Polygon Helios A7X

2025 RoadRace Manufacturer page

Polygon Helios A7X, color Cameleon Purple

Last known price: $3,999

Prices shown first for United States
Suspension: Rigid
Wheels: 700c
Drivetrain: 2 × 12 34–50t / 11–34t
Gear range: 455%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XXS 151–161
XS 154–164
SM 162–170
MD 168–176
LG 174–182
XL 179–187

Components

12 of 23 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

carbon Not identified

Suspension

1 part

Fork

ACX PERFORMANCE UCI APPROVED Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano BB-RS500
BB-RS500
Cassette
- Shimano 105 11–34t
CS-R7100-12
Chain
- KMC
Crankset
- Shimano 105 FC-R7100 12 speeds 50/34t
FC-R7100
Front derailleur
- Shimano 105
RD-R7150
Rear derailleur
- Shimano 105 RD-R7150 12 speeds
RD-R7150
Shifters
- Shimano 105 ST-R7170
ST-R7170

Brakes

3 parts

Wheels and tires

5 parts

Front hub

F: ALLOY 12x100mm 24H SEALED BEARINGS CL / R; ALLOY 12x142mm 24H SEALED BEARINGS CL Not identified
Rear hub

F: ALLOY 12x100mm 24H SEALED BEARINGS CL / R; ALLOY 12x142mm 24H SEALED BEARINGS CL Not identified
Rims

CARBON 622-19 24H FOR TYRE 622-28/62 DISC TUBELESS READY Not identified
Spokes

F: STAINLESS STRAIGHT PULL BUTTED F: NDS:264mm DS:266mm / R: NDS:266mm DS:263mm Not identified
Tires
- Schwalbe One

Cockpit and contact points

6 parts

Handlebar

BLKTEC R8 INTEGRATED, W: 400mm (XXS, XS, S) / 420mm (M, L, XL), BB: INTEGRATED, R/D: 0, B: 0 Not identified
Headset

INTEGRATED SEALED BEARING FOR OS HEAD TUBE, IS 52/28.6 | IS 52/40 Not identified
Pedals

Not Included Not identified
Saddle
- Entity
Seatpost

CARBON, AERO 35 x 306mm (XXS) / 337mm (XS) / 357mm (S, M, L, XL) Not identified
Stem

BLKTR8 Integrated, 100mm Length (XXS-S), 110mm Length (M-L), 120mm Length (XL), 0-Degree Not identified

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM

Table

Reach 380mm

Stack 535mm

Wheelbase 984mm

Head angle 72.0°

Seat angle 74.3°

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	370	375	380	385	390	395
Stackmm	505	520.21	535.2	550.4	564.7	580.8
Top tube lengthmm	505.31	517.31	530.42	543.04	555.14	569.25
Seat tube lengthmm	450	475	500	520	545	570
Head tube lengthmm	100	115	130	145	160	175
Head tube angle	71.5°	71.8°	72°	72.3°	72.3°	72.8°
Seat tube angle	75°	74.7°	74.3°	74°	73.7°	73.3°
Chainstay lengthmm	415	415	415	415	415	415
Wheelbasemm	968.42	975.82	983.9	991.1	1000.62	1005.8
Front centermm	565	572	580	587	597	602
Bottom bracket dropmm	73	73	73	73	73	73
Bottom bracket heightmm	271	271	271	271	271	271
Standover heightmm	715.04	739.4	763.21	780.8	802.52	824.28
Fork rakemm	43	43	43	43	43	43
Trailmm	67	65	64	62	62	59
Stack/reach ratio	1.37	1.39	1.41	1.43	1.45	1.47

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
Smallest chainring: 34
Largest chainring: 50
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 34
Lowest gear: 29.0 in
Highest gear: 131.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Tire width: 28c
Wheel material: Carbon
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

29.0 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Highest gear

131.8 gear inches

This value is within the central range for this class.

Cohort: Road / Race Model year: 2025
Sample: 762 bicycles with this information
Coverage: 78.1% of the class

Shifting

Electronic

643 of 969 bicycles with this information use electronic shifting.

Cohort: Road / Race Model year: 2025
Sample: 969 bicycles with this information
Coverage: 99.3% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 11.1 km/h
Highest gear: 50.5 km/h

Total gear range 455%

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: 29.0–131.8 gear inches
Class reference (p10–p90): 28.2–139.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Race Model year: 2025
Lowest gear: 762 bicycles with this information, 78.1% of the class
Highest gear: 762 bicycles with this information, 78.1% 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 2025 builds
Specification	This bicycle Polygon Helios A7X	Polygon Helios A0	Polygon Helios A0 AXS	Polygon Helios A7	Polygon Helios A7 Di2	Polygon Helios A8
Frame
Bicycle weight	Not informed	Not informed	Not informed	9.1 kg	Not informed	Not informed
Drivetrain
Smallest chainring	34	35	35	36	36	36
Largest chainring	50	48	48	52	52	52
Rear sprockets	12	12	12	11	12	11
Smallest sprocket	11	10	10	11	11	11
Largest sprocket	34	33	33	30	34	34
Lowest gear	29.0 in	30.8 in	30.8 in	34.8 in	30.7 in	30.7 in
Highest gear	131.8 in	139.2 in	139.2 in	137.1 in	137.1 in	137.1 in
Cockpit
Derailleur hanger	Not informed	UDH	Not informed	UDH	Not informed	UDH
Other specifications
Bottom bracket standard	BSA	Not informed	T47	BB86/BB92	T47	BB86/BB92
Tire width	28c	30c	30c	28c	28c	28c
Tire clearance	Not informed	Maximum tire width: 34c; Additional specification: Wheel kind: 700	Not informed	Maximum tire width: 34c; Additional specification: Wheel kind: 700	Not informed	Maximum tire width: 34c; Additional specification: Wheel kind: 700
Power meter	Not informed	Not informed	SRAM RED E1 48/35T POWER METERAdditional specification: Model display: Red AXSAdditional specification: Model id: red-axs	Not informed	Not informed	Not informed