Polygon Bend FX4

2020 UrbanFitness Manufacturer page

Last known price: $999

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 10 34–50t / 11–28t
Gear range: 374%
Weight: 10.6 kg 23.4 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

50cm
53cm
56cm
58cm

The manufacturer did not publish rider heights for these sizes.

Components

13 of 16 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

URBAN SPORT ALX W/ FLATMOUNT, FENDER READY Not identified

Suspension

2 parts

Fork

URBAN SPORT ALX W/ E-THRU & FLATMOUNT, FENDER READY Not identified
Rear shock

None

Drivetrain

6 parts

Bottom bracket
- Shimano
Cassette
- Shimano CS-HG500-10 10 speeds 11–28t
CS-HG500-10
Chain
- KMC X10 10 speeds
X-10
Crankset
- Shimano Tiagra FC-4700 10 speeds 50/34t
FC-4700
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-R290
HD-R290

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Handlebar
- Entity
Pedals

ALLOY BODY & CAGE Not identified
Saddle
- Entity
Seatpost
- Entity
Stem
- Entity

Sizes and geometry

4 sizes Open in the geometry plotter

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

Size 53cm

Table

Reach 380mm

Stack 577mm

Wheelbase 1015mm

Head angle 72.0°

Seat angle 74.0°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reach Stack

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	374	379.5	385.1	399.2
Stackmm	555.4	577.2	585.5	607.6
Top tube lengthmm	533	545	565	585
Seat tube lengthmm	500	530	560	590
Head tube lengthmm	140	160	170	190
Head tube angle	71.25°	72°	72.5°	72.5°
Seat tube angle	74°	74°	73°	73°
Chainstay lengthmm	430	430	430	430
Wheelbasemm	1009.6	1014.9	1019	1039.2
Front centermm	590	595	599	619
Bottom bracket dropmm	72	72	72	72
Bottom bracket heightmm	270.5	270.5	270.5	270.5
Standover heightmm	743.7	767.8	791.6	810
Fork rakemm	45	45	46	45
Trailmm	71	66	62	63
Stack/reach ratio	1.49	1.52	1.52	1.52

Not published by the manufacturer: 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: 10.6 kg

23.4 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 28
Lowest gear: 35.2 in
Highest gear: 131.8 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: 35c
Travel: Rear: Additional specification: Not available: Yes
Additional specification: Seat: Travel: 15 mm
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

2 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Lowest gear

35.2 gear inches

This value is above the central range for this class.

Cohort: Urban / Fitness Model year: 2020
Sample: 220 bicycles with this information
Coverage: 89.0% of the class

Highest gear

131.8 gear inches

This value is above the central range for this class.

Cohort: Urban / Fitness Model year: 2020
Sample: 220 bicycles with this information
Coverage: 89.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 13.5 km/h
Highest gear: 50.5 km/h

Total gear range 374%

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: 35.2–131.8 gear inches
Class reference (p10–p90): 19.9–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Urban / Fitness Model year: 2020
Lowest gear: 220 bicycles with this information, 89.0% of the class
Highest gear: 220 bicycles with this information, 89.0% of the class

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 2020 builds
Specification	This bicycle Polygon Bend FX4	Polygon Bend CT5	Polygon Bend R2	Polygon Bend R5	Polygon Bend RIV	Polygon Bend RV Rival
Frame
Fork material	Aluminum	Aluminum	Carbon	Carbon	Aluminum	Carbon
Bicycle weight	10.6 kg	9.9 kg	Not informed	Not informed	14.75 kg	10.74 kg
Drivetrain
Front chainrings	2	1	Not informed	1	1	1
Smallest chainring	34	38	Not informed	38	38	38
Largest chainring	50	38	Not informed	38	38	38
Rear sprockets	10	11	9	11	11	11
Smallest sprocket	11	11	Not informed	11	11	11
Largest sprocket	28	42	Not informed	42	42	42
Lowest gear	35.2 in	26.2 in	Not informed	24.9 in	26.2 in	26.2 in
Highest gear	131.8 in	100.2 in	Not informed	95.0 in	100.2 in	100.2 in
Brakes
Brake type	Hydraulic disc	Hydraulic disc	Mechanical disc	Hydraulic disc	Hydraulic disc	Hydraulic disc
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	Not informed	Not informed
Tire width	35c	30c	47c	47c	40c	40c
Travel	Configuration: RigidRear: Additional specification: Not available: YesAdditional specification: Seat: Travel: 15 mm	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid	Configuration: Rigid
Wheel size	700c	700c	650b	650b	700c	700c