Velopedia Bicycle Archive

2004 Specialized Hemi Junior

Original specifications: N/A drivetrain · 20" wheels · legacy reference geometry.

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At a glance

Model year
2004
Category
BMX
Sizes
Junior
Colors
Red
Geometry
Legacy reference
In this record
23 specifications · archived image · geometry
Archive ID
92336
Model history 1 other year
Campaign

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

Junior

Published colors

Red

Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized A1 aluminum monocoque
ForkSpecialized
Fork MaterialChromoly, unicrown crown

Drivetrain

CranksetTruVativ Racing XR, 41 teeth
Bottom BracketTruVativ cartridge
BB Shell WidthAmerican
Rear Cogs1-speed, 16 teeth
ChainKMC Z610HX, 1/2 X 3/32"
PedalsSpecialized aluminum platform

Brakes

BrakesTektro mini linear pull rear brakes, Tektro 317A short reach rear levers

Cockpit & Contact Points

Headset1 1/8" threadless Aheadset SX-1
HandlebarSpecialized 2 piece
Handlebar ExtensionsNot included
StemSpecialized aluminum
SaddleSpecialized Racing
SeatpostSpecialized aluminum, 22.2mm (7/8 inch) diameter

Wheels & Tires

HubsFront: Specialized aluminum, Rear: Specialized Flip Side
RimsSun Rims, 36-hole
SpokesUCP, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire20 x 1 3/8" Specialized AA-Main
Wheel Size20" wheels

Historical reference geometry

Geometry

Legacy reference · 4 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 tube469.9 mm
Head-tube angle73.5°
Seat-tube angle70°
Chainstay / rear center336.5 mm

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

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
20x1 3/8" Specialized AA-Main Named tire and published size
Brake padsMatching fit standard
Linear-pull brake pads Published brake type — verify pad mounting style
SaddleQualified part search
Specialized Racing Named archived component — verify exact version
More qualified parts (1)
SeatpostMatching fit standard
22.2 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. Commercial relationships do not influence Archive specifications or analysis.

Campaign
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: 2004 Specialized Hemi Junior · BMX · Published sizes: Junior

Archived: Frame: TIG-welded · Fork: Specialized · Chromoly, unicrown crown

Archived: Crankset: TruVativ Racing XR, 41 teeth · Bottom bracket: TruVativ cartridge · Rear cogs: 1-speed, 16 teeth · Chain: KMC Z610HX, 1/2 x 3/32"

Archived: Brakes: Tektro mini linear pull rear brakes, Tektro 317A short reach rear levers

Archived: Wheel size: 20" wheels · Rims: Sun Rims, 36-hole · Hubs: Front: Specialized aluminum, Rear: Specialized Flip Side · Front tire: 20 x 1 3/8" Specialized AA-Main

Controls and contact points

Archived: Headset: 1 1/8" threadless Aheadset SX-1 · Handlebar: Specialized 2 piece · Stem: Specialized aluminum · Seatpost: Specialized aluminum, 22.2mm (7/8 inch) diameter · Saddle: Specialized Racing · Pedals: Specialized aluminum platform

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Campaign

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

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