Velopedia Bicycle Archive

2015 Specialized Rockhopper 29

Original specifications: Mountian mix drivetrain · 29 wheels.

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At a glance

Model year
2015
Category
Mountain
Original MSRP
$700.00
Sizes
S, M, L, XL, XXL
Colors
Gloss White/Black, Gloss Charcoal/Black/Hyper
In this record
24 specifications · original MSRP
Archive ID
1096004
Model history 3 other years
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Manufacturer catalog

Published sizes and colors

5 sizes · 2 colors

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

Published sizes

SMLXLXXL

Published colors

Gloss White/BlackGloss Charcoal/Black/Hyper

Frameset

Frame ConstructionSpecialized A1 Premium Aluminum, 29er geometry ORE downtube, butted tubesets, externally relieved headtube, forged dropouts, reinforced disc mount, replaceable alloy derailleur hanger
Frame MaterialAluminum
ForkCustom SR Suntour XCT 29, w/ custom Multi-Circuit Damping, alloy lowers, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, disc mount, 100mm travel
Fork MaterialSuspension

Drivetrain

Component GroupMountian mix
ShiftersShimano Altus Rapidfire Plus, SL type, w/ optical display
Front DerailleurShimano Altus, high mount, bottom swing, dual-pull
Rear DerailleurShimano Acera, 8-speed, SGS cage
CranksetSpecialized Stout, forged alloy, 8-speed, 42/32/22, square taper spindle
Bottom BracketSquare taper, cartridge bearings
Rear CogsSunrace, 8-speed, 11-34
ChainKMC X8, 8-speed, reusable Missing Link
PedalsComposite platform, w/ reflectors, 9/16"

Brakes

BrakesTektro Auriga, hydraulic disc, resin/metallic pads

Cockpit & Contact Points

Headset1-1/8" upper/lower, Zerostack 44, steel cups, loose ball bearings
HandlebarSpecialized flat, 6061 double butted alloy, 10-degree backsweep, 4-degree upsweep, 31.8mm
StemSpecialized 3D forged alloy, 4-bolt, 7-degree rise, anti-corrosion hardware
SaddleBody Geometry mountain, steel rails, 143mm
SeatpostAlloy, 2-bolt, micro-adjust, 12.5mm offset, 30.9mm, anti-corrosion hardware

Wheels & Tires

HubsSpecialized Hi Lo disc, alloy double-sealed, ground race, QR, 32h, Specialized Hi Lo disc, alloy, double-sealed, loose ball bearings, QR, 32h
Rims29" disc, alloy double-wall, pin joint, 25mm inner width, 36h
SpokesStainless, 14g, w/ brass nipple
Front TireSpecialized Ground Control Sport, 60TPI, wire bead, 29x2.1", Specialized Ground Control Sport, 60TPI, wire bead, 29x2.1"
Wheel Size29

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 · 11–34T · 8-speed
Lowest0.65:1 Highest3.82:1 Total range590%

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
KMC X8, 8-speed, reusable Missing Link Exact archived model
Cassette / rear cogsQualified part search
Sunrace, 8-speed, 11-34 Component family — verify exact version
Front tireMatching fit standard
Specialized Ground Control Sport, 60TPI, wire bead, 29x2.1", Specialized Ground Control Sport, 60TPI, wire bead, 29x2.1" Named tire and published size
More qualified parts (6)
CranksetQualified part search
Specialized Stout, forged alloy, 8-speed, 42/32/22, square taper spindle Named archived component — verify exact version
Front derailleurMatching configuration
Shimano Altus, high mount, bottom swing, dual-pull Interpreted as Shimano Altus · 8-speed Named component · published drivetrain speed — verify exact version
Rear derailleurMatching configuration
Shimano Acera, 8-speed, SGS cage Interpreted as Shimano Acera · 8-speed Component family — verify exact version
StemQualified part search
Specialized 3D forged alloy, 4-bolt, 7-degree rise, anti-corrosion hardware Named archived component — verify dimensions
SeatpostMatching fit standard
30.9 mm seatpost Published diameter — verify length and setback
HubsQualified part search
Specialized Hi Lo disc, alloy double-sealed, ground race, QR, 32h, Specialized Hi Lo disc, alloy, double-sealed, loose ball bearings, QR, 32h Named archived component — verify dimensions

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: 2015 Specialized Rockhopper 29 · Mountain Hardtail · Published sizes: S, M, L, XL, XXL

Archived: Frame: Specialized A1 Premium Aluminum, 29er geometry ORE downtube, butted tubesets, externally relieved headtube, forged dropouts, reinforced disc mount, replaceable alloy derailleur hanger · Fork: Custom SR Suntour XCT 29, w/ custom Multi-Circuit Damping, alloy lowers, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, disc mount, 100mm travel · Suspension

Archived: Fork: Custom SR Suntour XCT 29, w/ custom Multi-Circuit Damping, alloy lowers, coil/MCU spring, Hi-Ten 28mm stanchions, 1-1/8" steerer, hydraulic lockout w/ preload adjust, disc mount, 100mm travel

Archived: Group: Mountian mix · Shifters: Shimano Altus Rapidfire Plus, SL type, w/ optical display · Front derailleur: Shimano Altus, high mount, bottom swing, dual-pull · Rear derailleur: Shimano Acera, 8-speed, SGS cage · Crankset: Specialized Stout, forged alloy, 8-speed, 42/32/22, square taper spindle · Bottom bracket: Square taper, cartridge bearings · Rear cogs: Sunrace, 8-speed, 11-34 · Chain: KMC X8, 8-speed, reusable Missing Link

Archived: Brakes: Tektro Auriga, hydraulic disc, resin/metallic pads

Archived: Wheel size: 29 · Rims: 29" disc, alloy double-wall, pin joint, 25mm inner width, 36h · Hubs: Specialized Hi Lo disc, alloy double-sealed, ground race, QR, 32h, Specialized Hi Lo disc, alloy, double-sealed, loose ball bearings, QR, 32h · Front tire: Specialized Ground Control Sport, 60TPI, wire bead, 29x2.1", Specialized Ground Control Sport, 60TPI, wire bead, 29x2.1"

Controls and contact points

Archived: Headset: 1-1/8" upper/lower, Zerostack 44, steel cups, loose ball bearings · Handlebar: Specialized flat, 6061 double butted alloy, 10-degree backsweep, 4-degree upsweep, 31.8mm · Stem: Specialized 3D forged alloy, 4-bolt, 7-degree rise, anti-corrosion hardware · Seatpost: Alloy, 2-bolt, micro-adjust, 12.5mm offset, 30.9mm, anti-corrosion hardware · Saddle: Body Geometry mountain, steel rails, 143mm · Pedals: Composite platform, w/ reflectors, 9/16"

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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