Specialized Rockhopper 29

Name: Specialized Rockhopper 29
Brand: Specialized

2017 MountainCross-country Manufacturer page

Fork travel: 100 mm
Wheels: 29″
Drivetrain: 3 × 8 22–44t / 11–34t
Gear range: 618%
Frame: Aluminum
Brakes: Mechanical disc

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

11 of 21 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 A1 Premium Aluminum, Trail 29 Geometry ORE down tube, butted tube sets, externally relieved head tube, forged dropouts, reinforced disc mount, replaceable alloy derailleur hanger Not identified

Suspension

1 part

Fork
- SR Suntour

Drivetrain

7 parts

Bottom bracket

Square taper, 73mm, internal bearings Not identified
Cassette
- SunRace 11–34t
Chain
- KMC X8 8 speeds
Crankset

Forged alloy, square taper spindle w/chainguard, 44/32/22T Not identified
Front derailleur
- Shimano Altus
Rear derailleur
- Shimano Acera
Shifters
- Shimano ST-EF510
ST-EF510

Brakes

1 part

Brakes
- Shimano BR-M375
BR-M375

Wheels and tires

5 parts

Front hub
- Shimano
Rear hub
- Shimano
Rims

Stout 29, alloy disc, double-wall, pinned joint, 20mm inner width, 32h Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Ground Control Sport, 29x2.1"", 60TPI, wire bead, Flak Jacket protection, Rear: Ground Control Sport, 29x2.1"", 60TPI, wire bead, Flak Jacket protection Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar

Stout, alloy, 8-degree backsweep, 6-degree upsweep, 10mm rise, 720mm width, 31.8mm Not identified
Pedals
- Specialized
Saddle

Body Geometry Henge Sport, steel rails, 143mm Not identified
Seatpost

Alloy, 12mm offset, 2-bolt clamp, 30.9mm Not identified
Stem

Stout, 3D-forged alloy, 31.8mm clamp, 6-degree rise 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 LG

Table

Reach 404mm

Stack 648mm

Wheelbase 1097mm

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	383	388	404	427	441
Stackmm	623	634	648	658	677
Top tube lengthmm	559	582	602	628	648
Seat tube lengthmm	394	444	483	530	560
Head tube lengthmm	105	95	110	120	140
Head tube angle	70.5°	71°	71°	71°	71°
Seat tube angle	74.25°	73°	73°	73°	73°
Chainstay lengthmm	450	450	450	450	450
Wheelbasemm	1073	1076	1097	1123	1144
Front centermm	632	635	656	682	702
Bottom bracket dropmm	69	69	69	69	69
Bottom bracket heightmm	305	305	305	305	305
Standover heightmm	749.6	797.2	827.4	865.8	894.6
Fork rakemm	46	46	46	46	46
Trailmm	83	80	80	80	80
Stack/reach ratio	1.63	1.63	1.60	1.54	1.54
Suspension and parts
Crank lengthmm	170	175	175	175	175
Handlebar widthmm	720	720	720	720	720
Stem lengthmm	60	70	70	80	90
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

Suspension

Suspension configuration: Hardtail
Front travel: 100 mm

Drivetrain

Derived by Bikelake

Front chainrings: 3
Smallest chainring: 22
Largest chainring: 44
Rear sprockets: 8
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: Mechanical disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.1″
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

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2017
Sample: 555 bicycles with this information
Coverage: 87.8% 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: 2017
Sample: 607 bicycles with this information
Coverage: 96.0% 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: 2017
Sample: 607 bicycles with this information
Coverage: 96.0% 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): 17.0–110.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2017
Lowest gear: 607 bicycles with this information, 96.0% of the class
Highest gear: 607 bicycles with this information, 96.0% 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 2017 builds
Specification	This bicycle Specialized Rockhopper 29	Specialized Rockhopper Comp 29	Specialized Rockhopper Expert 29	Specialized Rockhopper Pro 29	Specialized Rockhopper Sport 29
Suspension
Front travel	100 mm	100 mm	100 mm	80 mm	100 mm
Drivetrain
Front chainrings	3	2	2	2	3
Largest chainring	44	36	36	36	44
Rear sprockets	8	9	10	10	8
Largest sprocket	34	36	36	36	34
Lowest gear	18.8 in	17.7 in	17.7 in	17.7 in	18.8 in
Highest gear	116.0 in	94.9 in	94.9 in	94.9 in	116.0 in
Brakes
Brake type	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Fork spring	Coil	Air	Not informed	Air	Coil
Bottom bracket standard	Not informed	Not informed	BSA	BSA	Not informed

Changes since 2016
Specification	2016 Specialized Rockhopper 29	This bicycle Specialized Rockhopper 29
Frame
Fork material	Aluminum	Not informed
Suspension
Front travel	80 mm	100 mm
Drivetrain
Largest chainring	42	44
Highest gear	110.7 in	116.0 in
Brakes
Brake type	Hydraulic disc	Mechanical disc