Velopedia Bicycle Archive

2004 Specialized Hemi Junior Cruiser

Original specifications: N/A drivetrain · 24" wheels · geometry for 1 published size.

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At a glance

Model year
2004
Category
BMX
Sizes
Junior
Colors
Black
Geometry
Legacy reference
In this record
31 specifications · archived image · geometry
Archive ID
92337
Model history 1 other year
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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

Junior

Published colors

Black

Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized A1 aluminum monocoque
ForkSpecialized
Fork MaterialChromoly, unicrown crown
Rear ShockN/A

Drivetrain

Component GroupN/A
ShiftersN/A
Front DerailleurN/A
Rear DerailleurN/A
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 Tire24 x 1 1/8" Specialized AA-Main
Wheel Size24" 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Historical reference geometry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 tube495.3 mm
Head-tube angle71.5°
Seat-tube angle72°
Chainstay / rear center375.9 mm

Geometry source: Historical archive database — model-level reference geometry. The historical source provides one model-level geometry set and does not identify the corresponding frame size.

Parts & serviceability

Find replacement parts

3 top part searches
Front tireMatching fit standard
24x1 1/8" 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.

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Used-bike inspection

If you’re buying this bike used

Before any test ride: both brakes should stop the bike firmly and release cleanly; both wheels should run true and be securely attached; tires should have no casing damage; and the headset, handlebar, stem, cranks and pedals should have no looseness or play.

Follow the full used-bike inspection order →
  • FrameLook closely for dents and hairline cracks around welds, the head tube and bottom-bracket area. Cosmetic scratches matter less than a change in shape or a crack line.Inspect the frame and fork →
  • BrakesInspect pad condition, cable movement and the rim sidewalls or brake tracks for wear. A concave or heavily worn braking surface can mean the wheel also needs replacement.Inspect the brakes →
  • DrivetrainShift through the full range under light load, measure chain wear and inspect the cassette or freewheel teeth. Skipping or hesitation can indicate wear, poor adjustment or mismatched parts.Check drivetrain wear →
  • Wheels & tiresSpin both wheels and watch the rims for side-to-side or vertical movement. Check for dents, cracks, loose or uneven spokes and hub play, then inspect both tire casings for cuts, cracking or exposed threads.Check wheels and tires →
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 Cruiser · 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: 24" wheels · Rims: Sun Rims, 36-hole · Hubs: Front: Specialized aluminum, Rear: Specialized Flip Side · Front tire: 24 x 1 1/8" 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

Before and during the test ride

Follow the full used-bike inspection order →

Build relationships are limited to the archived manufacturer specifications. Confirm exact fit and standards before ordering parts or performing service.

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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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