Velopedia Bicycle Archive

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Compare published geometry, gearing and specifications for up to three bicycles.

1 of 2 bicycles

At a glance

Key differences

Supported differences are shown below. Data limitations are labeled separately.

  1. Data limitation

    No geometry is recorded for 2011 Specialized Rockhopper.

  2. Data limitation

    Only 2011 Specialized Rockhopper has enough published drivetrain data for gearing calculations.

Selected-size geometry

Geometry overlay

Frames share one scale and a bottom-bracket alignment. Size labels differ by brand; schematic drawing aids are identified below.

Complete specification tableShows different published values and gaps where a bicycle lacks data. Different wording reflects source language, not necessarily different components. Swipe for more columns.
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Specification
2025 Specialized Rockhopper
2011 Specialized Rockhopper
Overview
Model Year
2025
2011
Brand
Specialized
Specialized
Model
Rockhopper
Rockhopper
Bicycle Type
Mountain
Mountain bike, front suspension
Original MSRP
From $649.99
Not documented
Colors
Gloss Sage Green / Olive Green, Satin Cast Lilac / Sea Foam, Satin Slate / Cool Grey
Blk/Brn, Wht/Red
Sizes
XXS, XS, S, M, L, XL, XXL
13", 15.5", 17.5", 19", 21", 23"
Weight
13.87kg (30 lb, 9.2 oz)
—
Frameset
Frame Construction
Specialized A1 premium butted alloy, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger, stealth rack mounts, dropper post compatible
TIG-welded
Frame Material
Aluminum
Specialized M4 alloy
Fork
SR Suntour XCM 27.5/29, 30mm stanchions, Rx Tune, coil spring, QR, 80/90/100mm travel (size-specific), 42mm offset
SR Suntour SF11
Fork Material
—
Alloy Steerer, single crown
Drivetrain
Component Group
—
Mountain Mix
Shifters
Shimano Altus, RapidFire Plus, 9-speed
SRAM X.4
Front Derailleur
Shimano Altus FD-M2020 2-speed
Shimano Atlus, 34.9mm clamp
Rear Derailleur
Shimano Rear Derailleur, RD-M2000, Altus, 9-speed, Shadow Design
SRAM X.5
Crankset
Stout 2x, forged alloy
SR Suntour, 22/32/42 teeth
Bottom Bracket
Square-tapered, 73mm, internal bearings, 122.5mm spindle
Shimano BB ES25 Octalink
BB Shell Width
73 mm
—
Cassette
SunRace, 9-Speed, 11-36t
SRAM PG-830
Rear Cogs
—
8-speed, 11 - 32 teeth
Chain
KMC X9EPT, 9-speed, anti-corrosion coating w/ reusable Missing Link™
KMC X8
Pedals
Specialized Flat Pedal
Plastic platform
Brakes
Brakes
(F) Shimano BR-MT200, hydraulic disc, 180mm / (R) Shimano BR-MT200, hydraulic disc, 180mm
Avid BB5 mechanical disc brakes, Alloy levers
Cockpit & Contact Points
Headset
—
1 1/8" threadless
Handlebar
Alloy Mini Rise, 9-degree backsweep, 15mm rise, 31.8mm
Butted alloy risebar
Handlebar Extensions
—
Not included
Stem
Stout 3D-forged alloy, 31.8mm, 6-degree rise
3D Forged Alloy
Saddle
Bridge Sport, Steel rails, 155/143mm
Specialized Rockhopper XC
Seatpost
Alloy, 2-bolt clamp, 30.9mm
Two-bolt Alloy Micro-Adjust, 30.9mm diameter
Wheels & Tires
Hubs
(F) Formula 6-Bolt, disc, 100x9mm spacing, quick-release, 32H / (R) Formula SP-2125, 6-Bolt freehub, disc, 135x9mm spacing, quick-release
Front: Forged alloy hi/low flange, Rear: Forged alloy
Rims
Specialized alloy, disc only, double-wall, 25mm inner width, 32h
Alex RHD 26", 28-hole/32-hole
Spokes
Stainless, 14g
Stainless, 14ga. (2.0mm) butted
Front Tire
Fast Trak Sport
26 x 2.0" Specialized The Captain Sport
Rear Tire
Fast Trak Sport
—
Wheel Size
26; 27.5; 29
26" wheels
Geometry · choose a size for each bicycle
Geometry size
—
Reach
425 mm
—
Stack
616 mm
—
Effective top tube
608 mm
—
Head-tube angle
68.5°
—
Seat-tube angle
73.5°
—
Seat tube
400 mm
—
Head tube
95 mm
—
Chainstay / rear center
440 mm
—
Wheelbase
1128 mm
—
Bottom-bracket drop
62 mm
—
Bottom-bracket height
310 mm
—
Standover height
754 mm
—
Fork offset / rake
46 mm
—
Front center
696 mm
—
Trail
97 mm
—
Wheel size
29in
—

Historical specifications are presented as an archival reference. Components may have varied by market, size, or production run.

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