Velopedia Bicycle Archive

2005 Specialized Rockhopper Pro Disc

Original specifications: Shimano Deore LX · 9-speed · mechanical rear derailleur · 26" wheels.

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At a glance

Model year
2005
Category
Mountain
Original MSRP
$1,100.00
Sizes
13", 15", 17", 19", 21"
Colors
Silver
In this record
26 specifications · archived image · original MSRP
Archive ID
10599
Model history 4 other years
Original buildA1 Premium Aluminum · Mountain Mix · 26" wheels

Manufacturer catalog

Published sizes and colors

5 sizes · 1 color

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

Published sizes

13"15"17"19"21"

Published colors

Silver

Frameset

Frame ConstructionTIG-welded
Frame MaterialA1 Premium Aluminum
ForkMarzocchi Drop Off Comp, 130mm
Fork MaterialAluminum/magnesium, single crown

Drivetrain

Component GroupMountain Mix
ShiftersShimano Deore
Front DerailleurShimano Deore, bottom-pull/clamp-on 34.9mm
Rear DerailleurShimano Deore LX
CranksetTruVativ Blaze, 22/32 teeth
Bottom BracketTruVativ, 118mm spindle
BB Shell Width73mm English
Rear Cogs9-speed, 11 - 34 teeth
ChainShimano CN-HG53, 1/2 x 3/32"
PedalsAluminum platform

Brakes

BrakesAvid BB-5 brakes, Avid FR-5 levers

Cockpit & Contact Points

Headset1 1/8" threadless sealed cartridge
HandlebarAluminum
StemTruVativ XR
SaddleSpecialized BG Sport MTB
SeatpostAluminum micro-adjust

Wheels & Tires

HubsFront: Specialized disc, Rear: Shimano M-475
RimsSun Rims SingleTrack, 36-hole
SpokesStainless steel, 15ga. (1.8mm) straight gauge
Spoke NipplesBrass nipples
Front Tire26 x 2.30" Specialized Enduro
Wheel Size26" wheels

Gearing

Chainring ÷ rear sprocket

Lower ratios provide more mechanical advantage for climbing. Higher ratios turn the rear wheel farther with each crank revolution.

RPM
Theoretical speed from published tire dimensions; see the evidence note below.
Published build32/22T · 11–34T · 9-speed
Lowest0.65:1 Highest2.91:1 Total range450%
Estimated speed Lowest gear4.6 mph Highest gear20.7 mph

Estimate uses the published front tire 26×2.3 as a proxy, corroborated by the wheel size. Rear tire size is not published or verified. Approximate circumference; actual rollout varies with tire and pressure. Theoretical, not a maximum achievable speed.

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: 2005 Specialized Rockhopper Pro Disc · Mountain bike, front suspension · Published sizes: 13", 15", 17", 19", 21"

Archived: Frame: TIG-welded · Fork: Marzocchi Drop Off Comp, 130mm · Aluminum/magnesium, single crown

Archived: Fork: Marzocchi Drop Off Comp, 130mm

Archived: Group: Mountain Mix · Shifters: Shimano Deore · Front derailleur: Shimano Deore, bottom-pull/clamp-on 34.9mm · Rear derailleur: Shimano Deore LX · Crankset: TruVativ Blaze, 22/32 teeth · Bottom bracket: TruVativ, 118mm spindle · Rear cogs: 9-speed, 11 - 34 teeth · Chain: Shimano CN-HG53, 1/2 x 3/32"

Archived: Brakes: Avid BB-5 brakes, Avid FR-5 levers

Archived: Wheel size: 26" wheels · Rims: Sun Rims SingleTrack, 36-hole · Hubs: Front: Specialized disc, Rear: Shimano M-475 · Front tire: 26 x 2.30" Specialized Enduro

Controls and contact points

Archived: Headset: 1 1/8" threadless sealed cartridge · Handlebar: Aluminum · Stem: TruVativ XR · Seatpost: Aluminum micro-adjust · Saddle: Specialized BG Sport MTB · Pedals: Aluminum platform

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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