Specialized Roll Sport

Name: Specialized Roll Sport
Brand: Specialized

2017 UrbanComfort Manufacturer page

Suspension: Rigid
Wheels: 650b
Drivetrain: 3 × 7 28–48t / 14–34t
Gear range: 416%
Frame: Aluminum
Brakes: Mechanical disc

Rider height by size (cm)

Size guide

SM 158–170
MD 168–179
LG 176–187

Components

10 of 20 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

7 parts

Bottom bracket

BSA, square taper, cartridge bearings Not identified
Cassette
- Shimano 14–34t
Chain
- KMC
Crankset

Stout, forged alloy, 48/38/28T w/chainguard Not identified
Front derailleur
- Shimano Tourney
Rear derailleur
- Shimano Tourney
Shifters
- Shimano ST-EF51
ST-EF51

Brakes

1 part

Brakes
- Tektro

Wheels and tires

5 parts

Front hub
- Specialized
Rear hub
- Specialized
Rims

650b disc, double-wall aluminum, 15.5mm rim depth, 30mm 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, 60 TPI, BlackBelt protection, 650b x 2.3"" Not identified

Cockpit and contact points

5 parts

Handlebar
- Specialized
Pedals
- Specialized
Saddle

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

Dual-Bolt Diecast Head, AL6061 Post, Spring Suspension Not identified
Stem

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

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 352mm

Stack 619mm

Wheelbase 1097mm

Head angle 69.0°

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 Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	346	352	370
Stackmm	586	619	647
Top tube lengthmm	595	615	645
Seat tube lengthmm	375	440	480
Head tube lengthmm	155	185	215
Head tube angle	68°	69°	69°
Seat tube angle	67°	67°	67°
Chainstay lengthmm	480	480	480
Wheelbasemm	1089	1097	1126
Front centermm	618	626	654
Bottom bracket dropmm	70	70	70
Bottom bracket heightmm	285	285	285
Standover heightmm	702.2	764.3	806
Fork rakemm	55	55	55
Trailmm	84	77	77
Stack/reach ratio	1.69	1.76	1.75
Suspension and parts
Crank lengthmm	165	170	175
Handlebar widthmm	680	680	680
Stem lengthmm	60	60	60
Seatpost lengthmm	350	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: 3
Smallest chainring: 28
Largest chainring: 48
Rear sprockets: 7
Smallest sprocket: 14
Largest sprocket: 34
Lowest gear: 22.7 in
Highest gear: 94.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Mechanical disc

Fit and controls

Seatpost: suspension
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

22.7 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

Highest gear

94.3 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

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.7 km/h
Highest gear: 36.1 km/h

Total gear range 416%

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: 22.7–94.3 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 Sport	Specialized Roll	Specialized Roll City	Specialized Roll Elite	Specialized Roll Elite Low Entry	Specialized Roll Low Entry
Frame
Fork material	Steel	Steel	Aluminum	Aluminum	Aluminum	Steel
Drivetrain
Front chainrings	3	1	1	3	3	1
Smallest chainring	28	42	42	28	28	42
Largest chainring	48	42	42	48	48	42
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	22.7 in	34.0 in	28.9 in	22.7 in	22.7 in	34.0 in
Highest gear	94.3 in	82.5 in	105.0 in	120.0 in	120.0 in	82.5 in
Brakes
Brake type	Mechanical disc	Rim brake	Hydraulic disc	Mechanical disc	Mechanical disc	Rim brake
Cockpit
Seatpost	suspension	Rigid seatpost	Rigid seatpost	suspension	suspension	Rigid seatpost