweight 32-spoke alloy rims are durable and provide a stable platform for learning
  • Specialized Roller Sport tires provide a knobby grip for dirt, but roll easily on pavement
  • Forged alloy crank arms give big kids more power, and a chainguide keeps pant legs clean on the way to school
  • Lightweight alloy A-Head stem for perfect positioning and easy, Allen-wrench adjustments
  • Alloy riserbar puts kids in a comfortable and confident position
  • Kid's Body Geometry saddle is durable and comfortable and fits young riders perfectly
  • Shimano Revo 6-speed twist shifters allow easy, safe gear changes without switching hand positions on the bars

Technical Specifications

CHAIN KMC Z-50, 1/2"" x 3/32""
BOTTOM BRACKET Water sealed, loose ball, 68mm x 128mm
CRANKSET Forged alloy arms, steel single ring, w/ dual roller chainguide
SHIFT LEVERS Shimano RS-31, 6-speed, Revo Twist
CASSETTE Shimano 6-speed freewheel, 14-28t
CHAINRINGS 36T, w/ chainguard
REAR DERAILLEUR Shimano FT-30, 6-speed, direct mount
SADDLE Specialized Kids Body Geometry, 1pc., 7mm rail w/ clamp
SEATPOST Alloy, 27.2mm, micro adjust
STEM Alloy Ahead, 4 bolt, 20º rise, 25.4mm clamp
HANDLEBARS Hi-Ten riser bar, 40mm rise, 10º backsweep, 6º upsweep, 25.4mm
GRIPS Specialized Revo type
FRONT HUB Forged alloy, loose ball, nutted axle, 32h
REAR HUB Forged alloy, freewheel type, 32h, nutted axle
INNER TUBES Schrader valve
SPOKES Stainless, 2.0mm (14g)
RIMS Alex C-1000, alloy single-wall, 32h
FRONT TIRE Specialized Roller Sport, 30 TPI, wire bead, 20x2.125""
REAR TIRE Specialized Roller Sport, 30 TPI, wire bead, 20x2.125""
FRONT BRAKE Die cast, alloy ""V"" brake, 1pc. pad
BRAKE LEVERS Tektro junior reduced-reach ""V"", alloy, linear pull compatible
REAR BRAKE Die cast, alloy ""V"" brake, 1pc. pad
PEDALS Composite platform w/ reflectors, loose ball, 9/16""
HEADSET 1-1/8"" threadless, loose ball
SEAT BINDER 34.9mm, alloy, extruded QR lever/collar
FORK SR Suntour (SF11-XCT-JR-20), 1pc. alloy lower, 25.4mm Hi-Ten stanchions, 1-1/8"" Hi-Ten steerer, coil/mcu w/ preload adj., 40mm travel
FRAME Specialized A1 Premium Aluminum, 20"" frame, front suspension geo w/ low standover TT design, formed DT/TT, forged dropouts w/ replaceable hanger


Geometry Chart

Hotrock - Geometry

Top Tube Length (Actual) 447mm
Top Tube Length (Horizontal) 464mm
Seat Tube Length, Center to Top 279mm
Standover Height 517mm
Wheel Base 913mm
Bottom Bracket Drop 4mm
Chainstay Length 390mm
Bottom Bracket Height 236.5mm
Seat Tube Angle 72°
Rake 40mm
Head Tube Angle 69°
Head Tube Length 100mm