Velopedia Bicycle Archive
2003 Specialized Rockhopper FSR
Original specifications: Mountain Mix drivetrain · 26" wheels · legacy reference geometry.
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At a glance
- Model year
- 2003
- Category
- Mountain
- Original MSRP
- $1,040.00
- Geometry
- Legacy reference
- In this record
- 28 specifications · original MSRP · geometry
- Archive ID
- 30209
Frameset
| Frame Construction | TIG-welded |
|---|---|
| Frame Material | Specialized A1 aluminum |
| Fork | Answer Manitou Axel Elite, 100mm travel |
| Fork Material | Aluminum/magnesium, single crown |
| Rear Shock | X-Fusion Coil Over w/rebound adj |
Drivetrain
| Component Group | Mountain Mix |
|---|---|
| Shifters | Shimano Deore RapidFire SL |
| Front Derailleur | Shimano Deore |
| Rear Derailleur | Shimano Deore LX SGS |
| Crankset | Specialized Forearm II Sport, 22/32/44 teeth |
| Bottom Bracket | Shimano BB-UN25, 113mm spindle |
| BB Shell Width | 68mm English |
| Rear Cogs | 9-speed, 11 - 34 teeth |
| Chain | Shimano, 1/2 x 3/32" |
| Pedals | Shimano PD-M505 SPD |
Brakes
| Brakes | Shimano M420 brakes, Shimano Deore levers |
|---|
Cockpit & Contact Points
| Headset | 1 1/8" threadless Tange TG Aheadset |
|---|---|
| Handlebar | Specialized aluminum |
| Handlebar Extensions | Not included |
| Stem | Specialized aluminum |
| Saddle | Specialized Body Geometry Sport |
| Seatpost | Aluminum, 30.9mm diameter |
Wheels & Tires
| Hubs | Front: Specialized disc, Rear: Shimano FH-M475 |
|---|---|
| Rims | Mavic X139, 32-hole |
| Spokes | Stainless steel, 15ga. (1.8mm) straight gauge |
| Spoke Nipples | Brass nipples |
| Front Tire | 26 x 2.00" Specialized Roll-X |
| 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Historical reference geometry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 | 549 mm |
| Head-tube angle | 71.5° |
| Seat-tube angle | 69° |
| Chainstay / rear center | 429 mm |
| Wheelbase | 1087 mm |
| Fork offset / rake | 38.1 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 (6)
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Bike-specific inspection checklist 21 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: 2003 Specialized Rockhopper FSR · Mountain bike, front & rear suspension
Frame and fork
Inspect the frame and fork →Archived: Frame: TIG-welded · Fork: Answer Manitou Axel Elite, 100mm travel · Aluminum/magnesium, single crown
Suspension
Evaluate the suspension →Archived: Fork: Answer Manitou Axel Elite, 100mm travel · Rear shock: X-Fusion Coil Over w/rebound adj
Drivetrain
Check drivetrain wear →Archived: Group: Mountain Mix · Shifters: Shimano Deore RapidFire SL · Front derailleur: Shimano Deore · Rear derailleur: Shimano Deore LX SGS · Crankset: Specialized Forearm II Sport, 22/32/44 teeth · Bottom bracket: Shimano BB-UN25, 113mm spindle · Rear cogs: 9-speed, 11 - 34 teeth · Chain: Shimano, 1/2 x 3/32"
Brakes
Inspect the brakes →Archived: Brakes: Shimano M420 brakes, Shimano Deore levers
Wheels and tires
Check wheels and tires →Archived: Wheel size: 26" wheels · Rims: Mavic X139, 32-hole · Hubs: Front: Specialized disc, Rear: Shimano FH-M475 · Front tire: 26 x 2.00" Specialized Roll-X
Controls and contact points
Archived: Headset: 1 1/8" threadless Tange TG Aheadset · Handlebar: Specialized aluminum · Stem: Specialized aluminum · Seatpost: Aluminum, 30.9mm diameter · Saddle: Specialized Body Geometry Sport · Pedals: Shimano PD-M505 SPD
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.





