Polygon Xtrada 8

2020 MountainTrail Manufacturer page

Last known price: $1,199

Prices shown first for United States
Fork travel: 120 mm
Wheels: 27.5″, 29″
Drivetrain: 1 × 11 32t / 11–46t
Gear range: 418%
Weight: 13.3 kg 29.3 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
LG 178–189
XL 186–199

Components

11 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 XC SPORT FRAME 27.5” Not identified

Suspension

2 parts

Fork
- RockShox Recon RL
RL-B1
Rear shock

None

Drivetrain

6 parts

Bottom bracket

INCLUDE CRANKSET Not identified
Cassette
- SunRace 11–46t
Chain
- KMC X11 11 speeds
Crankset

ALLOY CRANKSET 32T Not identified
Rear derailleur
- Shimano Deore XT RD-M8000
RD-M8000
Shifters
- Shimano SLX SL-M7000
SL-M7000

Brakes

1 part

Brakes
- Shimano BL-MT201
BL-MT201

Wheels and tires

2 parts

Rims

ALLOY WHEELSET W/ BOOST TA HUBS 32H Not identified
Tires
- WTB

Cockpit and contact points

5 parts

Handlebar
- Entity
Pedals

ALLOY PEDALS Not identified
Saddle
- Entity
Seatpost
- Entity
Stem
- Entity

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 420mm

Stack 624mm

Wheelbase 1116mm

Head angle 69.5°

Seat angle 73.0°

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 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	400	420	420	435	435	450
Stackmm	610	610	624	615	624	629
Top tube lengthmm	587	607	611	623	626	642
Seat tube lengthmm	406	456	431	506	470	516
Head tube lengthmm	100	100	100	105	105	105
Head tube angle	69°	69°	69.5°	69°	69.5°	69.5°
Seat tube angle	73°	73°	73°	73°	73°	73°
Chainstay lengthmm	430	430	440	430	440	440
Wheelbasemm	1089	1109	1116	1125	1131	1148
Front centermm	663	683	683	699	698	715
Bottom bracket dropmm	47	47	60	47	60	60
Bottom bracket heightmm	299	299	316	299	316	316
Standover heightmm	711	744	743	791	775	805
Fork rakemm	42	42	46	42	46	46
Trailmm	91	91	91	91	91	91
Stack/reach ratio	1.53	1.45	1.49	1.41	1.43	1.40

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: 13.3 kg

29.3 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 46
Lowest gear: 20.2 in
Highest gear: 84.4 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 2.25″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

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: 2020
Sample: 1,348 bicycles with this information
Coverage: 93.8% of the class

Lowest gear

20.2 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Highest gear

84.4 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,217 bicycles with this information
Coverage: 84.6% of the class

Shifting

Mechanical

55 of 1,437 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2020
Sample: 1,437 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.7 km/h
Highest gear: 32.3 km/h

Total gear range 418%

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: 20.2–84.4 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: 2020
Lowest gear: 1217 bicycles with this information, 84.6% of the class
Highest gear: 1217 bicycles with this information, 84.6% 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

Differences across 2020 builds
Specification	This bicycle Polygon Xtrada 8	Polygon Xtrada 5	Polygon Xtrada 6 1x11	Polygon Xtrada 6 1x10	Polygon Xtrada 6 2x11	Polygon Xtrada 6 2x10
Frame
Bicycle weight	13.3 kg	13.8 kg	Not informed	Not informed	Not informed	13.3 kg
Suspension
Front travel	120 mm	120 mm	120 mm	100 mm	120 mm	120 mm
Drivetrain
Front chainrings	1	2	1	1	2	2
Smallest chainring	32	22	32	32	26	22
Largest chainring	32	36	32	32	36	36
Rear sprockets	11	10	11	10	11	10
Largest sprocket	46	42	51	42	42	36
Lowest gear	20.2 in	15.2 in	18.2 in	22.1 in	18.0 in	16.8 in
Highest gear	84.4 in	94.9 in	84.4 in	84.4 in	94.9 in	90.0 in
Other specifications
Wheel size	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″ / 29″	27.5″
Bottom bracket standard	Not informed	BSA	BSA	Not informed	BSA	Not informed
Fork spring	Not informed	Coil	Not informed	Not informed	Not informed	Not informed