Velopedia Bicycle Archive

2004 Specialized Hardrock Pro Disc

Original specifications: Mountain Mix drivetrain · 26" wheels · legacy reference geometry.

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At a glance

Model year
2004
Category
Mountain
Original MSRP
$610.00
Sizes
XS, S, M, L, XL
Colors
Charcoal Flame
Geometry
Legacy reference
In this record
27 specifications · archived image · original MSRP · geometry
Archive ID
92364
Model history 5 other years
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Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

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

Published sizes

XSSMLXL

Published colors

Charcoal Flame

Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized A1 aluminum
ForkMarzocchi MZ Comp, 100mm travel
Fork MaterialAluminum, single crown

Drivetrain

Component GroupMountain Mix
ShiftersShimano Alivio RapidFire Plus
Front DerailleurShimano Acera, bottom-pull/clamp-on 31.8mm
Rear DerailleurShimano Deore SGS
CranksetTruVativ X-Forge, 22/32/42 teeth
Bottom BracketTruvativ BB-02, 113mm spindle
BB Shell Width68mm English
Rear Cogs8-speed, 11 - 32 teeth
ChainShimano CN-IG31, 1/2 x 3/32"
PedalsSpecialized twin sided toe clip

Brakes

BrakesShimano BR-M475 Mechanical Disc brakes, Shimano Alivio levers

Cockpit & Contact Points

Headset1 1/8" threadless Specialized loose ball
HandlebarSpecialized aluminum
Handlebar ExtensionsNot included
StemAluminum threadless
SaddleSpecialized Sport ATB
SeatpostAluminum, 30.9mm diameter

Wheels & Tires

HubsJoy Tech aluminum, Q/R
RimsSun Rims Ditch Witch, 32-hole
SpokesStainless steel, 14ga. (2.0mm) straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.20" Specialized Enduro Sport
Wheel Size26" 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Historical reference geometry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 tube590 mm
Head-tube angle70.3°
Seat-tube angle73°
Chainstay / rear center424 mm
Wheelbase1069 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 build42/32/22T · 11–32T · 8-speed
Lowest0.69:1 Highest3.82:1 Total range555%

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
ChainMatching fit standard
Shimano CN-IG31, 1/2 x 3/32" Exact archived model
Front tireMatching fit standard
26x2.20" Specialized Enduro Sport Named tire and published size
Brake padsExact archived part
Shimano BR-M475 Mechanical Disc brakes Brake model identified — verify pad shape
More qualified parts (4)
SaddleQualified part search
Specialized Sport ATB Named archived component — verify exact version
Rear derailleurMatching configuration
Shimano Deore SGS Interpreted as Shimano Deore · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Alivio RapidFire Plus Interpreted as Shimano Alivio · 8-speed · mechanical Named component · published drivetrain speed — verify exact version
SeatpostMatching fit standard
30.9 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 20 checks based on 6 archived component groups Open checklistClose checklist
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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 Hardrock Pro Disc · Mountain bike, front suspension · Published sizes: XS, S, M, L, XL

Archived: Frame: TIG-welded · Fork: Marzocchi MZ Comp, 100mm travel · Aluminum, single crown

Archived: Fork: Marzocchi MZ Comp, 100mm travel

Archived: Group: Mountain Mix · Shifters: Shimano Alivio RapidFire Plus · Front derailleur: Shimano Acera, bottom-pull/clamp-on 31.8mm · Rear derailleur: Shimano Deore SGS · Crankset: TruVativ X-Forge, 22/32/42 teeth · Bottom bracket: Truvativ BB-02, 113mm spindle · Rear cogs: 8-speed, 11 - 32 teeth · Chain: Shimano CN-IG31, 1/2 x 3/32"

Archived: Brakes: Shimano BR-M475 Mechanical Disc brakes, Shimano Alivio levers

Archived: Wheel size: 26" wheels · Rims: Sun Rims Ditch Witch, 32-hole · Hubs: Joy Tech aluminum, Q/R · Front tire: 26 x 2.20" Specialized Enduro Sport

Controls and contact points

Archived: Headset: 1 1/8" threadless Specialized loose ball · Handlebar: Specialized aluminum · Stem: Aluminum threadless · Seatpost: Aluminum, 30.9mm diameter · Saddle: Specialized Sport ATB · Pedals: Specialized twin sided toe clip

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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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