Polygon Siskiu T7 29

2019 MountainTrail Manufacturer page

Last known price: $1,899

Prices shown first for United States
Travel: 140 / 140 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 10 32t / 11–42t
Gear range: 382%
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

MD 165–177
LG 175–188
XL 185–198

Components

18 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

8 parts

Bottom bracket

BSA, threaded Not identified
Cassette
- Shimano CS-HG500-10 10 speeds
CS-HG500-10CS-HG500
Chain
- KMC X10 10 speeds
X-10
Chain guide

None
Crankset
- Prowheel
Front derailleur

None
Rear derailleur
- Shimano Deore XT
RD-M785
Shifters
- Shimano Deore SL-M6000
SL-M6000

Brakes

2 parts

Brake levers
- Shimano
BR-MT365
Brakes
- Shimano
BR-MT365

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Handlebar
- Entity
Headset

ZS 44/28.6 | ZS 56/40 Not identified
Pedals

Alloy Not identified
Saddle
- Entity
Seatpost
- Tranz-X
Stem
- Entity

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size LG

Table

Reach 450mm

Stack 623mm

Wheelbase 1193mm

Head angle 66.5°

Seat angle 74.1°

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 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	430	450	475
Stackmm	618.4	623	627.6
Top tube lengthmm	601.5	627.4	656.7
Seat tube lengthmm	435	485	520
Head tube lengthmm	100	105	110
Head tube angle	66.5°	66.5°	66.5°
Seat tube angle	74.5°	74.1°	73.9°
Chainstay lengthmm	435	435	435
Wheelbasemm	1170.8	1192.8	1219.8
Front centermm	739	761	788
Bottom bracket dropmm	39	39	39
Bottom bracket heightmm	337	337	337
Standover heightmm	697.9	734.3	758.7
Fork rakemm	51	51	51
Trailmm	107	107	107
Stack/reach ratio	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

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 140 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 42
Lowest gear: 22.1 in
Highest gear: 84.4 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: 2.35″
Wheel material: Aluminum
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

140 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 986 bicycles with this information
Coverage: 96.6% of the class

Lowest gear

22.1 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 968 bicycles with this information
Coverage: 94.9% of the class

Highest gear

84.4 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 968 bicycles with this information
Coverage: 94.9% of the class

Shifting

Mechanical

34 of 1,020 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2019
Sample: 1,020 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 8.5 km/h
Highest gear: 32.3 km/h

Total gear range 382%

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: 22.1–84.4 gear inches
Class reference (p10–p90): 16.5–92.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2019
Lowest gear: 968 bicycles with this information, 94.9% of the class
Highest gear: 968 bicycles with this information, 94.9% 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 2019 builds

Differences across 2019 builds
Specification	This bicycle Polygon Siskiu T7 29	Polygon Siskiu D5	Polygon Siskiu D7	Polygon Siskiu N8	Polygon Siskiu N8 27.5	Polygon Siskiu N8 29
Frame
Bicycle weight	Not informed	15.05 kg	14.4 kg	14.5 kg	Not informed	Not informed
Suspension
Front travel	140 mm	120 mm	120 mm	170 mm	170 mm	160 mm
Drivetrain
Front chainrings	1	3	2	1	1	1
Smallest chainring	32	22	22	32	32	32
Largest chainring	32	40	22	32	32	32
Rear sprockets	10	9	10	12	12	12
Largest sprocket	42	34	36	50	50	50
Lowest gear	22.1 in	17.8 in	16.8 in	18.6 in	17.6 in	18.6 in
Highest gear	84.4 in	100.0 in	55.0 in	84.4 in	80.0 in	84.4 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost
Other specifications
Bottom bracket standard	BSA	BSA	Not informed	BSA	BSA	BSA
Fork spring	Air	Coil	Air	Air	Air	Air
Tire width	2.35″	2.25″	2.25″	2.6″	2.6″	2.35″
Rear travel	140 mm	120 mm	120 mm	170 mm	170 mm	160 mm
Wheel size	29″	27.5″	27.5″	27.5″ / 29″	27.5″	29″