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Hotrock 12”
Ages: 2 – 4 years
Also available in Purple
The perfect first-choice “real bike” frame for kids, the 12-inch Hotrock is lightweight and low to the ground, with a forward bottom bracket that makes it easier to transition to bigger bikes.
- The A1 Premium Aluminum blade fork and two-piece alloy handlebar manage those first turns with ease.
- 12-inch, 16-spoke alloy rims are durable enough to withstand any adventure.
- Specialized 12x2.125-inch tires are smooth-rolling and durable.
FRAME
Specialized A1 Premium Aluminum, Ground Control geometry, 12" frame w/ low standover TT, integrated kickstand mount, horizontal dropouts
FORK
A1 Premium Aluminum blade, 1" threaded Hi-Ten steerer
HEADSET
1" threaded
STEM
Alloy, quilled
HANDLEBARS
Alloy 2pc.
GRIPS
Kraton Kid's w/ flange
BRAKE
Coaster
CHAIN
KMC Z-410, 1/2" x 1/8"
CRANKSET
Heat treated Hi-Ten, 1pc., 76Lmm
CHAINRINGS
28t Disk Type Chainwheel
BOTTOM BRACKET
Heat treated Hi-Ten cups, loose ball for 1pc.
PEDALS
Composite platform, 1/2" w/ ball bearing
RIMS
16h alloy
FRONT HUB
Joy Tech, steel, 16h, nutted
REAR HUB
Joy Tech coaster, 16h, nutted
SPOKES
14g w/ brass nipple
FRONT TIRE
Specialized 12 x 2.125", 22TPI, wire bead
REAR TIRE
Specialized 12 x 2.125", 22 TPI, wire bead
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized Kid's, integrated 180mm x 22.2mm steel post
SEATPOST
Steel, 22.2mm, integrated w/ saddle
SEAT BINDER
Alloy single bolt
NOTES
Chain guard, cross bar pad, training wheels, owners manual
Specifications subject to change without notice.
Hotrock 16”

Ages: 4 – 6 years
- A1 Premium Aluminum frame has a low center of gravity for stability and horizontal dropouts for easy chain adjustments.
- The A1 Premium Aluminum blade fork and two-piece alloy handlebar manage those first turns with ease.
- 28-spoke alloy rims are tough enough for any curb-hopping adventure.
- Specialized 16x2.125-inch tires roll fast and hang tough.
FRAME
Specialized A1 Premium Aluminum, 16" frame w/ low standover TT design, integrated kickstand mount, horizontal dropouts
FORK
A1 Premium Aluminum blade, 1-1/8" threadless Hi-Ten steerer
HEADSET
1-1/8" threadless
STEM
Alloy A-Head
HANDLEBARS
Alloy 2pc.
GRIPS
Kraton w/ flange
BRAKE
Coaster
CHAIN
KMC Z-410, 1/2" x 1/8"
CRANKSET
Heat treated Hi-Ten, 1pc., 95mm
CHAINRINGS
28t stamped steel
BOTTOM BRACKET
Heat treated Hi-Ten cups, loose ball for 1pc.
PEDALS
Composite platform, 1/2" w/ ball bearing
RIMS
28h alloy
FRONT HUB
Joy Tech, steel, 28h, nutted
REAR HUB
Joy Tech coaster, 28h, nutted
SPOKES
14g w/ brass nipple
FRONT TIRE
Specialized, 16x2.125", 30TPI, wire bead
REAR TIRE
Specialized, 16x2.125", 30TPI, wire bead
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized 1pc., 7mm rail w/ clamp
SEATPOST
Steel, 22.2mm
SEAT BINDER
Alloy single bolt
NOTES
Chain guard, cross bar pad, training wheels, owners manual
Specifications subject to change without notice.
FRAME
Vita A1 Premium Aluminum, fully manipulated tubing, Designs for Women ergonomic design, integrated headset, hourglass speedstays
REAR SHOCK
N/A
FORK
Specialized Comp, A1 Premium Aluminum w/ Cr-Mo steerer, rack and fender mounts
HEADSET
Specialized Mindset, 1-1/8" integrated threadless, steel cage bearings, 40mm alloy cone with two 5mm alloy spacers
STEM
Specialized Comp-Set, 3D forged alloy, 4-bolt 31.8mm bar clamp, 4- position adjustable
HANDLEBARS
Specialized Event, A1 Premium Aluminum, 580mm width, 31.8mm
TAPE
Women's Body Geometry Comfort II, triple density gel
FRONT BRAKE
Forged 6061 alloy, 85mm linear pull, standard pads
REAR BRAKE
Forged 6061 alloy, 85mm linear pull, standard pads
BRAKE LEVERS
FRONT DERAILLEUR
Shimano Nexave
REAR DERAILLEUR
Shimano Sora, long cage
SHIFT LEVERS
Shimano EZ Fire
CASSETTE
Shimano Sora, 8-Speed 12-25t
CHAIN
KMC Z-51, 8-speed
CRANKSET
Sugino Triple w/ chainguard
CHAINRINGS
48 x 38 x 28t
BOTTOM BRACKET
Sealed cartridge, square taper, 68mm x 113mm
PEDALS
Silver cage, black body, w/ toe clip and strap
RIMS
Alex S500, sleeve joint, CNC sidewalls, 32h
FRONT HUB
Specialized sealed, 32 hole, QR
REAR HUB
Specialized sealed, 32h, cassette, QR
SPOKES
Stainless 14g
FRONT TIRE
Specialized All Condition Sport, 700x28c, 60TPI w/Flak jacket
REAR TIRE
Specialized All Condition Sport, 700x28c, 60TPI w/Flak jacket
INNER TUBES
Specialized standard presta tube
SADDLE
Body Geometry Women's Sonoma, 155mm width
SEATPOST
Alloy 2-bolt, 27.2mm
SEAT BINDER
Specialized alloy 31.8mm
NOTES
Chain stay protector, chain catcher, clips and straps, derailleur hanger, clear coat, owners manual
Specifications subject to change without notice.
Useful Links www.D4WGear.com Manuals/Tech Bulletins
FRAME
Myka A1 Premium Aluminum, Designs for Women geometry, low standover TT, tig-welded, externally relieved HT, forged dropouts w/ replaceable 98954020 alloy hanger
REAR SHOCK
FORK
Suntour XCT-V2-D-MLO, 80mm/100mm travel, Disc only 1pc alloy lower, 28mm Hiten stanchion and 1-1/8" steer, Mechanical LO, 13/15" = Soft 17/19" = Standard Coil/Mcu spring w/ preload adj., spring type mini boot seals, custom paint and graphic
HEADSET
Specialized 1-1/8" threadless
STEM
Specialized 3D forged alloy, 31.8mm, 10 degree rise
HANDLEBARS
Specialized alloy 31.8mm XC rise, 620mm wide, 8 degree back, 8 degree up sweep
GRIPS
Women's MTB, dual density Kraton
FRONT BRAKE
Avid BB5, mechanical disc, caliper/adapter w/ 160mm G2 Clean Sweep rotor
REAR BRAKE
Avid BB5, mechanical disc, caliper/adapter w/ 160mm G2 Clean Sweep rotor
BRAKE LEVERS
Alloy two finger
FRONT DERAILLEUR
Shimano Altus, top swing, 34.9mm clamp
REAR DERAILLEUR
SRAM x4
SHIFT LEVERS
SRAM X-4, 8-speed trigger
CASSETTE
SRAM PG-830, 8-speed, 11-32t
CHAIN
8-Speed w/ reusable missing link #CL571R (110Links)
CRANKSET
SR-Suntour 8-speed, Octalink spline, 13": 165mm, 15-17": 170mm, 19": 175mm
CHAINRINGS
42S x 32S x 22S
BOTTOM BRACKET
Shimano BB-ES25, Octalink spline, cartridge bearing
PEDALS
9/16", toe clip compatible, composite body, steel cage, boron axle, CPSC reflectors (no logo)
RIMS
Specialized/Alex RHD 26, double wall, CNC sidewalls, 28h
FRONT HUB
Specialized, forged alloy, 32h, polished races, steel QR
REAR HUB
Specialized forged alloy, 32h, polished races, steel QR
SPOKES
15g Stainless w/ Brass Nipples, 3 cross Front and Rear
FRONT TIRE
Specialized Fast Trak LK Sport, 26x2.0", 60TPI, wire bead
REAR TIRE
"Fast-Track LK Sport", 2.0", wire bead, 60tpi, 3 hotpatch
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized XC Women's, Aramid sides, front and rear bumpers, 155mm width
SEATPOST
Specialized alloy two bolt micro adjust head, 30.9mm
SEAT BINDER
Extruded lever and collar, nylon/glass fiber washer
NOTES
Chain stay protector, reflectors, clear coat, owners manual
Specifications subject to change without notice.
FRAME
Specialized A1 Premium Aluminum, fully manipulated tubing, compact design, integrated headset, hourglass speedstays
REAR SHOCK
N/A
FORK
Specialized Comp, A1 Premium Aluminum w/ Cr-Mo steerer, rack and fender mounts
HEADSET
Specialized Mindset, 1-1/8" integrated threadless, steel cage bearings, 20mm alloy cone with two 5mm alloy spacers
STEM
Specialized Comp-Set, 3D forged alloy, 4-bolt 31.8mm bar clamp, 4- position adjustable
HANDLEBARS
Specialized Event, A1 Premium Aluminum, 580mm width, 31.8mm
GRIPS
Body Geometry Comfort II, triple density gel
FRONT BRAKE
Forged 6061 alloy, 85mm linear pull, standard pads
REAR BRAKE
Forged 6061 alloy, 85mm linear pull, standard pads
BRAKE LEVERS
Shimano EF-50, EZ Fire, integrated w/ shift lever
FRONT DERAILLEUR
Shimano Nexave
REAR DERAILLEUR
Shimano Sora, long cage
SHIFT LEVERS
Shimano EF-50, EZ Fire
CASSETTE
Shimano Sora, 8-Speed 12-25t
CHAIN
KMC Z-51, 8-speed
CRANKSET
Sugino Triple
CHAINRINGS
48 x 38 x 28t
BOTTOM BRACKET
Sealed cartridge, square taper, 68mm x 113mm
PEDALS
Silver cage, black body, w/ toe clip and strap
RIMS
Alex S500, sleeve joint, CNC sidewalls, 32h
FRONT HUB
Specialized sealed, 32h, QR
REAR HUB
Specialized forged alloy, 32h, double sealed bearings, cassette, QR
SPOKES
Stainless 14g
FRONT TIRE
Specialized All Condition Sport, 700x28c, 60TPI w/ Flak Jacket
REAR TIRE
Specialized All Condition Sport, 700x28c, 60TPI w/ Flak Jacket
INNER TUBES
Specialized standard presta tube
SADDLE
Body Geometry Sonoma, 155mm width
SEATPOST
Alloy 2-bolt, 27.2mm
SEAT BINDER
Specialized alloy 31.8mm
NOTES
Chain stay protector, chain catcher, clips and straps, derailleur hanger, clear coat, owners manual
Specifications subject to change without notice.
FRAME
Specialized A1 Premium Aluminum, fully manipulated tubing, semi-compact Freeroad design, rack and fender fittings
REAR SHOCK
N/A
FORK
Specialized FACT carbon, carbon legs, aluminum Steerer, Speed Zertz inserts, rack and fender fittings
HEADSET
Specialized Mindset, 1-1/8" integrated threadless, steel cage bearings, 20mm alloy cone w/ 10mm alloy spacer
STEM
Specialized Comp-Set, 3D forged alloy, 4-bolt 31.8mm bar clamp, 4- position adjustable
HANDLEBARS
Specialized Comp, 6061 alloy, short drop, ergonomic shaping, 31.8mm
TAPE
Body Geometry Bar Phat, cork ribbon w/ 2.5mm gel padding
FRONT BRAKE
Tektro high profile linear spring cantilever, alloy, cartridge pads
REAR BRAKE
Tektro low profile linear spring cantilever, alloy, cartridge pads
BRAKE LEVERS
Shimano Tiagra, 9-speed STI, flight deck compatible
FRONT DERAILLEUR
Shimano Tiagra, 31.8mm clamp, bottom pull
REAR DERAILLEUR
New Shimano Deore LX, long cage
SHIFT LEVERS
Shimano Tiagra, 9-speed STI
CASSETTE
Shimano HG50, 9-speed, 11-32t
CHAIN
Shimano HG73, 9-speed
CRANKSET
FSA Tempo Triple
CHAINRINGS
50 x 39 x 30t
BOTTOM BRACKET
Sealed cartridge, square taper, 68mm x 103mm
PEDALS
Silver cage, black body, w/ toe clip and strap
RIMS
Alex ACE-19 double wall rim, CNC sidewalls, spoke eyelets, 32h
FRONT HUB
Specialized forged alloy, 32h, sealed bearings, QR
REAR HUB
Specialized forged alloy, 32h, sealed ball bearings, cassette, QR
SPOKES
Stainless 14g
FRONT TIRE
Specialized Borough Sport CX, 700x32c, wire bead, 60TPI
REAR TIRE
Specialized Borough Sport CX, 700x32c, wire bead, 60TPI
INNER TUBES
Specialized standard presta tube
SADDLE
Specialized Comp Road, full padding
SEATPOST
Specialized carbon wrapped, two-bolt clamp, 27.2mm
SEAT BINDER
Specialized alloy 31.8mm
NOTES
Chain stay protector, chain catcher, derailleur hanger, clear coat, owners manual
Specifications subject to change without notice.
Useful Links Manuals/Tech Bulletins
Hotrock 20”

Ages: 6 – 9 years
- A 50mm-travel suspension fork is just enough to take the edge off bumps for total control.
- The alloy A-Head stem offers perfect positioning and easy Allen-wrench adjustments.
- Forged crankarms with a chain guide keep things in place when the going gets rough.
- Specialized Roller tires offer knobby grip for trail riding and roll easily on smoother surfaces.
FRAME
Specialized A1 Premium Aluminum, 20" frame w/ low standover TT design, formed DT, integrated kickstand, forged dropouts w/ replaceable 98954020 hanger
FORK
RST Capa C20, 50mm, forged alloy crown, 1pc. alloy lower, coil spring, spring seal
HEADSET
1-1/8" threadless
STEM
Alloy A-Head
HANDLEBARS
Kid's Riserbar, Hi-Ten, 600mm wide, 40mm rise
GRIPS
Kraton, Revo type
BRAKE
Pro Max, alloy linear pull w/ linear spring
CHAIN
KMC Z50, 1/2" x 3/32"
CRANKSET
Sugino, forged alloy arms, chain guide, 127mm
CHAINRINGS
36t w/ outer guard
BOTTOM BRACKET
VP, water sealed, 68mm x 128mm
PEDALS
Composite platform, loose ball, 9/16"
RIMS
Alex C-1000, 32h, alloy single wall
FRONT HUB
Alloy, nutted 3/8" axle, 32h, nutted
REAR HUB
Forged alloy, 32h, nutted
SPOKES
14g w/ brass nipple
FRONT TIRE
Specialized Roller, 20x2.125", 30TPI, wire bead
REAR TIRE
Specialized Roller, 20 x 2.125", 30TPI, wire bead
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized 1pc., 7mm rail w/ clamp
SEATPOST
Alloy, 27.2mm, microadjust
SEAT BINDER
Alloy collar w/ QR
NOTES
Chain stay protector, reflectors, clear coat, owners manual
Specifications subject to change without notice.
Hotrock 24”

Ages: 8 – 12 years
- This kid’s ATB alloy frame features tons of standover height and a formed down tube with room for a full-sized waterbottle.
- A 50mm-travel suspension fork is just enough to smooth out rough rides.
- The alloy A-Head stem offers perfect positioning and easy Allen-wrench adjustments.
- The triple-chainring crankset has forged alloy arms for superior power transfer and a chain guard to keep things in place.
- Specialized Roller tires provide knobby grip for trail riding and roll easily on smoother surfaces.
- The kid's saddle is designed to fit younger riders perfectly.
FRAME
Specialized A1 Premium Aluminum, 24" frame w/ low standover TT, formed DT, forged dropouts w/ replaceable 98954020 hanger
FORK
RST Capa C24, 50mm, forged alloy crown, 1pc. alloy lower, soft coil spring, spring seal
HEADSET
1-1/8" threadless
STEM
Alloy A-Head, melt forged, 60mm, 15 degree rise
HANDLEBARS
Kid's Riserbar, Hi-Ten, 600mm wide, 40mm rise
GRIPS
Kraton, Revo type
BRAKE
Alloy linear pull
CHAIN
KMC Z-50, 1/2" x 3/32"
CRANKSET
Sugino 21-speed, forged alloy arms, chain guard, 152mm
CHAINRINGS
42 x 34 x 24t
BOTTOM BRACKET
VP, water sealed, 68mm x 128mm
PEDALS
Composite platform, 9/16"
RIMS
Alex C-1000, alloy single wall, 32h
FRONT HUB
Forged alloy, 32h with 3/8" axle, nutted
REAR HUB
Forged alloy, 32h with 3/8" axle, nutted
SPOKES
14g w/ brass nipple
FRONT TIRE
Specialized Roller, 20 x 2.125", 30TPI, wire bead
REAR TIRE
Specialized Roller, 20 x 2.125", 30TPI, wire bead
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized 1pc., 7mm rail w/ clamp
SEATPOST
Alloy, 27.2mm, microadjust
SEAT BINDER
Alloy collar w/ QR
NOTES
Chain stay protector, reflectors, clear coat, owners manual
Specifications subject to change without notice.
FRAME
Specialized A1 Premium Aluminum, 24" frame w/ low standover TT, formed DT, forged dropouts w/ replaceable 98954020 hanger
FORK
RST Capa C24, 50mm, forged alloy crown, 1pc. alloy lower, soft coil spring, spring seal
HEADSET
1-1/8" threadless
STEM
Alloy A-Head, melt forged, 60mm, 15 degree rise
HANDLEBARS
Kid's Riserbar, Hi-Ten, 600mm wide, 40mm rise
GRIPS
Kraton, Revo type
BRAKE
Alloy linear pull
CHAIN
KMC Z-50, 1/2" x 3/32"
CRANKSET
Sugino 21-speed, forged alloy arms, chain guard, 152mm
CHAINRINGS
42 x 34 x 24t
BOTTOM BRACKET
VP, water sealed, 68mm x 128mm
PEDALS
Composite platform, 9/16"
RIMS
Alex C-1000, alloy single wall, 32h
FRONT HUB
Forged alloy, 32h with 3/8" axle, nutted
REAR HUB
Forged alloy, 32h with 3/8" axle, nutted
SPOKES
14g w/ brass nipple
FRONT TIRE
Specialized Roller, 20 x 2.125", 30TPI, wire bead
REAR TIRE
Specialized Roller, 20 x 2.125", 30TPI, wire bead
INNER TUBES
Specialized schraeder valve
SADDLE
Specialized 1pc., 7mm rail w/ clamp
SEATPOST
Alloy, 27.2mm, microadjust
SEAT BINDER
Alloy collar w/ QR
NOTES
Chain stay protector, reflectors, clear coat, owners manual
Specifications subject to change without notice.
Hotrock A1 FS 24”

Ages: 8 – 12 years
- The beautifully formed A1 FS frame is made for kids, but built like a high-end adult XC frame, with butted tubes, forged dropouts, a replaceable derailleur hanger and disc-brake mounts.
- A 51mm-travel fork features coil springs for maximum plushness, with a mechanical lockout and external preload adjustment for the ultimate in fine-tuning.
- The alloy A-head stem with 15-degree rise mates perfectly with the kid’s riserbar handlebar, putting the rider in the best position for maximum control.
- The replaceable Junior crankset provides consistently quick, smooth shifts.
- 32-spoke SBC HRXC alloy rims are double-walled for maximum longevity.
- Knobby Fast Track tires hug the turns on any trail.
- The Body Geometry Kid’s Rival saddle offers a scientifically proven fit reminiscent of our BG adult line.
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