Polygon Sierra Deluxe Sport

Name: Polygon Sierra Deluxe Sport
Brand: Polygon

2021 UrbanFitness Manufacturer page

Last known price: $599

Prices shown first for United States
Fork travel: 63 mm
Wheels: 700c
Gear range: 243%
Frame: Aluminum
Brakes: Rim brake

Sizes

Size guide

The manufacturer did not publish rider heights for these sizes.

Components

10 of 18 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

Alutech Alloy Citybike Not identified

Suspension

1 part

Fork
- SR Suntour NEX

Drivetrain

7 parts

Bottom bracket

Sealed cartridge Not identified
Cassette
- Shimano MF-TZ31 14–34t
MF-TZ31
Chain
- KMC
Z-51RB
Crankset
- Shimano Tourney FC-TY501 8 speeds
FC-TY501
Front derailleur
- Shimano FD-TX51
FD-TX51
Rear derailleur
- Shimano Altus RD-M310
RD-M310
Shifters
- Shimano ST-EF41
ST-EF41

Brakes

1 part

Brakes
- Tektro

Wheels and tires

2 parts

Rims

Araya TX rim Alloy, Double Wall. Not identified
Tires
- Schwalbe

Cockpit and contact points

5 parts

Handlebar

Alloy, 640mm Not identified
Pedals
- VP
VP-615
Saddle

Comfort Saddle Not identified
Seatpost

Alloy, 27.2x350mm with spring Not identified
Stem

Alloy, Adjustable, 110mm Not identified

Other components

1 part

Racks

25kg Weight limit Not identified

Sizes and geometry

2 sizes Open in the geometry plotter

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

Size SM

Table

Reach 389mm

Stack 610mm

Wheelbase 1106mm

Head angle 69.0°

Seat angle 73.0°

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 2 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	389	409
Stackmm	610	610
Top tube lengthmm	370	390
Seat tube lengthmm	430	480
Head tube lengthmm	135	135
Head tube angle	69°	69°
Seat tube angle	73°	73°
Chainstay lengthmm	460	460
Wheelbasemm	1106	1126
Front centermm	651	671
Bottom bracket dropmm	50	50
Bottom bracket heightmm	304	304
Standover heightmm	450	450
Fork rakemm	42	42
Trailmm	89	89
Stack/reach ratio	1.57	1.49

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

Suspension

Suspension configuration: Hardtail
Front travel: 63 mm

Drivetrain

Derived by Bikelake

Smallest sprocket: 14
Largest sprocket: 34

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Coil
Tire width: 40c
Wheel material: Aluminum
Wheel size: 700c

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

Differences across 2021 builds
Specification	This bicycle Polygon Sierra Deluxe Sport	Polygon Sierra Deluxe Sport Gent/Lady	Polygon Sierra Oosten	Polygon Sierra Oosten 26
Frame
Intended fit	Unisex	womens	Unisex	Unisex
Bicycle weight	Not informed	13.6 kg	14.2 kg	Not informed
Fork material	Not informed	Not informed	Steel	Steel
Suspension
Suspension configuration	Hardtail	Hardtail	Rigid	Rigid
Front travel	63 mm	63 mm	Not informed	Not informed
Drivetrain
Smallest sprocket	14	14	11	Not informed
Largest sprocket	34	28	32	Not informed
Front chainrings	Not informed	3	1	1
Smallest chainring	Not informed	28	36	38
Largest chainring	Not informed	48	36	38
Lowest gear	Not informed	29.0 in	32.6 in	Not informed
Highest gear	Not informed	99.4 in	94.9 in	Not informed
Rear sprockets	Not informed	Not informed	8	8
Other specifications
Fork spring	Coil	Coil	Not informed	Not informed
Suspension	Hardtail	Hardtail	Rigid	Rigid
Tire width	40c	40c	35c	35c
Wheel size	700c	700c	700c	26″