Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 650b -
Groupset Tourney, Shimano -
Suspension Rigid -
Drivetrain 3 × 7 -
Brakes Mechanical Disc
Sizing
Recommended size guide.
SM
158cm - 170cm
MD
168cm - 179cm
LG
176cm - 187cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, disc mount, fender/rack mounts
Suspension Fork
Roll Disc Steel, fender/rack mounts
Drivetrain
Rear Derailleur
Shimano Tourney, 7-speed
Front Derailleur
Shimano Tourney, top swing, 31.8mm band clamp
Shift Levers
Shimano EF51, EZ Fire Plus, 7-speed
Cassette
Shimano Tourney freewheel, 7-speed, 14-34t
Crank
Stout, forged alloy, 48/38/28T w/chainguard
Bottom Bracket
BSA, square taper, cartridge bearings
Chain
KMC Z51, 7-speed
Pedals
Specialized City platform
Wheels
Front Hub
Specialized disc, double-sealed, loose ball bearings, 9mm QR
Rear Hub
Specialized disc, loose ball bearings, QR
Rims
650b disc, double-wall aluminum, 15.5mm rim depth, 30mm internal width, 32h
Spokes
Stainless, 14g
Tires
Nimbus Sport, 60 TPI, BlackBelt protection, 650b x 2.3""
Brakes
Brakes
Tektro, mechanical disc, resin pads, 160mm rotor
Cockpit
Stem
Forged alloy, 17-degree rise, 31.8mm clamp
Handlebar
Specialized Roll, 6061 alloy, 15-degree backsweep, 5-degree upsweep, 125mm rise, 31.8mm
Seat
Saddle
Body Geometry The Cup, steel rails, 245mm
Seatpost
Dual-Bolt Diecast Head, AL6061 Post, Spring Suspension
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG |
|---|---|---|---|
| Stack Reach Ratio | 1.71 mm | 1.78 mm | 1.77 mm |
| Bottom Bracket Height | 285 mm | 285 mm | 285 mm |
| Front Center | 618 mm | 626 mm | 654 mm |
| Rake | 55 mm | 55 mm | 55 mm |
| Trail | 84 mm | 77 mm | 77 mm |
| Stack | 578 mm | 611 mm | 639 mm |
| Reach | 338 mm | 344 mm | 362 mm |
| Top Tube Length | 587 mm | 607 mm | 637 mm |
| Seat Tube Angle | 67 ° | 67 ° | 67 ° |
| Seat Tube Length | 375 mm | 440 mm | 480 mm |
| Head Tube Angle | 68 ° | 69 ° | 69 ° |
| Head Tube Length | 155 mm | 185 mm | 215 mm |
| Chainstay Length | 472 mm | 472 mm | 472 mm |
| Wheelbase | 1081 mm | 1089 mm | 1118 mm |
| Bottom Bracket Drop | 70 mm | 70 mm | 70 mm |
| Standover Height | 694 mm | 756 mm | 798 mm |
| Wheels | 650 | 650 | 650 |
| Rider Min Height | 158 cm | 168 cm | 176 cm |
| Rider Max Height | 170 cm | 179 cm | 187 cm |
Model Overview
Roll Sport completes the Specialized Roll model. There are 70 bikes that carry this model name. You can easily view all of the Specialized Roll bikes models from 2017, here.
Safety
Make sure you wear a helmet on every ride, and that your bike performs well. In short, this means checking the tires, brakes, and chain to make sure everything is in good working order.
Average price for Comfort bikes
According to our calculations, the average cost of a Comfort bike that is reliable is 360$. However, paying less money than this amount doesn’t mean that you couldn’t get a great Comfort bike. In short, before purchasing your ideal bike do some research about its components, and also check for reviews online.
Overview of components
Fork material
The fork on this bike is made out of steel, so, it can add some extra weight to your bike. However, steel is a pretty tough and durable material.
Wheels size
The Roll Sport 2017 bike is equipped with aluminum wheels when leaving the factory. 650b wheels make a great choice if you want to sacrifice speed for comfort. However, if speed is what you’re after, 700c wheels are a better fit.
Brakes
For your safety, it is important to have quality breaks on your bike. Specialized Roll Sport has Mechanical Disc brakes installed. They deliver good performance and cost less than hydraulic disk brakes. However, with hydraulic disk brakes, you have the ultimate braking power!
Sizes
Roll Sport comes in 3 sizes, that range from 158 cm – 187 cm (5.18 ft – 6.14 ft). In conclusion, you won’t have a problem finding one that suits you.