Velopedia Bicycle Archive

2011 Specialized Rockhopper Expert 29er

Original specifications: Mountain Mix drivetrain · 29" wheels.

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At a glance

Model year
2011
Category
Mountain
Sizes
15.5", 17.5", 19", 21", 23"
Colors
Blk/Gry
In this record
26 specifications · archived image
Archive ID
21986
Campaign

Historical catalog variants

Archived sizes and colors

5 item records

Item-level catalog entries recovered from Velopedia’s original bicycle archive. They document how this model was listed historically; they do not identify the frame size associated with legacy reference geometry or indicate current availability.

Published sizes

15.5"17.5"19"21"23"

Published colors

Blk/Gry
View 5 archived size/color combinations
SizeColor
15.5"Blk/Gry
17.5"Blk/Gry
19"Blk/Gry
21"Blk/Gry
23"Blk/Gry

Historical catalog evidence. Exact specifications and naming may vary by market, production run or manufacturer revision.

Frameset

Frame ConstructionTIG-welded
Frame MaterialSpecialized M4SL alloy
ForkRockShox Tora TK 29 SL
Fork MaterialAlloy Steerer, single crown

Drivetrain

Component GroupMountain Mix
ShiftersShimano SL-M590 Deore trigger
Front DerailleurShimano Alivio, 34.9mm bottom swing top pull
Rear DerailleurShimano Deore 9sp shadow long cage
CranksetShimano FC-M430-8, 22/32/44 teeth
Bottom BracketShimano BB ES25 Octalink
CassetteShimano HG30
Rear Cogs9-speed, 11 - 34 teeth
ChainKMC X9
PedalsAlloy

Brakes

BrakesShimano BR-M505 brakes, Shimano BR-M505 levers

Cockpit & Contact Points

Headset1 1/8" threadless Campy spec integrated sealed cartridge bearing
HandlebarButted alloy risebar
Handlebar ExtensionsNot included
Stem3D Forged Alloy
SaddleSpecialized Rockhopper XC
SeatpostTwo-bolt Alloy Micro-Adjust, 30.9mm diameter

Wheels & Tires

HubsFront: Forged alloy hi/low flange, Rear: Forged alloy mid flange
RimsAlex RHD 29", 32-hole/36-hole
SpokesStainless, 14ga. (2.0mm) butted
Front Tire29 x 2.0" Specialized The Captain Control
Wheel Size29" wheels

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
ChainExact archived part
KMC X9 Exact archived model
CassetteExact archived part
Shimano HG30 Exact archived model
Front tireMatching fit standard
29x2.0" Specialized The Captain Control Named tire and published size
More qualified parts (6)
Brake padsExact archived part
Shimano BR-M505 brakes Brake model identified — verify pad shape
Bottom bracketQualified part search
Shimano BB ES25 Octalink Named archived component — verify dimensions
SaddleQualified part search
Specialized Rockhopper XC Named archived component — verify exact version
CranksetExact archived part
Shimano FC-M430-8, 22/32/44 teeth Exact archived model
Front derailleurMatching configuration
Shimano Alivio, 34.9mm bottom swing top pull Interpreted as Shimano Alivio · 9-speed Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Deore 9sp shadow long cage Interpreted as Shimano Deore · 9-speed Named component · published drivetrain speed — verify exact version

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: 2011 Specialized Rockhopper Expert 29er · Mountain bike, front suspension · Published sizes: 15.5", 17.5", 19", 21", 23"

Archived: Frame: TIG-welded · Fork: RockShox Tora TK 29 SL · Alloy Steerer, single crown

Archived: Fork: RockShox Tora TK 29 SL

Archived: Group: Mountain Mix · Shifters: Shimano SL-M590 Deore trigger · Front derailleur: Shimano Alivio, 34.9mm bottom swing top pull · Rear derailleur: Shimano Deore 9sp shadow long cage · Crankset: Shimano FC-M430-8, 22/32/44 teeth · Bottom bracket: Shimano BB ES25 Octalink · Cassette: Shimano HG30 · Rear cogs: 9-speed, 11 - 34 teeth · Chain: KMC X9

Archived: Brakes: Shimano BR-M505 brakes, Shimano BR-M505 levers

Archived: Wheel size: 29" wheels · Rims: Alex RHD 29", 32-hole/36-hole · Hubs: Front: Forged alloy hi/low flange, Rear: Forged alloy mid flange · Front tire: 29 x 2.0" Specialized The Captain Control

Controls and contact points

Archived: Headset: 1 1/8" threadless Campy spec integrated sealed cartridge bearing · Handlebar: Butted alloy risebar · Stem: 3D Forged Alloy · Seatpost: Two-bolt Alloy Micro-Adjust, 30.9mm diameter · Saddle: Specialized Rockhopper XC · Pedals: Alloy

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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