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2018 Specialized

Roll Sport

A 650b aluminum frame comfort bike with mid-range components and tektro mechanical disc brakes.
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Manufacturer Price

$610
FrameAluminum
SuspensionRigid
ForkSteel
Wheels650b Aluminum
Drivetrain3 × 7
GroupsetTourney
BrakesTektro Mechanical Disc
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Insights
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

28 mph

Roll Sport

29 mph

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Highest gear

(descending)

Sizing
SM

5'2" – 5'8"

MD

5'6" – 5'11"

LG

5'10" – 6'3"

XL

6'1" – 6'7"

🐐 Estimated

Rider Fit Notes

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Geometry
Specs
Build
Frame

Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, post mount disc, fender/rack mounts

BB StandardBSA, Threaded

Fork

Steel, IS mount disc, fender/rack mounts

Bottom Bracket

BSA, square taper, cartridge bearings

Stem

Forged alloy, 17-degree rise, 31.8mm clamp

Handlebar

Specialized Roll, 6061 alloy, 15-degree backsweep, 125mm rise, 31.8mm

Saddle

Body Geometry The Cup, 6-degree rise, steel rails, 245mm

Seatpost

Spring suspension, alloy, 27.2mm, 2-bolt clamp

TypeSuspension

Pedals

Specialized City, platform

Grips

Specialized Body Geometry Contour, lock-on

Groupset
Rear Derailleur

Shimano Tourney, 7-Speed

Front Derailleur

Shimano Tourney, top swing, 31.8mm clamp

Crank

Forged alloy, square taper, 48/38/28T w/ chainguard

Shifters

Shimano EF510, Ez-Fire Plus, 7-speed

Cassette

Shimano Tourney freewheel, 7-speed, 14-34t

Chain

KMC Z51, 7-speed

Brakes

Front: Tektro, mechanical disc, resin pads, 160mm rotor, Rear: Tektro, mechanical disc, resin pads, 160mm rotor

TypeTektro Mechanical Disc

Wheels
Rims

Double wall, 32h front 36h rear, disc only

Spokes

Stainless, 14g

Front Hub

Alloy, 6-bolt disc, loose ball bearing, QR, 32h

Rear Hub

Alloy, 7-speed freewheel, 6-bolt disc, loose ball bearings, quick-release, 36h

Tires

Front: Nimbus Sport, 650bx2.3", 60 TPI w/ BlackBelt Protection, Rear: Nimbus Sport, 650bx2.3", 60 TPI w/ BlackBelt Protection

Rider Notes
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First added November 6

Last updated November 6

Not listed for 2,401 days