Polygon Helios LT8

2021 RoadRace Manufacturer page

Last known price: $1,999

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 11 11–28t
Gear range: 255%
Frame: Carbon
Brakes: Rim brake

Rider height by size (cm)

Size guide

XS 150–161
SM 159–170
MD 165–175
LG 170–180
XL 175–185
XXL 180–190

Components

12 of 15 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

ACX CARBON PERFORMANCE ROAD FRAME Not identified

Suspension

2 parts

Fork

ACX CARBON PERFORMANCE ROAD FORK Not identified
Rear shock

None

Drivetrain

6 parts

Bottom bracket
- Shimano
Cassette
- Shimano Ultegra CS-R8000 11 speeds 11–28t
CS-R8000
Chain
- KMC X11 11 speeds
Crankset
- Shimano Ultegra FC-R8000
FC-R8000
Rear derailleur
- Shimano Ultegra RD-R8000 11 speeds
RD-R8000
Shifters
- Shimano Ultegra ST-R8000
ST-R8000

Brakes

1 part

Brakes
- Shimano Ultegra BR-R8000
BR-R8000

Wheels and tires

2 parts

Rims
- Fulcrum
Tires

SUPER PERFORMANCE TYRE 700CX28 (28-622) Not identified

Cockpit and contact points

5 parts

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 388mm

Stack 547mm

Wheelbase 986mm

Head angle 73.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c 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	376.5	382.5	387.9	396.7	404.4	410.3
Stackmm	507.2	524.9	547.3	568.2	577.7	610.7
Top tube lengthmm	520	535	550	565	581	600
Seat tube lengthmm	465	500	530	560	580	600
Head tube lengthmm	110	125	145	165	176	200
Head tube angle	71°	72°	73°	73.5°	73.5°	73.5°
Seat tube angle	74.2°	73.8°	73.5°	73.5°	73°	72.5°
Chainstay lengthmm	405	410	410	410	410	410
Wheelbasemm	974.6	982.7	985.8	996	1006.7	1020
Front centermm	579	582	585	596	606	619
Bottom bracket dropmm	68	68	68	68	68	68
Bottom bracket heightmm	271.5	271.5	271.5	271.5	271.5	271.5
Standover heightmm	710.6	732.8	760.2	786.7	802.6	822.6
Fork rakemm	45	45	45	45	45	43
Trailmm	68	62	56	53	53	55
Stack/reach ratio	1.35	1.37	1.41	1.43	1.43	1.49

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: Carbon
Fork material: Carbon

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 2
Rear sprockets: 11
Smallest sprocket: 11
Largest sprocket: 28

Wheels and brakes

Wheel configuration: Same size
Brake type: Rim brake

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Tire width: 28c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

1 measure

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

Shifting

Mechanical

286 of 638 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2021
Sample: 638 bicycles with this information
Coverage: 100.0% 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 2021 builds
Specification	This bicycle Polygon Helios LT8	Polygon Helios LT8 Disc
Drivetrain
Smallest chainring	Not informed	34
Largest chainring	Not informed	50
Lowest gear	Not informed	35.2 in
Highest gear	Not informed	131.8 in
Brakes
Brake type	Rim brake	Hydraulic disc