Polygon Siskiu T7E

2025 MountainEnduro Electric bicycle Manufacturer page

Last known price: $3,999

Prices shown first for United States
Travel: 150 / 140 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 34t / 10–51t
Gear range: 510%
Battery: 630 Wh
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 155–166
MD 164–176
LG 174–186
XL 184–195

Components

23 of 28 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

Electric system

4 parts

Suspension

2 parts

Drivetrain

6 parts

Bottom bracket

ALLOY FLAT W/ REPLACEABLE PIN Not identified
Cassette
- Shimano Deore CS-M6100-12 12 speeds 10–51t
CS-M6100-12CS-M6100
Chain
- KMC
Crankset
- Shimano SM-CRE80-12-B 1 speed 34t
SM-CRE80-12
Rear derailleur
- Shimano SLX RD-M7100-SGS 12 speeds
RD-M7100-SGS
Shifters
- Shimano SLX SL-M7100-R 12 speeds
SL-M7100

Brakes

3 parts

Brake levers
- SRAM
Brakes
- SRAM
Disc rotors
- Shimano
SM-RT64RT-EM600

Wheels and tires

5 parts

Front hub
- Shimano HB-MT400-B
HB-MT400
Rear hub
- Shimano FH-MT410-B
FH-MT410
Rims

ALLOY DOUBLE WALL FV H:18mm 622x35 32H FOR TYRE 622-54/76 W/ TUBELESS TAPE Not identified
Spokes

F: STAINLESS 14G NDS:294mm DS:296mm W/ 12mm BRASS NIPPLE / R: STAINLESS 14G NDS:294mm DS:292mm W/ 12mm BRASS NIPPLE Not identified
Tires
- Schwalbe

Cockpit and contact points

6 parts

Handlebar
- Entity
Headset
- FSA NO.57E
Pedals

Alloy Flat Pedal w/ Replaceable Pin and Reflector Not identified
Saddle
- Entity
Seatpost
- Tranz-X
JD-YSP23JL
Stem
- Entity

Other components

1 part

Fenders
- SR Suntour

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 465mm

Stack 619mm

Wheelbase 1225mm

Head angle 65.0°

Seat angle 77.0°

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	445	465	485	505
Stackmm	618	619	627	641
Top tube lengthmm	588	608	630	653
Seat tube lengthmm	390	400	430	450
Head tube lengthmm	95	95	105	120
Head tube angle	65°	65°	65°	65°
Seat tube angle	77°	77°	77°	77°
Chainstay lengthmm	445	445	445	445
Wheelbasemm	1205	1225	1249	1275
Front centermm	763	783	807	833
Bottom bracket dropmm	39	39	39	39
Bottom bracket heightmm	337	337	337	337
Standover heightmm	677	683	706	720
Fork rakemm	42	42	42	42
Trailmm	128	128	128	128
Stack/reach ratio	1.39	1.33	1.29	1.27

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: Full suspension
Front travel: 150 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 19.3 in
Highest gear: 98.6 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Electric system

Battery capacity: 630 Wh

Additional specifications

Battery: SHIMANO BT-EN806 FOR DOWN TUBE INTEGRATED - 630Wh (36V, 14Ah)
Fork spring: Air
Tire width: 2.6″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

3 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: 2025
Sample: 1,419 bicycles with this information
Coverage: 97.5% of the class

Rear travel

140 mm

This value is below the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,106 bicycles with this information
Coverage: 76.0% of the class

Shifting

Mechanical

477 of 1,455 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,455 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.4 km/h
Highest gear: 37.8 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: 19.3–98.6 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 2025 builds
Specification	This bicycle Polygon Siskiu T7E	Polygon Siskiu HE (Bosch)	Polygon Siskiu HE Shimano	Polygon Siskiu HE Shimano Di2	Polygon Siskiu T6E	Polygon Siskiu TE
Frame
Bicycle weight	Not informed	Not informed	Not informed	Not informed	Not informed	24.3 kg
Suspension
Front travel	150 mm	130 mm	130 mm	130 mm	140 mm	150 mm
Rear travel	140 mm	Not informed	Not informed	Not informed	140 mm	140 mm
Drivetrain
Smallest chainring	34	38	34	38	34	34
Largest chainring	34	38	34	38	34	34
Rear sprockets	12	12	10	11	11	12
Smallest sprocket	10	11	11	11	Not informed	11
Largest sprocket	51	50	48	50	Not informed	50
Lowest gear	19.3 in	20.9 in	19.5 in	20.9 in	Not informed	18.7 in
Highest gear	98.6 in	95.0 in	85.0 in	95.0 in	Not informed	85.0 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic	Mechanical	Mechanical
Derailleur hanger	Not informed	Not informed	Not informed	Not informed	Not informed	UDH
Electric bicycle systems
Battery capacity	630 Wh	625 Wh	504 Wh	630 Wh	504 Wh	625 Wh
Other specifications
Fork spring	Air	Air	Air	Air	Not informed	Air
Tire width	2.6″	2.4″	2.4″	2.4″	2.4″	2.6″
Wheel size	29″	27.5″	27.5″	27.5″	29″	27.5″
Tire clearance	Not informed	Not informed	Not informed	Not informed	Maximum tire width: 2.6″	Not informed