Lowest1.86:1
Highest3.71:1
Total range200%
Estimated speed At 90 RPM
Lowest gear
Highest gear
Rear tire: 20×1.75.
Velopedia Bicycle Archive
2025 Polygon Urbano 3
Original specifications: geometry for 1 published size.
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At a glance
Archive #900001903- Model year
- 2025
- Category
- Folding
- Original MSRP
- $459.00
- Sizes
- ALL SIZE
- Colors
- Red, Silver
- Geometry
- 1 manufacturer size
- In this record
- 22 specifications · archived image · original MSRP · geometry
Original buildAluminum
Frameset
| Frame Construction | ALX Foldable |
|---|---|
| Frame Material | Aluminum |
| Fork | Steel Rigid Fork |
| Fork Material | Steel |
Drivetrain
| Shifters | Shimano RV100, 1X7-Speed, Revo Shifter |
|---|---|
| Rear Derailleur | Shimano RD-TZ31 |
| Crankset | Prowheel Pro-552PP 52T |
| Bottom Bracket | Cartridge Bearing W/ Caged Bearing & 68mm BB Shell |
| Cassette | Steel Freewheel Cassette 14-28T |
| Chain | Meile M-70 |
| Pedals | Foldable PP Cage W/ Reflector |
Brakes
| Brakes | ALLOY MECHANICAL DISC BRAKE; Levers: TEKTRO CL-330TS; Rotors: 160mm, 6-BOLTS |
|---|
Cockpit & Contact Points
| Headset | Black Sizes (CT) : All Size Rail : Steel Ø7mm |
|---|---|
| Handlebar | ALLOY FLAT HANDLEBAR, W: 560mm, BB: 25.4mm, R/D: 0mm, B: 6degree |
| Stem | Foldable Alloy, E: 308 - 430mm, BB: 25.4mm |
| Saddle | Black, R : Steel Ø7mm |
| Seatpost | Alloy Seatpost, DXL: 33.9 X 580mm |
Wheels & Tires
| Hubs | F: Alloy NUT 9X100mm 32H, R: NUT 9X135mm 32H |
|---|---|
| Wheels | Alloy Double Wall, 32H |
| Rims | F: Alloy Double Wall H: 20mm W: 21mm 32H for Tyre 406-20, R: Alloy Double Wall H: 20mm W: 21mm 32H for Tyre 406-20/35 |
| Front Tire | Kenda K-154 20"X1.75" |
| Rear Tire | Kenda K-154 20"X1.75" |
No specifications match. Try a component name or clear your search.
Geometry
Frame measurements by size.
Reference drawing
Size
Measurement
Measurement
—
Select an available measurement to locate it on the frame.
All geometry measurements1 size · 13 measurements
| Measurement | ALL SIZE |
|---|---|
| Seat tube | 330 mm |
| Effective top tube | 578 mm |
| Head tube | 95 mm |
| Head-tube angle | 73° |
| Seat-tube angle | 73° |
| Actual seat-tube angle | 73° |
| Chainstay / rear center | 400 mm |
| Wheelbase | 991 mm |
| Bottom-bracket drop | 40 mm |
| Bottom-bracket height | 296 mm |
| Reach | 434.7 mm |
| Stack | 340.8 mm |
| Standover height | 576.6 mm |
Dimensions as recorded.
Gearing
Lower gears help on climbs. Higher gears suit higher speeds.
RPM
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.
Try your current gearingChanged tires or gears? Calculate your setup.
Your changes apply to this calculation. The archived build stays unchanged.
Gearing results
| Measure | Original | Your setup |
|---|---|---|
| Lowest ratio | — | — |
| Highest ratio | — | — |
| Total range | — | — |
| Lowest-gear speed | — | — |
| Highest-gear speed | — | — |
Speeds are estimates. These calculations do not establish component compatibility or available tire clearance.
Parts & serviceability
Find replacement parts
KENDA K-154 20"X1.75"
Replacement search: 20x1.75 bicycle tire Before ordering: Check rim type and tire clearance.
ALLOY SEATPOST
DxL: 33.9 x 580mm
Based on the original build. Check fit and installed parts before ordering. Affiliate links may earn Velopedia a commission. As an Amazon Associate I earn from qualifying purchases.
Parts and service referenceQuick reference before buying parts
Archived specifications for reference. Check the fitted parts before ordering.
- Front tire
- KENDA K-154 20"X1.75"
- Rear tire
- KENDA K-154 20"X1.75"
- Seatpost diameter
- 33.9 mm
- Bottom bracket / shell
- CARTRIDGE BEARING W/ CAGED BEARING & 68mm BB SHELL
Equipment inspection checks 10 checks based on 5 archived component groups Open equipment checksClose equipment checks
Checks selected from the archived equipment. Confirm what is fitted today. This is not a complete safety inspection; use the full inspection guide before test riding.
Full used-bike inspection guide →
Frame and fork
Inspect the frame and fork →Archived: Frame: ALX FOLDABLE · Fork: STEEL RIGID FORK · Steel
Drivetrain
Check drivetrain wear →Archived: Shifters: SHIMANO RV100, 1X7-SPEED, REVO SHIFTER · Rear derailleur: SHIMANO RD-TZ31 · Crankset: PROWHEEL PRO-552PP 52T · Bottom bracket: CARTRIDGE BEARING W/ CAGED BEARING & 68mm BB SHELL · Cassette: STEEL FREEWHEEL CASSETTE 14-28T · Chain: MEILE M-70
Brakes
Inspect the brakes →Archived: Brakes: ALLOY MECHANICAL DISC BRAKE; Levers: TEKTRO CL-330TS; Rotors: 160mm, 6-BOLTS
Wheels and tires
Check wheels and tires →Archived: Wheels: ALLOY DOUBLE WALL, 32H · Rims: F: ALLOY DOUBLE WALL H: 20mm W: 21mm 32H FOR TYRE 406-20, R: ALLOY DOUBLE WALL H: 20mm W: 21mm 32H FOR TYRE 406-20/35 · Hubs: F: ALLOY NUT 9x100mm 32H, R: NUT 9x135mm 32H · Front tire: KENDA K-154 20"X1.75" · Rear tire: KENDA K-154 20"X1.75"
Controls and contact points
Archived: Headset: BLACK SIZES (CT) : ALL SIZE RAIL : STEEL ø7mm · Handlebar: ALLOY FLAT HANDLEBAR, W: 560mm, BB: 25.4mm, R/D: 0mm, B: 6degree · Stem: FOLDABLE ALLOY, E: 308 - 430mm, BB: 25.4mm · Seatpost: ALLOY SEATPOST, DxL: 33.9 x 580mm · Saddle: BLACK, R : STEEL ø7mm · Pedals: FOLDABLE PP CAGE W/ REFLECTOR
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Specifications are presented as a reference. Components may vary by market, size, production run, or later manufacturer revisions.