Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 650b -
Groupset Altus, Tourney -
Suspension Rigid -
Brakes Mechanical Disc
Sizing
Recommended size guide.
SM
158cm - 171cm
MD
168cm - 180cm
LG
178cm - 189cm
XL
186cm - 199cm
Parts list
Components
Main components, grouped by system.
Bike components
Frame
Frame
Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, post-mount disc, fender/rack mounts
Suspension Fork
Steel formed tubes, post-mount disc, fender/rack mounts
Drivetrain
Rear Derailleur
Shimano Altus, 7-/8-speed
Front Derailleur
Shimano Tourney FD-TY710
Shift Levers
Shimano EF500, 7-speed
Crank
Shimano Tourney, 3-piece, 46/30T, 46/30T
Chain
KMC Z7, 7-speed w/ Missing Link™
Pedals
Specialized City, platform
Wheels
Front Hub
Alloy, 6-bolt disc, loose ball bearing, quick-release, 32h
Rear Hub
Alloy, 6-bolt disc, 7-speed freehub, loose ball bearing, quick-release, 32h
Rims
650b disc, double-wall alloy, pinned, 32h
Spokes
Stainless, 14g
Tires
Nimbus II Sport, 650b x 2.3"
Brakes
Brakes
Tektro SPD-21 Mechanical Disc, Post Mount, 160mm
Cockpit
Stem
Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
Handlebar
Specialized Roll, 6061 alloy, 15-degree backsweep, 125mm rise, 31.8mm
Grips
Specialized Body Geometry Contour, lock-on
Seat
Saddle
Body Geometry "The Cup," 6-degree rise, steel rails, 245mm
Seatpost
Spring suspension, alloy, 27.2mm, 2-bolt clamp
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | MD | LG | XL |
|---|---|---|---|---|
| Stack Reach Ratio | 1.7 mm | 1.77 mm | 1.76 mm | 1.72 mm |
| Bottom Bracket Height | 285 mm | 285 mm | 285 mm | 285 mm |
| Front Center | 617 mm | 624 mm | 653 mm | 684 mm |
| Rake | 55 mm | 55 mm | 55 mm | 55 mm |
| Trail | 84 mm | 77 mm | 77 mm | 77 mm |
| Stack | 575 mm | 608 mm | 636 mm | 659 mm |
| Reach | 338 mm | 344 mm | 362 mm | 384 mm |
| Top Tube Length | 586 mm | 605 mm | 635 mm | 667 mm |
| Seat Tube Angle | 67 ° | 67 ° | 67 ° | 67 ° |
| Seat Tube Length | 375 mm | 440 mm | 480 mm | 520 mm |
| Head Tube Angle | 68 ° | 69 ° | 69 ° | 69 ° |
| Head Tube Length | 155 mm | 185 mm | 215 mm | 240 mm |
| Chainstay Length | 472 mm | 472 mm | 472 mm | 472 mm |
| Wheelbase | 1080 mm | 1087 mm | 1116 mm | 1147 mm |
| Bottom Bracket Drop | 70 mm | 70 mm | 70 mm | 70 mm |
| Standover Height | 793 mm | 842 mm | 873 mm | 903 mm |
| Wheels | 650 | 650 | 650 | 650 |
| Rider Min Height | 158 cm | 168 cm | 178 cm | 186 cm |
| Rider Max Height | 171 cm | 180 cm | 189 cm | 199 cm |
Model Overview
Roll Sport belongs to the Specialized Roll model. Specialized launched 70 bikes of this model so far. You can get a glimpse at all models from 2021, by clicking on this link.
Model range prices
Specialized ROLL ROLL SPORT LOW ENTRY TW 2021 is the most economical model, with a starting price of 573$. Specialized Roll Elite – Low-Entry 2021 on the other hand costs 1100$, and is the most expensive model.
Safety
When you go for a ride, don’t forget to put your helmet on. Moreover, ride with traffic, not against it. This will help you stay visible to drivers and also makes it easier for them to see you.
Average price for Comfort bikes
According to our calculations, the average cost of a Comfort bike that is reliable is 360$. However, you could also get a good Comfort bike even if you pay a lower amount than the average price. To make sure you don’t pay a higher amount than normal for your bike, always do some components analysis and read reviews.
Furthermore, if we have a quick look at this model’s cost, we can see that at its release date the price was 800$. If we compare this with the average Comfort bike cost we notice that the price is 122.22% more expensive.
Overview of components
Fork material
The fork is made out of steel, which tends to be more flexible than carbon forks in general. However, a carbon fork is considerably lighter.
Wheels size
As for the wheels, Specialized Roll Sport 2021, has a aluminum model. 650b wheels make a great choice if you want to sacrifice speed for comfort. However, they don’t perform so well when you go over bumps and obstacles.
Brakes
For your safety, it is important to have quality breaks on your bike. Specialized Roll Sport has Mechanical Disc brakes installed. These brakes are also very popular, and a lot cheaper than hydraulic disk brakes. However, performance-wise there is room for improvement.
Sizes
This bike is available in 4 sizes. They vary from 158 cm – 199 cm (5.18 ft – 6.53 ft). In conclusion, it won’t take much to find one that’s right for you.