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
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Specialized A1 aluminum |
| Fork | Marzocchi MZ Comp, 100mm travel |
| Fork Material | Aluminum, single crown |
Drivetrain
| Component 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 |
| BB Shell Width | 68mm English |
| Rear Cogs | 8-speed, 11 - 32 teeth |
| Chain | Shimano CN-IG31, 1/2 x 3/32" |
| Pedals | Specialized twin sided toe clip |
Brakes
| Brakes | Shimano BR-M475 Mechanical Disc brakes, Shimano Alivio levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Specialized loose ball |
|---|---|
| Handlebar | Specialized aluminum |
| Handlebar Extensions | Not included |
| Stem | Aluminum threadless |
| Saddle | Specialized Sport ATB |
| Seatpost | Aluminum, 30.9mm diameter |
Wheels & Tires
| Hubs | Joy Tech aluminum, Q/R |
|---|---|
| Rims | Sun Rims Ditch Witch, 32-hole |
| Spokes | Stainless steel, 14ga. (2.0mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.20" Specialized Enduro Sport |
| Wheel Size | 26" wheels |
Historical reference geometry
Geometry
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.
| Measurement | Legacy reference |
|---|---|
| Top tube | 590 mm |
| Head-tube angle | 70.3° |
| Seat-tube angle | 73° |
| Chainstay / rear center | 424 mm |
| Wheelbase | 1069 mm |
The preserved source contains one model-level geometry set without an identified frame size.
Published drivetrain ratios
Gearing
Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.
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
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More qualified parts (4)
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Bike-specific inspection checklist 20 checks based on 6 archived component groups Open checklistClose checklist
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.
Identity and fit
Follow the full used-bike inspection order →Archived: 2004 Specialized Hardrock Pro Disc · Mountain bike, front suspension · Published sizes: XS, S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Marzocchi MZ Comp, 100mm travel · Aluminum, single crown
Suspension
Evaluate the suspension →Archived: Fork: Marzocchi MZ Comp, 100mm travel
Drivetrain
Check drivetrain wear →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"
Brakes
Inspect the brakes →Archived: Brakes: Shimano BR-M475 Mechanical Disc brakes, Shimano Alivio levers
Wheels and tires
Check wheels and tires →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
Before and during the test ride
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Current market
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





