Polygon Siskiu T8 30th Anniversary Edition

2020 MountainEnduro Manufacturer page

Polygon Siskiu T8 30th Anniversary Edition, color Black

Last known price: $2,199

Prices shown first for United States
Travel: 150 / 150 mm Fork / rear shock
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Weight: 13.6 kg 30.0 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
MD 168–180
MD 168–180
LG 178–189
XL 186–199

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

ALX TRAIL 150MM TRAVEL (27.5”) / 140MM TRAVEL (29”), TAPER H/T TA BOOST Not identified

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket

BSA THREADED Not identified
Cassette
- Shimano SLX CS-M7100-12 12 speeds 10–51t
CS-M7100-12
Chain
- Shimano
Crankset
- Prowheel 32t
MPX-32T-TT
Rear derailleur
- Shimano SLX RD-M7100 12 speeds
RD-M7100
Shifters
- Shimano SLX SL-M7100
SL-M7100

Brakes

1 part

Brakes
- Tektro HD-M745
HD-M745

Wheels and tires

2 parts

Rims
- Entity
Tires
- WTB

Cockpit and contact points

5 parts

Handlebar
- Entity
Pedals

None
Saddle
- Entity
Seatpost

EXA FORM RAGEI 125MM (S-M)/150MM (L-XL), ZERO OFFSET, 30.9MM Not identified
Stem
- Entity

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 430mm

Stack 618mm

Wheelbase 1171mm

Head angle 66.5°

Seat angle 74.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	410	430	430	450	475
Stackmm	595.1	599.7	618.4	623	627.6
Top tube lengthmm	571	596.3	601.5	627.4	656.7
Seat tube lengthmm	395	435	435	485	520
Head tube lengthmm	105	110	100	105	110
Head tube angle	66°	66°	66.5°	66.5°	66.5°
Seat tube angle	74.9°	74.5°	74.5°	74.1°	73.9°
Chainstay lengthmm	430	430	435	435	435
Wheelbasemm	1145.9	1168	1170.8	1192.8	1219.8
Front centermm	717	739	739	761	788
Bottom bracket dropmm	20	20	39	39	39
Bottom bracket heightmm	336.5	336.5	337	337	337
Standover heightmm	663.3	695.1	697.9	734.3	758.7
Fork rakemm	46	46	51	51	51
Trailmm	108	108	107	107	107
Stack/reach ratio	1.45	1.40	1.44	1.38	1.32

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
Bicycle weight: 13.6 kg

30.0 lb

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 150 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.6″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

5 measures

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

Front travel

150 mm

This value is below the central range for this class.

Cohort: Mountain / Enduro Model year: 2020
Sample: 829 bicycles with this information
Coverage: 98.5% of the class

Rear travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2020
Sample: 678 bicycles with this information
Coverage: 80.6% of the class

Lowest gear

18.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2020
Sample: 705 bicycles with this information
Coverage: 83.8% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2020
Sample: 705 bicycles with this information
Coverage: 83.8% of the class

Shifting

Mechanical

50 of 841 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2020
Sample: 841 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 km/h

Total gear range 510%

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: 18.2–92.8 gear inches
Class reference (p10–p90): 17.3–93.5 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Enduro Model year: 2020
Lowest gear: 705 bicycles with this information, 83.8% of the class
Highest gear: 705 bicycles with this information, 83.8% 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 Siskiu T8 30th Anniversary Edition	Polygon Siskiu D5	Polygon Siskiu D7	Polygon Siskiu N8	Polygon Siskiu N9	Polygon Siskiu T7
Frame
Bicycle weight	13.6 kg	17.03 kg	16.35 kg	14.5 kg	14.3 kg	15.6 kg
Suspension
Front travel	150 mm	100 mm	120 mm	170 mm	170 mm	150 mm
Rear travel	150 mm	120 mm	120 mm	170 mm	170 mm	140 mm
Drivetrain
Smallest chainring	32	36	32	32	32	32
Largest chainring	32	36	32	32	32	32
Rear sprockets	12	9	11	12	12	12
Smallest sprocket	10	11	11	11	10	10
Largest sprocket	51	36	51	50	51	51
Lowest gear	18.2 in	27.5 in	18.2 in	18.6 in	18.2 in	18.2 in
Highest gear	92.8 in	90.0 in	84.4 in	84.4 in	92.8 in	92.8 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Bottom bracket standard	BSA	Not informed	Not informed	BSA	BSA	BSA
Fork spring	Air	Coil	Not informed	Air	Air	Not informed
Tire width	2.6″	2.25″	2.25″	2.6″	2.6″	2.4″
Wheel size	27.5″ / 29″	27.5″	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″