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
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Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized A1 aluminum
ForkAnswer Manitou Axel Elite, 100mm travel
Fork MaterialAluminum/magnesium, single crown
Rear ShockX-Fusion Coil Over w/rebound adj

Drivetrain

Component GroupMountain Mix
ShiftersShimano Deore RapidFire SL
Front DerailleurShimano Deore
Rear DerailleurShimano Deore LX SGS
CranksetSpecialized Forearm II Sport, 22/32/44 teeth
Bottom BracketShimano BB-UN25, 113mm spindle
BB Shell Width68mm English
Rear Cogs9-speed, 11 - 34 teeth
ChainShimano, 1/2 x 3/32"
PedalsShimano PD-M505 SPD

Brakes

BrakesShimano M420 brakes, Shimano Deore levers

Cockpit & Contact Points

Headset1 1/8" threadless Tange TG Aheadset
HandlebarSpecialized aluminum
Handlebar ExtensionsNot included
StemSpecialized aluminum
SaddleSpecialized Body Geometry Sport
SeatpostAluminum, 30.9mm diameter

Wheels & Tires

HubsFront: Specialized disc, Rear: Shimano FH-M475
RimsMavic X139, 32-hole
SpokesStainless steel, 15ga. (1.8mm) straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.00" Specialized Roll-X
Wheel Size26" wheels

Historical reference geometry

Geometry

Legacy reference · 6 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 tube549 mm
Head-tube angle71.5°
Seat-tube angle69°
Chainstay / rear center429 mm
Wheelbase1087 mm
Fork offset / rake38.1 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 build44/32/22T · 11–34T · 9-speed
Lowest0.65:1 Highest4.00:1 Total range618%

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
Front tireMatching fit standard
26x2.00" Specialized Roll-X Named tire and published size
Bottom bracketExact archived part
Shimano BB-UN25, 113mm spindle Exact archived model
PedalsExact archived part
Shimano PD-M505 SPD Exact archived model
More qualified parts (6)
SaddleQualified part search
Specialized Body Geometry Sport Named archived component — verify exact version
CranksetQualified part search
Specialized Forearm II Sport, 22/32/44 teeth Named archived component — verify exact version
Front derailleurMatching configuration
Shimano Deore Interpreted as Shimano Deore · 9-speed · mechanical Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Deore LX SGS Interpreted as Shimano Deore LX · 9-speed · mechanical Named component · published drivetrain speed — verify exact version
ShiftersQualified part search
Shimano Deore RapidFire SL Interpreted as Shimano Deore · 9-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 21 checks based on 6 archived component groups Open checklistClose checklist
0 of 21 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: 2003 Specialized Rockhopper FSR · Mountain bike, front & rear suspension

Archived: Frame: TIG-welded · Fork: Answer Manitou Axel Elite, 100mm travel · Aluminum/magnesium, single crown

Archived: Fork: Answer Manitou Axel Elite, 100mm travel · Rear shock: X-Fusion Coil Over w/rebound adj

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"

Archived: Brakes: Shimano M420 brakes, Shimano Deore levers

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

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