Polygon Zeta 2

2021 UrbanCommuter Manufacturer page

Last known price: $609

Prices shown first for United States
Suspension: Rigid
Wheels: 20″
Drivetrain: 1 × 10 48t / 11–34t
Gear range: 309%
Weight: 12.8 kg 28.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

All Size 120+

Components

10 of 15 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

AL6 MINIVELO FRAME 20" Not identified

Suspension

2 parts

Fork

ALLOY RIGID FORK Not identified
Rear shock

None

Drivetrain

6 parts

Bottom bracket

BSA THREADED FOR 2-PIECE CRANKSET Not identified
Cassette
- Shimano CS-HG500 10 speeds 11–34t
CS-HG500
Chain
- KMC
Crankset

ALLOY 48T 170MM Not identified
Rear derailleur
- Shimano Tiagra RD-4700 10 speeds
RD-4700
Shifters
- Shimano Tiagra SL-4700 2 speeds
SL-4700

Brakes

1 part

Brakes
- Tektro HD-M275 / HD-M276
HD-M275HD-M276

Wheels and tires

2 parts

Rims

ALLOY DOUBLE WALL 406-21 32H FOR TYRE 406-20/35 Not identified
Tires
- Vee Tire

Cockpit and contact points

5 parts

Sizes and geometry

1 size Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size All Size

Table

Reach 413mm

Stack 568mm

Wheelbase 1079mm

Head angle 70.0°

Seat angle 74.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 20″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 1 published size

Complete manufacturer geometry by size
Measurement
Reachmm	412.5
Stackmm	567.9
Top tube lengthmm	570
Seat tube lengthmm	360
Head tube lengthmm	250
Head tube angle	70°
Seat tube angle	74.5°
Chainstay lengthmm	400
Wheelbasemm	1078.5
Front centermm	681
Bottom bracket dropmm	35
Bottom bracket heightmm	290
Standover heightmm	594
Fork rakemm	69
Stack/reach ratio	1.38

Not published by the manufacturer: Trail, Front travel, Rear travel, Crank length, Handlebar width, Stem length, Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 12.8 kg

28.2 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 48
Largest chainring: 48
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 28.2 in
Highest gear: 87.3 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Tire width: 2″
Travel: Front: Additional specification: Not available: Yes
Rear: Additional specification: Not available: Yes
Wheel material: Aluminum
Wheel size: 20″

Gearing

Estimated speeds at 80 rpm

Lowest gear: 10.8 km/h
Highest gear: 33.4 km/h

Total gear range 309%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 28.2–87.3 gear inches

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2021 builds
Specification	This bicycle Polygon Zeta 2	Polygon Zeta 2 20inch
Other specifications
Travel	Configuration: RigidFront: Additional specification: Not available: YesRear: Additional specification: Not available: Yes	Configuration: RigidFront: Additional specification: Not available: Yes