Bike details
Overview
Key information split into simple groups.
Bike summary
-
-
Frame Aluminum -
Wheels 650b -
Groupset Tourney, Altus -
Suspension Rigid -
Drivetrain 1 × 7 -
Brakes Rim
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
Shift Levers
Shimano Altus, 7-speed
Cassette
Shimano Tourney freewheel, 7-speed, 14-34t
Crank
Cold-forged alloy crankarms, 3-piece construction, 104mm BCD spider, 4-arm w/steel chainring, 42T w/steel chainguard
Bottom Bracket
BSA, square taper, cartridge bearings
Chain
KMC Z51, 6-/7-speed
Pedals
Specialized City platform
Wheels
Front Hub
Specialized V-brake, alloy, loose ball bearings, 9mm, QR
Rear Hub
Specialized V-brake, loose ball bearings, QR, 32h
Rims
650b rim brake, double-wall aluminum, 16mm rim depth, 30.4mm internal width, 32h
Spokes
Stainless, 14g
Tires
Nimbus Sport, 60 TPI, BlackBelt protection, 650b x 2.3""
Brakes
Brakes
Tektro V-brake, linear pull
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
Alloy, 12mm offset, 2-bolt clamp, 27.2mm
Fit data
Geometry
Numbers for sizing and ride feel.
| Size | SM | LG |
|---|---|---|
| Stack Reach Ratio | 1.69 mm | 1.79 mm |
| Bottom Bracket Height | 285 mm | 285 mm |
| Front Center | 618 mm | 645 mm |
| Rake | 55 mm | 55 mm |
| Trail | 84 mm | 77 mm |
| Stack | 590 mm | 651 mm |
| Reach | 350 mm | 364 mm |
| Top Tube Length | 599 mm | 639 mm |
| Seat Tube Angle | 67 ° | 67 ° |
| Seat Tube Length | 370 mm | 480 mm |
| Head Tube Angle | 68 ° | 69 ° |
| Head Tube Length | 155 mm | 215 mm |
| Chainstay Length | 484 mm | 484 mm |
| Wheelbase | 1093 mm | 1120 mm |
| Bottom Bracket Drop | 70 mm | 70 mm |
| Standover Height | 500 mm | 499 mm |
| Wheels | 650 | 650 |
Model Overview
Roll Low Entry belongs to the Specialized Roll model. Specialized launched 70 bikes of this model so far. You can get a glimpse at all models from 2017, by clicking on this link.
Safety
When cycling always take safety very seriously. Wear a helmet, obey the traffic rules and wear hi-vis clothes. In short, take care of yourself so others can take care of you.
Average price for Comfort bikes
According to our math, the average price for a trustworthy Comfort bike is 360$. However, even though the average price of a Comfort bike is lower, you might still be able to get a top-quality bike. To sum up, when you purchase your bike, make sure to check if it has reviews, and also do some components research.
Overview of components
Fork material
The fork on this bike is made out of steel, which tends to be more flexible than carbon forks in general. However, a carbon fork is considerably lighter.
Wheels
When leaving the production line, the Roll Low Entry model has aluminum wheels. The 650b wheels are very similar to 700c, with a slight difference in diameter. However, if speed is what you’re after, 700c wheels are a better fit.
Brakes
Stopping the bike when needed, it’s essential for your safety. This bike has Rim brakes. Rim brakes deliver an average performance overall. However, you could spend a little extra and get a bike that has hydraulic brakes.