Specialized Roll Low Entry

Name: Specialized Roll Low Entry
Brand: Specialized

2017 UrbanComfort Manufacturer page

Suspension: Rigid
Wheels: 650b
Drivetrain: 1 × 7 42t / 14–34t
Gear range: 243%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

10 of 19 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, Ground Control Positioning, formed tubes, disc mount, fender/rack mounts Not identified

Suspension

1 part

Fork

Roll Disc Steel, fender/rack mounts Not identified

Drivetrain

6 parts

Bottom bracket

BSA, square taper, cartridge bearings Not identified
Cassette
- Shimano 14–34t
Chain
- KMC
Crankset
- Race Face SHI 12 Chainring – 104 BCD 42t
Rear derailleur
- Shimano Tourney
Shifters
- Shimano Altus

Brakes

1 part

Brakes
- Tektro

Wheels and tires

5 parts

Front hub
- Specialized
Rear hub
- Specialized
Rims

650b rim brake, double-wall aluminum, 16mm rim depth, 30.4mm internal width, 32h Not identified
Spokes

Stainless, 14g Not identified
Tires

Front: Nimbus Sport, 60 TPI, BlackBelt protection, 650b x 2.3"", Rear: Nimbus Sport, 60TPI, 650bx2.3"", BlackBelt protection Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals
- Specialized
Saddle

Body Geometry The Cup, steel rails, 245mm Not identified
Seatpost

Alloy, 12mm offset, 2-bolt clamp, 27.2mm Not identified
Stem

Forged alloy, 17-degree rise, 31.8mm clamp Not identified

Sizes and geometry

2 sizes Open in the geometry plotter

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

Size SM

Table

Reach 346mm

Stack 586mm

Wheelbase 1089mm

Head angle 68.0°

Seat angle 67.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 650b wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 2 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	346	360
Stackmm	586	647
Top tube lengthmm	595	635
Seat tube lengthmm	370	480
Head tube lengthmm	155	215
Head tube angle	68°	69°
Seat tube angle	67°	67°
Chainstay lengthmm	480	480
Wheelbasemm	1089	1116
Front centermm	618	645
Bottom bracket dropmm	70	70
Bottom bracket heightmm	285	285
Standover heightmm	496.2	495.3
Fork rakemm	55	55
Trailmm	84	77
Stack/reach ratio	1.69	1.80
Suspension and parts
Crank lengthmm	165	170
Handlebar widthmm	680	680
Stem lengthmm	60	60
Seatpost lengthmm	350	350

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: Steel

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 34
Lowest gear: 34.0 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 2.3″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 650b

Technical analysis

2 measures

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

Lowest gear

34.0 gear inches

This value is within the central range for this class.

Cohort: Urban / Comfort Model year: 2017
Sample: 62 bicycles with this information
Coverage: 79.4% of the class

Highest gear

82.5 gear inches

This value is below the central range for this class.

Cohort: Urban / Comfort Model year: 2017
Sample: 62 bicycles with this information
Coverage: 79.4% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.0 km/h
Highest gear: 31.6 km/h

Total gear range 243%

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: 34.0–82.5 gear inches
Class reference (p10–p90): 21.4–126.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Comfort Model year: 2017
Lowest gear: 62 bicycles with this information, 79.4% of the class
Highest gear: 62 bicycles with this information, 79.4% 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

Differences across 2017 builds
Specification	This bicycle Specialized Roll Low Entry	Specialized Roll	Specialized Roll City	Specialized Roll Elite	Specialized Roll Elite Low Entry	Specialized Roll Sport
Frame
Fork material	Steel	Steel	Aluminum	Aluminum	Aluminum	Steel
Drivetrain
Front chainrings	1	1	1	3	3	3
Smallest chainring	42	42	42	28	28	28
Largest chainring	42	42	42	48	48	48
Rear sprockets	7	7	10	8	8	7
Smallest sprocket	14	14	11	11	11	14
Largest sprocket	34	34	40	34	34	34
Lowest gear	34.0 in	34.0 in	28.9 in	22.7 in	22.7 in	22.7 in
Highest gear	82.5 in	82.5 in	105.0 in	120.0 in	120.0 in	94.3 in
Brakes
Brake type	Rim brake	Rim brake	Hydraulic disc	Mechanical disc	Mechanical disc	Mechanical disc
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	suspension	suspension	suspension