Specialized Rockhopper Comp 29

2012 MountainCross-country Manufacturer page

Fork travel: 80 mm
Wheels: 29″
Drivetrain: 3 × 9 22–44t / 11–34t
Gear range: 618%
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

15.5"
17.5"
19"
21"
23"

The manufacturer did not publish rider heights for these sizes.

Components

15 of 23 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Specialized M4 29"" fully manipulated alloy frame, fully butted, disc only, externally relieved HT, forged dropouts w/ replaceable derailleur hanger Not identified

Suspension

1 part

Fork
- SR Suntour
DS-26-LO

Drivetrain

7 parts

Brakes

2 parts

Wheels and tires

5 parts

Front hub
- Formula
Rear hub

Forged alloy, mid flange, double-sealed, ground race, machined disc mount and flanges, cassette, QR, 36h Not identified
Rims
- Alex Rims
Spokes

Stainless, 2.0mm (14g) Not identified
Tires
- Specialized

Cockpit and contact points

7 parts

Grips
- Specialized
Handlebar

Flat bar, double butted alloy, 680mm (S) or 700mm (M, L, XL, XXL) wide,10º backsweep, 4º upsweep, 31.8mm Not identified
Headset

Integrated 1-1/8"" threadless, Campy-style, full cartridge bearings Not identified
Pedals

Alloy 1pc. body and cage, reflector kit, 9/16"" Not identified
Saddle
- Specialized
Seatpost

Alloy, 2 bolt head, 30.9mm, 12.5mm offset, micro adjust Not identified
Stem

3D forged 6061 alloy, 4 bolt clamp, 7º rise, 31.8mm Not identified

Sizes and geometry

5 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 19"

Table

Reach 430mm

Stack 637mm

Wheelbase 1114mm

Head angle 71.0°

Seat angle 73.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	388	412	430	451	465
Stackmm	613	623	637	651	670
Top tube lengthmm	576	603	625	650	670
Seat tube lengthmm	394	445	483	533	584
Head tube lengthmm	110	120	135	150	170
Head tube angle	71°	71°	71°	71°	71°
Seat tube angle	73°	73°	73°	73°	73°
Chainstay lengthmm	442	442	442	442	442
Wheelbasemm	1064	1091	1114	1139	1160
Front centermm	630	657	680	704	725
Bottom bracket dropmm	63.5	63.5	63.5	63.5	63.5
Bottom bracket heightmm	310	310	310	310	310
Standover heightmm	754	789	821	853	890
Fork rakemm	47	46	46	46	46
Trailmm	79	80	80	80	80
Stack/reach ratio	1.58	1.51	1.48	1.44	1.44
Suspension and parts
Crank lengthmm	170	175	175	175	175
Handlebar widthmm	680	700	700	700	700
Stem lengthmm	75	75	90	90	105
Seatpost lengthmm	350	350	400	400	400

Not published by the manufacturer: Front travel, Rear travel, Stem angle and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum

Suspension

Suspension configuration: Hardtail
Front travel: 80 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 22
Largest chainring: 44
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 18.8 in
Highest gear: 116.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

80 mm

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2012
Sample: 238 bicycles with this information
Coverage: 75.3% of the class

Lowest gear

18.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2012
Sample: 294 bicycles with this information
Coverage: 93.0% of the class

Highest gear

116.0 gear inches

This value is above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2012
Sample: 294 bicycles with this information
Coverage: 93.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 44.4 km/h

Total gear range 618%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.8–116.0 gear inches
Class reference (p10–p90): 16.8–116.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2012
Lowest gear: 294 bicycles with this information, 93.0% of the class
Highest gear: 294 bicycles with this information, 93.0% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2012 builds

Differences across 2012 builds
Specification	This bicycle Specialized Rockhopper Comp 29	Specialized Rockhopper	Specialized Rockhopper 29
Suspension
Front travel	80 mm	100 mm	80 mm
Drivetrain
Lowest gear	18.8 in	16.8 in	18.8 in
Highest gear	116.0 in	104.0 in	116.0 in
Other specifications
Wheel size	29″	26″	29″