Rear tire: 650B×2.3″.
Velopedia Bicycle Archive
2021 Specialized Roll
Original specifications: geometry for 4 published sizes.
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At a glance
- Model year
- 2021
- Category
- City & Commuter
- Original MSRP
- $700.00
- Sizes
- S, M, L, XL
- Colors
- Gloss Cobalt / Tarmac Black / Satin Black Reflective, Tarmac Black / Ion / Satin Black
- Geometry
- 4 manufacturer sizes
- In this record
- 22 specifications · 6 archived images · original MSRP · geometry
- Archive ID
- 900004313
Model history 1 other year
Original buildAluminum
Frameset
| Frame Construction | Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, V-brake, fender/rack mounts |
|---|---|
| Frame Material | Aluminum |
| Fork | Steel formed tubes, V-brake, fender/rack mounts |
| Fork Material | Steel |
Drivetrain
| Shifters | Shimano Altus, 7-speed |
|---|---|
| Rear Derailleur | Shimano Altus, 7-/8-speed |
| Crankset | Alloy, 3-piece; chainrings: 40T |
| Bottom Bracket | BSA, square-taper, 68mm |
| BB Shell Width | 68 mm |
| Cassette | Shimano HG200, 7-speed, 12-32t |
| Chain | KMC Z7, 7-speed w/ Missing Link™ |
| Pedals | Specialized City, platform |
Brakes
| Brakes | (F) V-brake, linear pull / (R) V-brake, linear pull |
|---|
Cockpit & Contact Points
| Handlebar | Specialized Roll, 6061 alloy, 15-degree backsweep, 125mm rise, 31.8mm |
|---|---|
| Stem | Specialized, 3D-forged alloy, 4-bolt, 7-degree rise |
| Saddle | Body Geometry "The Cup," 6-degree rise, steel rails, 245mm |
| Seatpost | Alloy, 2-bolt Clamp, 12mm offset, 27.2mm, anti-corrosion hardware |
Wheels & Tires
| Hubs | (F) Alloy, loose ball bearing, quick-release, 32h / (R) Shimano Tourney, 7-speed freehub, 135mm spacing, QR, 36h |
|---|---|
| Rims | 650b disc, double-wall alloy, pinned, 32h |
| Spokes | Stainless, 14g |
| Front Tire | Nimbus II Sport, 650b x 2.3" |
| Rear Tire | Nimbus II Sport, 650b x 2.3" |
Geometry
Frame measurements by size.
Frame diagram
Select an available measurement to locate it on the frame.
All geometry measurements4 sizes · 20 measurements
| Measurement | S | M | L | XL |
|---|---|---|---|---|
| Seat tube | 375 mm | 440 mm | 480 mm | 520 mm |
| Effective top tube | 594 mm | 613 mm | 643 mm | 675 mm |
| Head tube | 155 mm | 185 mm | 215 mm | 240 mm |
| Head-tube angle | 68° | 69° | 69° | 69° |
| Seat-tube angle | 67° | 67° | 67° | 67° |
| Chainstay / rear center | 480 mm | 480 mm | 480 mm | 480 mm |
| Wheelbase | 1088 mm | 1095 mm | 1124 mm | 1155 mm |
| Bottom-bracket drop | 70 mm | 70 mm | 70 mm | 70 mm |
| Bottom-bracket height | 285 mm | 285 mm | 285 mm | 285 mm |
| Reach | 346 mm | 352 mm | 370 mm | 392 mm |
| Stack | 583 mm | 616 mm | 644 mm | 667 mm |
| Standover height | 801 mm | 850 mm | 881 mm | 911 mm |
| Fork offset / rake | 55 mm | 55 mm | 55 mm | 55 mm |
| Front center | 617 mm | 624 mm | 653 mm | 684 mm |
| Trail | 84 mm | 77 mm | 77 mm | 77 mm |
| Fork length / axle-to-crown | 420 mm | 420 mm | 420 mm | 420 mm |
| Seatpost length | 350 mm | 350 mm | 350 mm | 350 mm |
| Crank length | 165 mm | 170 mm | 175 mm | 175 mm |
| Stem length | 60 mm | 60 mm | 60 mm | 60 mm |
| Handlebar width | 680 mm | 680 mm | 680 mm | 680 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM = pedal turns per minute.
How it works
Ratio = front teeth ÷ rear teeth. Hub gears also include the hub’s internal ratio. A 400% range means the highest ratio is four times the lowest.
Speeds are estimates from tire size and pedal cadence. Actual speeds vary.
Parts & serviceability
Find replacement parts
More parts (4)Fewer parts
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Bike-specific inspection checklist 19 checks based on 5 archived component groups Open checklistClose checklist
This checklist uses the archived equipment for this bike. It cannot confirm the condition, service history or later component changes of the example in front of you.
Identity and fit
Follow the full used-bike inspection order →Archived: 2021 Specialized Roll · City/Commuter · Published sizes: S, M, L, XL
Frame and fork
Inspect the frame and fork →Archived: Frame: Specialized A1 Premium Aluminum, Ground Control Positioning, formed tubes, V-brake, fender/rack mounts · Fork: Steel formed tubes, V-brake, fender/rack mounts · Steel
Drivetrain
Check drivetrain wear →Archived: Shifters: Shimano Altus, 7-speed · Rear derailleur: Shimano Altus, 7-/8-speed · Crankset: Alloy, 3-piece; chainrings: 40T · Bottom bracket: BSA, square-taper, 68mm · Cassette: Shimano HG200, 7-speed, 12-32t · Chain: KMC Z7, 7-speed w/ Missing Link™
Brakes
Inspect the brakes →Archived: Brakes: (F) V-brake, linear pull / (R) V-brake, linear pull
Wheels and tires
Check wheels and tires →Archived: Rims: 650b disc, double-wall alloy, pinned, 32h · Hubs: (F) Alloy, loose ball bearing, quick-release, 32h / (R) Shimano Tourney, 7-speed freehub, 135mm spacing, QR, 36h · Front tire: Nimbus II Sport, 650b x 2.3" · Rear tire: Nimbus II Sport, 650b x 2.3"
Controls and contact points
Archived: Handlebar: Specialized Roll, 6061 alloy, 15-degree backsweep, 125mm rise, 31.8mm · Stem: Specialized, 3D-forged alloy, 4-bolt, 7-degree rise · Seatpost: Alloy, 2-bolt Clamp, 12mm offset, 27.2mm, anti-corrosion hardware · Saddle: Body Geometry "The Cup," 6-degree rise, steel rails, 245mm · Pedals: Specialized City, platform
Before and during the test ride
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Gallery6 images
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.





