Polygon Siskiu D5

2024 MountainTrail Manufacturer page

Last known price: $989

Prices shown first for United States
Travel: 120 / 120 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 9 22t / 11–34t
Gear range: 309%
Weight: 16.7 kg 36.8 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 155–166
MD 164–176
LG 174–185

Components

13 of 22 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

aluminum Not identified

Suspension

2 parts

Drivetrain

7 parts

Bottom bracket

BSA THREADED 68/73MM Not identified
Cassette
- Shimano CS-HG200 11–34t
CS-HG200
Chain
- KMC X9 9 speeds
Chain guide

None
Crankset
- Shimano FC-MT210 9 speeds 36/22t
FC-MT210
Rear derailleur
- Shimano Alivio RD-M3100 9 speeds
RD-M3100
Shifters
- Shimano Alivio SL-M3100
SL-M3100

Brakes

3 parts

Brake levers
- Shimano BL-MT200
BL-MT200
Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors

FRONT:180MM REAR:160MM CENTER-LOCK Not identified

Wheels and tires

4 parts

Front hub

ALLOY QRx100mm 32H CENTER LOCK Not identified
Rear hub

ALLOY BOOST QRx141mm 32H CENTER-LOCK Not identified
Rims

ALLOY DOUBLE WALL 584-15 32H FOR TYRE 584-35/68 Not identified
Tires

PERFORMANCE TIRE 27.5"x2.25" Not identified

Cockpit and contact points

6 parts

Handlebar
- Entity
Headset

THREADLESS ZERO STACK HEADSET, ZS 44/28.6 | ZS 56/30 Not identified
Pedals

ALLOY CAGE PEDAL W/ REFLECTOR Not identified
Saddle
- Entity
Seatpost
- Entity
Stem
- Entity

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 445mm

Stack 580mm

Wheelbase 1157mm

Head angle 67.0°

Seat angle 75.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	425	445	465
Stackmm	571.2	580.4	589.6
Top tube lengthmm	572.7	595.1	617.5
Seat tube lengthmm	395	435	485
Head tube lengthmm	102	105	122
Head tube angle	67°	67°	67°
Seat tube angle	75.5°	75.5°	75.5°
Chainstay lengthmm	432	432	432
Wheelbasemm	—	1157	1181
Front centermm	319	726	750
Bottom bracket dropmm	27	27	27
Bottom bracket heightmm	326	326	326
Standover heightmm	676	696	729
Fork rakemm	42	42	42
Trailmm	105	105	105
Stack/reach ratio	1.34	1.30	1.27
Suspension and parts
Front travelmm	120	120	120
Rear travelmm	120	120	120
Crank lengthmm	170	170	170
Handlebar widthmm	760	760	760
Stem lengthmm	45	45	45

Not published by the manufacturer: Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Bicycle weight: 16.7 kg

36.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 120 mm
Rear travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 22
Largest chainring: 22
Rear sprockets: 9
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 17.8 in
Highest gear: 55.0 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
Fork spring: Coil
Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

4 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2024
Sample: 2,036 bicycles with this information
Coverage: 96.6% of the class

Lowest gear

17.8 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2024
Sample: 1,558 bicycles with this information
Coverage: 73.9% of the class

Highest gear

55.0 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2024
Sample: 1,558 bicycles with this information
Coverage: 73.9% of the class

Shifting

Mechanical

346 of 2,107 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2024
Sample: 2,107 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 21.1 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: 17.8–55.0 gear inches
Class reference (p10–p90): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2024
Lowest gear: 1558 bicycles with this information, 73.9% of the class
Highest gear: 1558 bicycles with this information, 73.9% 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 2024 builds
Specification	This bicycle Polygon Siskiu D5	Polygon Siskiu D24	Polygon Siskiu D24 EVO	Polygon Siskiu D24X	Polygon Siskiu D6	Polygon Siskiu D6 SE
Frame
Bicycle weight	16.7 kg	13.6 kg	13.6 kg	13.61 kg	17.04 kg	Not informed
Drivetrain
Smallest chainring	22	30	30	32	32	32
Largest chainring	22	30	30	32	32	32
Rear sprockets	9	8	10	10	10	10
Smallest sprocket	11	12	11	11	10	10
Largest sprocket	34	42	48	46	42	42
Lowest gear	17.8 in	17.1 in	15.0 in	16.7 in	22.1 in	22.1 in
Highest gear	55.0 in	60.0 in	65.5 in	69.8 in	92.8 in	92.8 in
Cockpit
Seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Bottom bracket standard	BSA	Not informed	BSA	BSA	BSA	BSA
Fork spring	Coil	Air	Air	Air	Coil	Coil
Tire width	2.25″	2.4″	2.4″	2.4″	2.25″	2.25″
Wheel size	27.5″	24″	24″	24″	27.5″ / 29″	27.5″ / 29″