Velopedia Bicycle Archive

2002 Specialized Hotrock 24 Girls

Original specifications: Mountain Mix drivetrain · 24" wheels · legacy reference geometry.

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At a glance

Model year
2002
Category
Kids
Original MSRP
$275.00
Sizes
Girls 12.5"
Colors
Blue
Geometry
Legacy reference
In this record
26 specifications · archived image · original MSRP · geometry
Archive ID
37045
Model history 4 other years
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Manufacturer catalog

Published sizes and colors

1 size · 1 color

Manufacturer-published sizes and colors; availability and exact size/color pairings may vary by market or production run.

Published sizes

Girls 12.5"

Published colors

Blue

Frameset

Frame ConstructionTIG-welded
Frame MaterialChromoly
ForkSpecialized
Fork MaterialHi-tensile steel, unicrown crown

Drivetrain

Component GroupMountain Mix
ShiftersSRAM MRX
Front DerailleurShimano TY-32
Rear DerailleurShimano Tourney TY-22
CranksetSpecialized aluminum, 28/38/48 teeth
Bottom BracketSealed
Rear Cogs7-speed, 13 - 28 teeth
Chain1/2 x 3/32"
PedalsResin

Brakes

BrakesAluminum linear-pull brakes, aluminum linear-pull levers

Cockpit & Contact Points

Headset1 1/8" threadless sealed mechanism
HandlebarSteel
Handlebar ExtensionsNot included
StemSpecialized steel
SaddleSpecialized Mini Mountain
SeatpostAluminum, 27.2mm diameter

Wheels & Tires

HubsAluminum, nutted
RimsSpecialized aluminum, 36-hole
SpokesStainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire24 x 2.125" Specialized Roller
Wheel Size24" wheels

Historical reference geometry

Geometry

Legacy reference · 5 measurements

This historical geometry describes the model, but the original source does not identify its frame size. Use it as a period reference, not a size-specific fit comparison.

MeasurementLegacy reference
Top tube507 mm
Head-tube angle71°
Seat-tube angle74°
Chainstay / rear center420 mm
Wheelbase986 mm

The preserved source contains one model-level geometry set without an identified frame size.

Published drivetrain ratios

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

Published build48/38/28T · 13–28T · 7-speed
Lowest1.00:1 Highest3.69:1 Total range369%

The bar uses the same mechanical-ratio calculation as Compare. Wheel-dependent speed appears only when the record includes an exact ISO/ETRTO rear tire size; no tire size is assumed.

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
24x2.125" Specialized Roller Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
SaddleQualified part search
Specialized Mini Mountain Named archived component — verify exact version
More qualified parts (2)
Rear derailleurMatching configuration
Shimano Tourney TY-22 Interpreted as Shimano Tourney · 7-speed · mechanical Named component · published drivetrain speed — verify exact version
SeatpostMatching fit standard
27.2 mm seatpost Published diameter — verify length and setback

Searches use the archived manufacturer specification, not the components currently installed on a particular bicycle. Confirm the exact model, size and fit before ordering. As an Amazon Associate I earn from qualifying purchases. Velopedia may also earn from qualifying eBay purchases. Velopedia may also earn from qualifying retailer purchases. Commercial relationships do not influence Archive specifications or analysis.

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Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
0 of 19 checked Progress stays in this browser for this bike.

This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.

Archived: 2002 Specialized Hotrock 24 Girls · Juvenile mountain bike, non-suspension · Published sizes: Girls 12.5"

Archived: Frame: TIG-welded · Fork: Specialized · Hi-tensile steel, unicrown crown

Archived: Group: Mountain Mix · Shifters: SRAM MRX · Front derailleur: Shimano TY-32 · Rear derailleur: Shimano Tourney TY-22 · Crankset: Specialized aluminum, 28/38/48 teeth · Bottom bracket: Sealed · Rear cogs: 7-speed, 13 - 28 teeth · Chain: 1/2 x 3/32"

Archived: Brakes: Aluminum linear-pull brakes, aluminum linear-pull levers

Archived: Wheel size: 24" wheels · Rims: Specialized aluminum, 36-hole · Hubs: Aluminum, nutted · Front tire: 24 x 2.125" Specialized Roller

Controls and contact points

Archived: Headset: 1 1/8" threadless sealed mechanism · Handlebar: Steel · Stem: Specialized steel · Seatpost: Aluminum, 27.2mm diameter · Saddle: Specialized Mini Mountain · Pedals: Resin

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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.

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