Specialized Rockhopper

Name: Specialized Rockhopper
Brand: Specialized

2020 MountainCross-country Manufacturer page

Last known price: $550

Prices shown first for United States
Fork travel: 100 mm
Wheels: 29″
Drivetrain: 2 × 8 22–36t / 11–34t
Gear range: 506%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 158–167
SM 165–173
MD 169–180
LG 177–186
XL 183–191
XXL 186–194

Components

12 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

A1 alloy, Sport XC 29 Geometry, zero-stack head tube, internal cable routing, 135x9mm forged dropouts, chainstay-mounted disc brake, replaceable alloy derailleur hanger Not identified

Suspension

1 part

Fork
- SR Suntour XCT30

Drivetrain

7 parts

Bottom bracket

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

Stout 2x, forged alloy, 22/36T Not identified
Front derailleur
- Shimano Altus FD-M315 2 speeds
FD-M315
Rear derailleur
- Shimano Tourney TX RD-TX800 8 speeds
RD-TX800
Shifters
- Shimano ST-EF505
ST-EF505

Brakes

1 part

Brakes
- Shimano BR-MT200
BR-MT200

Wheels and tires

5 parts

Front hub
- Shimano
Rear hub
- Shimano
Rims

Alloy, disc only, double-wall, 25mm inner width Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Ground Control Sport, 29x2.3", Rear: Fast Trak Sport, 29x2.3" Not identified

Cockpit and contact points

6 parts

Grips
- Specialized
Handlebar

Stout XC, double-butted alloy, 8-degree backsweep, 6-degree upsweep, 10mm rise, 31.8mm Not identified
Pedals
- Specialized
Saddle
- Specialized
Seatpost

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

Stout 3D-forged alloy, 31.8mm, 6-degree rise Not identified

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 418mm

Stack 605mm

Wheelbase 1110mm

Head angle 69.8°

Seat angle 73.8°

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 Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	380	395	418	441	462	474
Stackmm	586	595	605	619	633	633
Top tube lengthmm	548	567	594	622	648	660
Seat tube lengthmm	370	400	430	470	520	560
Head tube lengthmm	95	95	95	110	125	125
Head tube angle	69.8°	69.8°	69.8°	69.8°	69.8°	69.8°
Seat tube angle	74°	73.9°	73.8°	73.7°	73.6°	73.6°
Chainstay lengthmm	440	440	440	440	440	440
Wheelbasemm	1065	1084	1110	1138	1164	1176
Front centermm	631	650	676	704	730	742
Bottom bracket dropmm	57.5	57.5	57.5	57.5	57.5	57.5
Bottom bracket heightmm	312.5	312.5	312.5	312.5	312.5	312.5
Standover heightmm	719	765	776	807	837	861
Fork rakemm	51	51	51	51	51	51
Trailmm	82	82	82	82	82	82
Stack/reach ratio	1.54	1.51	1.45	1.40	1.37	1.34
Suspension and parts
Crank lengthmm	165	170	170	175	175	175
Handlebar widthmm	720	720	750	750	750	750
Stem lengthmm	45	45	60	60	70	90
Seatpost lengthmm	350	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: 2
Smallest chainring: 22
Largest chainring: 36
Rear sprockets: 8
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 18.8 in
Highest gear: 94.9 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 2.3″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 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: 2020
Sample: 1,088 bicycles with this information
Coverage: 86.0% 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: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.6% of the class

Highest gear

94.9 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.6% of the class

Shifting

Mechanical

57 of 1,264 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,264 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.2 km/h
Highest gear: 36.4 km/h

Total gear range 506%

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: 18.8–94.9 gear inches
Class reference (p10–p90): 17.4–105.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2020
Lowest gear: 1057 bicycles with this information, 83.6% of the class
Highest gear: 1057 bicycles with this information, 83.6% 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 2020 builds

Differences across 2020 builds
Specification	This bicycle Specialized Rockhopper	Specialized Rockhopper 29	Specialized Rockhopper Comp 1X	Specialized Rockhopper Comp 29	Specialized Rockhopper Expert 1X	Specialized Rockhopper Sport 26
Suspension
Front travel	100 mm	100 mm	100 mm	100 mm	100 mm	80 mm
Drivetrain
Front chainrings	2	2	1	1	1	2
Smallest chainring	22	22	30	30	30	22
Largest chainring	36	36	30	30	30	36
Rear sprockets	8	8	9	9	10	9
Largest sprocket	34	34	42	42	42	36
Lowest gear	18.8 in	18.8 in	20.7 in	20.7 in	20.7 in	15.9 in
Highest gear	94.9 in	94.9 in	79.1 in	79.1 in	79.1 in	85.1 in
Brakes
Brake type	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Other specifications
Fork spring	Coil	Coil	Coil	Coil	Air	Coil
Wheel size	29″	29″	29″	29″	29″	26″