PolygonHelios A
Polygon's aero race bike, developed with the UCI Continental team TSG. The 2025 redesign keeps truncated-airfoil tubes but trims about 150 g from the ACX carbon frame, switches to a threaded T47 bottom bracket, clears 34 mm tyres and drops the one-piece cockpit for a two-piece LINC carbon bar and stem. The aero seatpost can be swapped for a 27.2 mm round post via an adapter. Every build uses the same frame, from 105 Di2 to SRAM Red AXS.
- From
- €8,999$8,999€8,999
- Builds
- 7
- Sizes
- 7
- Frame weight
- 800 g28.2 oz
Design sketch, generated from the manufacturer's photo
Our verdict
Overall
out of 100, average of 6 categories
A lot of aero race bike for the money: every build gets the same light ACX frame, 45 mm carbon wheels and electronic shifting, plus a threaded BB, 34 mm clearance and a standard two-piece cockpit. Aero claims are thin, the fit is long and low, and the top builds cost nearly as much as the big brands.
Scored Oct 2026
- + Affordable way in
- + Wide fit adjustment
- + Easy to travel with and service
AI-drafted from the specs on this page and reviewed before publishing. Scores are relative to every bike in the catalog when they were given, so they drop as newer bikes and parts raise the bar.
- Aero
- 78/100
- Frame
- 78/100
- Components
- 80/100
- Fit
- 82/100
- Practicality
- 82/100
- Price
- 93/100
Aero claims and front-end integration
Carbon grade, weight and warranty
Groupset, wheels and power meter
Sizes and adjustment range
Travel, standard parts, servicing
From the cheapest complete-bike MSRP
Bike duel
Reviews
1 independent review of the Polygon Helios A.
- WrittenAlvin HolbrookTested: A0 AXS
Frame & platform
Frame & fork
- Frame material
- Carbon (ACX, UCI approved)
- Fork material
- Carbon (ACX)
- Frame weight
- 800 g28.2 oz
- Weight measured on
- Polygon's claim; size and finish not stated
- Frame sizes
- XXXS, XXS, XS, S, M, L, XL
- Colours
- Sunset Rush (A0 AXS), Velvet Ember / Candy (A9 Di2), Midnight Pine / Chrome Rocket (A8 Di2), Cosmic Plum / Black Phantom (A7 Di2); framesets also in Black Phantom, Candy, Chrome Rocket, Cosmic Plum, Midnight Pine, Sunset Rush and Velvet Ember
- UCI frame approval
- Approved 17 Jan 2024 as 'HELIOS A GEN 3.0' (frame and fork), sizes 3XS - XL (7), code POLYGON-1 (UCI list version 2026.10.02)
Compatibility & standards
- Brake type
- Hydraulic disc
- Wheel size
- 700c
- Max tire width
- 34 mm
- Bottom bracket standard
- T47 threaded (85.5 mm)
- Front axle
- 12x100 thru-axle
- Rear axle
- 12x142 thru-axle
- Cable routing
- Internal, routed through the semi-integrated LINC bar and stem
Bottles & storage
- Bottle mount locations
- Down tube with two cage positions: low for large bottles, high for smaller ones
Fit & adjustability
- Cockpit
- Two-piece: LINC carbon handlebar and separate carbon stem (31.8 mm clamp), hoses routed internally
- Seatpost type
- Aero carbon seatpost (35 mm aero, 351 mm) included; a standard 27.2 mm round post fits via an adapter
Aerodynamics
- Manufacturer aero claims
- 5.2 seconds faster than the previous Helios A (Polygon; test distance and speed not stated). Polygon's pages also cite a 31% drag reduction versus previous generations.
- Tube profile
- Truncated airfoil down tube, seatpost and head tube
Travel, maintenance & warranty
- Headset bearings
- Integrated, IS52/28.6 top and IS52/40 bottom
- Proprietary parts
- Aero seatpost (a round 27.2 mm post can be used with an adapter)
- Frame warranty
- 5 years on carbon frames and on rigid forks, for the original registered owner (Polygon warranty terms)
- Sold via
- Polygon dealers and Polygon's official online store
Photos
Design sketches
Builds & components
Highlighted rows differ between builds. Green marks the best value.
Helios A0 AXS | Helios A9 Di2 Powermeter | Helios A9 Di2 | Helios A8 Di2 Powermeter | Helios A8 Di2 | Helios A7 Di2 | Frameset Helios A | |
|---|---|---|---|---|---|---|---|
| Overview | |||||||
| Price (MSRP) | €8,999$8,999€8,999 | €7,299$6,999€7,299 | €6,399$6,249€6,399 | €6,399$5,399€6,399 | €4,799$4,699€4,799 | €3,999$3,999€3,999 | €2,067$2,199€2,067 |
| Type | Complete bike | Complete bike | Complete bike | Complete bike | Complete bike | Complete bike | Frameset |
| Notes | Sunset Rush paint. USD price from Polygon US. Polygon lists crank arms without lengths. Polygon's spec list names no front derailleur. | Velvet Ember / Candy paint. USD price from Polygon US. Polygon's spec list names no front derailleur. | Velvet Ember / Candy paint. USD price from Polygon US. Polygon's spec list names no front derailleur. | Midnight Pine / Chrome Rocket paint. USD price from Polygon US. Polygon's spec list names no front derailleur. | Midnight Pine / Chrome Rocket paint. USD price from Polygon US. Polygon's spec list names no front derailleur. | Cosmic Plum / Black Phantom paint. USD price from Polygon US. Polygon's spec list names no front derailleur. | Frame, fork, aero seatpost, LINC carbon handlebar and stem and headset, in all seven paint options. The EUR figure is shown exactly as Polygon Europe lists it (€2,067.06); USD price from Polygon US. |
| Drivetrain | |||||||
| Groupset | SRAM Red AXS E1 | Shimano Dura-Ace Di2 R9200 | Shimano Dura-Ace Di2 R9200 | Shimano Ultegra Di2 R8100 | Shimano Ultegra Di2 R8100 | Shimano 105 Di2 R7100 | — |
| Launched | 2024 · current generation | 2021 · current generation | 2021 · current generation | 2021 · current generation | 2021 · current generation | 2022 · current generation | — |
| Speeds | 12-speed | 12-speed | 12-speed | 12-speed | 12-speed | 12-speed | — |
| Electronic | Yes | Yes | Yes | Yes | Yes | Yes | — |
| Wireless | Yes | — | — | — | — | — | — |
| Drivetrain | 2x | 2x | 2x | 2x | 2x | 2x | — |
| Shifters | SRAM Red AXS E1 | Shimano Dura-Ace Di2 ST-R9270 | Shimano Dura-Ace Di2 ST-R9270 | Shimano Ultegra Di2 ST-R8170 | Shimano Ultegra Di2 ST-R8170 | Shimano 105 Di2 ST-R7170 | — |
| Crankset | SRAM Red AXS E1 Power Meter | Shimano Dura-Ace R9200-P (power meter) | Shimano Dura-Ace R9200 | Shimano Ultegra R8100-P (power meter) | Shimano Ultegra R8100 | Shimano 105 R7100 | — |
| Chainrings | 48/35 | 52/36 | 52/36 | 52/36 | 52/36 | 52/36 | — |
| Power meter | SRAM Red AXS E1 Power Meter | Shimano Dura-Ace R9200-P | — | Shimano Ultegra R8100-P | — | — | — |
| Launched | 2024 · current generation | 2021 · current generation | — | 2021 · current generation | — | — | — |
| Bottom bracket | SRAM DUB T47 | Token T47 85.5 | Token T47 85.5 | Token T47 85.5 | Token T47 85.5 | Token T47 85.5 | — |
| Standard | T47 (85.5 mm) | T47 (85.5 mm), for 24 mm spindles | T47 (85.5 mm), for 24 mm spindles | T47 (85.5 mm), for 24 mm spindles | T47 (85.5 mm), for 24 mm spindles | T47 (85.5 mm), for 24 mm spindles | — |
| Rear derailleur | SRAM Red AXS E1 | Shimano Dura-Ace Di2 R9250 | Shimano Dura-Ace Di2 R9250 | Shimano Ultegra Di2 R8150 | Shimano Ultegra Di2 R8150 | Shimano 105 Di2 R7150 | — |
| Cassette | SRAM Red XG-1290 E1 | Shimano Dura-Ace R9200 | Shimano Dura-Ace R9200 | Shimano Ultegra R8101 | Shimano Ultegra R8101 | Shimano 105 R7101 | — |
| Range | 10-33 | 11-34 | 11-34 | 11-34 | 11-34 | 11-34 | — |
| Speeds | 12-speed | 12-speed | 12-speed | 12-speed | 12-speed | 12-speed | — |
| Chain | SRAM Red E1 | KMC X12 EPT | KMC X12 EPT | KMC X12 EPT | KMC X12 EPT | KMC X12 EPT | — |
| Brakes | |||||||
| Brake levers | SRAM Red AXS E1 | Shimano Dura-Ace Di2 ST-R9270 | Shimano Dura-Ace Di2 ST-R9270 | Shimano Ultegra Di2 ST-R8170 | Shimano Ultegra Di2 ST-R8170 | Shimano 105 Di2 ST-R7170 | — |
| Brake calipers | SRAM Red AXS E1 | Shimano Dura-Ace | Shimano Dura-Ace | Shimano Ultegra | Shimano Ultegra | Shimano 105 | — |
| Type | Hydraulic disc | Hydraulic disc | Hydraulic disc | Hydraulic disc | Hydraulic disc | Hydraulic disc | — |
| Rotors | SRAM Paceline X | Shimano RT-CL900 | Shimano RT-CL900 | Shimano RT-CL800 | Shimano RT-CL800 | Shimano SM-RT70 | — |
| Front rotor | 160 mm | 160 mm | 160 mm | 160 mm | 160 mm | 160 mm | — |
| Rear rotor | 140 mm | 140 mm | 140 mm | 140 mm | 140 mm | 140 mm | — |
| Mount | Center Lock | Center Lock | Center Lock | Center Lock | Center Lock | Center Lock | — |
| Wheels & tires | |||||||
| Wheelset | Zipp 303 SW | LINC Alpha Carbon Disc | LINC Alpha Carbon Disc | LINC Beta Carbon Disc | LINC Beta Carbon Disc | LINC Beta Carbon Disc | — |
| Front rim depth | — | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm | — |
| Rear rim depth | — | 45 mm | 45 mm | 45 mm | 45 mm | 45 mm | — |
| Internal rim width | 25 mm | 22 mm | 22 mm | 22 mm | 22 mm | 22 mm | — |
| Material | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon | — |
| Tubeless ready | Yes | Yes | Yes | Yes | Yes | Yes | — |
| Hubs | Alloy, sealed bearings, Center Lock; 12x100 mm front, 12x142 mm rear, 20H front and rear | Alloy, sealed bearings, Center Lock; 12x100 mm front (20H), 12x142 mm rear (24H) | Alloy, sealed bearings, Center Lock; 12x100 mm front (20H), 12x142 mm rear (24H) | Alloy, sealed bearings, Center Lock; 12x100 mm front (20H), 12x142 mm rear (24H) | Alloy, sealed bearings, Center Lock; 12x100 mm front (20H), 12x142 mm rear (24H) | Alloy, sealed bearings, Center Lock; 12x100 mm front (20H), 12x142 mm rear (24H) | — |
| Spokes | Sapim CX-Sprint | Carbon, straight-pull | Carbon, straight-pull | Stainless, double-butted | Stainless, double-butted | Stainless, double-butted | — |
| Notes | — | Supplied with tubeless tape installed | Supplied with tubeless tape installed | Supplied with tubeless tape installed | Supplied with tubeless tape installed | Supplied with tubeless tape installed | — |
| Tires | Goodyear Vector R SW | Pirelli P Zero Road TLR | Pirelli P Zero Road TLR | Pirelli P Zero Road TLR | Pirelli P Zero Road TLR | Pirelli P Zero Road TLR | — |
| Tire width | 30 mm | 28 mm | 28 mm | 28 mm | 28 mm | 28 mm | — |
| Cockpit | |||||||
| Handlebar | LINC Carbon handlebar | LINC Carbon handlebar | LINC Carbon handlebar | LINC Carbon handlebar | LINC Carbon handlebar | LINC Carbon handlebar | LINC Carbon handlebar |
| Type | Drop bar | Drop bar | Drop bar | Drop bar | Drop bar | Drop bar | Drop bar |
| Integrated stem | No | No | No | No | No | No | No |
| Widths available | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) | 400 mm (XXXS, XXS, XS), 420 mm (S, M), 440 mm (L, XL) |
| Cable routing | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) | Internal (semi-integrated with the stem) |
| Material | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon |
| Notes | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). | 31.8 mm clamp. Polygon lists 'R/D' -134.2 mm (XXXS-XS) / -138.2 mm (S-XL) and 'B/R' 92.5 mm (XXXS-XS) / 89.7 mm (S-XL). |
| Stem | LINC Carbon stem | LINC Carbon stem | LINC Carbon stem | LINC Carbon stem | LINC Carbon stem | LINC Carbon stem | LINC Carbon stem |
| Stem length | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) | 90 mm (XXXS), 100 mm (XXS, XS), 110 mm (S, M), 120 mm (L, XL) |
| Notes | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp | -7.5 degree, 31.8 mm bar clamp |
| Headset | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom | Integrated sealed bearing, IS52/28.6 top, IS52/40 bottom |
| Saddle & seatpost | |||||||
| Saddle | Fizik Vento Antares R3 | LINC Flux2 | LINC Flux2 | LINC Flux2 | LINC Flux2 | LINC Flux2 | — |
| Rails | Kium, 7 mm | Cr-Mo, 7 mm | Cr-Mo, 7 mm | Cr-Mo, 7 mm | Cr-Mo, 7 mm | Cr-Mo, 7 mm | — |
| Seatpost | Carbon aero seatpost | Carbon aero seatpost | Carbon aero seatpost | Carbon aero seatpost | Carbon aero seatpost | Carbon aero seatpost | Carbon aero seatpost |
| Material | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon | Carbon |
| Notes | Aero 35 x 351 mm | Aero 35 x 351 mm | Aero 35 x 351 mm | Aero 35 x 351 mm | Aero 35 x 351 mm | Aero 35 x 351 mm | Aero 35 x 351 mm |
Helios A price & value
Where it's cheapest
MSRPs converted at ECB reference rates of 2026-10-05 (1 EUR = 1.1204 USD = 0.8472 GBP). US prices exclude sales tax, so add your state's rate before comparing.
| Build | Market | MSRP | In EUR | vs cheapest |
|---|---|---|---|---|
| Helios A0 AXS | USA (USD, excl. sales tax) | $8,999 | €8,032 | cheapest |
| Europe (EUR, incl. VAT) | €8,999 | €8,999 | +12% | |
| Helios A9 Di2 Powermeter | USA (USD, excl. sales tax) | $6,999 | €6,247 | cheapest |
| Europe (EUR, incl. VAT) | €7,299 | €7,299 | +17% | |
| Helios A9 Di2 | USA (USD, excl. sales tax) | $6,249 | €5,577 | cheapest |
| Europe (EUR, incl. VAT) | €6,399 | €6,399 | +15% | |
| Helios A8 Di2 Powermeter | USA (USD, excl. sales tax) | $5,399 | €4,819 | cheapest |
| Europe (EUR, incl. VAT) | €6,399 | €6,399 | +33% | |
| Helios A8 Di2 | USA (USD, excl. sales tax) | $4,699 | €4,194 | cheapest |
| Europe (EUR, incl. VAT) | €4,799 | €4,799 | +14% | |
| Helios A7 Di2 | USA (USD, excl. sales tax) | $3,999 | €3,569 | cheapest |
| Europe (EUR, incl. VAT) | €3,999 | €3,999 | +12% | |
| Frameset Helios A | USA (USD, excl. sales tax) | $2,199 | €1,963 | cheapest |
| Europe (EUR, incl. VAT) | €2,067 | €2,067 | +5% |
Building up the Frameset Helios A
Included: Handlebar, Headset, Seatpost, Stem.
Still to buy: Groupset, Crankset, Cassette, Chain, Brake calipers, Wheelset, Tires, Saddle, Pedals.
Ownership checklist
2 of 2 known checks pass, 2 not published by Polygon. Why these checks
- ✓
Threaded bottom bracket
T47 threaded (85.5 mm)
- ?
UDH derailleur hanger
- ✓
Standard 12×142 mm rear axle
12x142 thru-axle
- ?
Works with mechanical shifting
Helios A geometry
| XXXS | XXS | XS | S | M | L | XL | |
|---|---|---|---|---|---|---|---|
| Rider height min | 143 cm4′8″ | 151 cm4′11″ | 154 cm5′1″ | 162 cm5′4″ | 168 cm5′6″ | 174 cm5′9″ | 180 cm5′11″ |
| Rider height max | 153 cm5′0″ | 161 cm5′3″ | 164 cm5′5″ | 170 cm5′7″ | 176 cm5′9″ | 181 cm5′11″ | 187 cm6′2″ |
| Stack | 493 mm19.4″ | 503 mm19.8″ | 511 mm20.1″ | 523 mm20.6″ | 533 mm21″ | 551 mm21.7″ | 571 mm22.5″ |
| Reach | 370 mm14.6″ | 375 mm14.8″ | 385 mm15.2″ | 390 mm15.4″ | 400 mm15.7″ | 405 mm15.9″ | 420 mm16.5″ |
| Seat tube angle | 75° | 74.7° | 74.3° | 74° | 73.7° | 73.3° | 73° |
| Head tube angle | 71° | 71.3° | 71.5° | 72.3° | 72.5° | 72.8° | 73° |
| Head tube length | 90 mm3.5″ | 100 mm3.9″ | 110 mm4.3″ | 120 mm4.7″ | 130 mm5.1″ | 150 mm5.9″ | 170 mm6.7″ |
| Effective top tube | 502 mm19.8″ | 513 mm20.2″ | 529 mm20.8″ | 540 mm21.3″ | 556 mm21.9″ | 570 mm22.4″ | 598 mm23.5″ |
| Seat tube length | 395 mm15.6″ | 420 mm16.5″ | 457 mm18″ | 489 mm19.3″ | 499 mm19.6″ | 518 mm20.4″ | 536 mm21.1″ |
| Chainstay | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ | 410 mm16.1″ |
| Wheelbase | 969 mm38.1″ | 976 mm38.4″ | 988 mm38.9″ | 985 mm38.8″ | 996 mm39.2″ | 1,005 mm39.6″ | 1,024 mm40.3″ |
| BB drop | 78 mm3.1″ | 78 mm3.1″ | 75.5 mm3″ | 73 mm2.9″ | 73 mm2.9″ | 71.5 mm2.8″ | 71.5 mm2.8″ |
| BB height | 266 mm10.5″ | 266 mm10.5″ | 268.5 mm10.6″ | 271 mm10.7″ | 271 mm10.7″ | 272.5 mm10.7″ | 272.5 mm10.7″ |
| Standover | 662 mm26.1″ | 685 mm27″ | 720 mm28.3″ | 752 mm29.6″ | 761 mm30″ | 780 mm30.7″ | 799 mm31.5″ |
| Wheel size | 700c | 700c | 700c | 700c | 700c | 700c | 700c |
| Stem length | 90 mm3.5″ | 100 mm3.9″ | 100 mm3.9″ | 110 mm4.3″ | 110 mm4.3″ | 120 mm4.7″ | 120 mm4.7″ |
| Handlebar width | 400 mm15.7″ | 400 mm15.7″ | 400 mm15.7″ | 420 mm16.5″ | 420 mm16.5″ | 440 mm17.3″ | 440 mm17.3″ |
Side view
Drawn to scale (how to read it).
How the geometry rides
The Helios A in size S against the middle size of 65 other bikes: tendencies from geometry, not a ride review (how to read this).
- Wheelbase985 mm38.8″
shortestlonger than 50% of 65 bikeslongest
- Chainstay410 mm16.1″
shortestlonger than 63% of 73 bikeslongest
Good to know
Design
Polygon says the new ACX frame is nearly 150 g lighter than before, with a reinforced bottom bracket area and a shorter, stiffer head tube; the fork was also redesigned to be slimmer.
SourceDesign
Weight claims differ: Polygon's product pages give 800 g for the frame, while the French launch report quotes 850 g for a bare size M frame, about 300 g less than the previous generation. Velo reports Polygon's claims of a 300 g uncut fork and 7.2 kg for a size S Helios A0 AXS.
SourceFit
Polygon's geometry is long and low: a size M has 400 mm reach and 533 mm stack. Velo's 168 cm tester rode the smallest size it had (XXS) with about 20 mm of spacers.
SourceFit
Geometry for XXXS comes from Polygon's frameset page and XXS-XL from the A0 AXS page; the frameset page differs slightly in a few cells (M top tube 555 mm, S wheelbase 984 mm, XL standover 801 mm, and an obvious typo in the XS seat angle).
SourceCompatibility
Velo reports that every new Helios A uses a SRAM UDH derailleur hanger and that the Di2 battery moved to near the bottom bracket; the French launch report mentions an access hatch under the bottom bracket for the Di2 battery.
SourceRacing
Polygon developed the bike over three years with the UCI Continental team TSG.
SourceHistory
Polygon announced the new Helios A at the end of May 2025, with dealer availability in France and Belgium from early June.
SourceVersions
Polygon still lists previous-generation Helios A builds (A9X, A8X, A7X, A8 and A7, labelled 2025 in Europe) alongside the new bikes; they use a press-fit BB86 frame with 415 mm chainstays and are not covered here.
Source
Helios A FAQ
Is the Polygon Helios A UCI legal?+
Yes. The Polygon Helios A is UCI legal, so it can be raced in UCI-sanctioned road races.
How much does the Polygon Helios A cost?+
Manufacturer prices (MSRP): €2,067–€8,999 / $2,199–$8,999 across 7 listed builds and framesets: Helios A0 AXS, Helios A9 Di2 Powermeter, Helios A9 Di2, Helios A8 Di2 Powermeter, Helios A8 Di2, Helios A7 Di2 and Frameset Helios A.
How much does the Polygon Helios A weigh?+
The frame weighs 800 g (28.2 oz) (Polygon's claim; size and finish not stated).
What sizes does the Polygon Helios A come in?+
7 sizes: XXXS, XXS, XS, S, M, L and XL. The manufacturer recommends them for riders from 143 cm (4′8″) to 187 cm (6′2″).
What is the tire clearance of the Polygon Helios A?+
Up to 34 mm tires on 700c wheels.
Which groupsets are compatible with the Polygon Helios A?+
Bottom bracket: T47 threaded (85.5 mm).
What builds of the Polygon Helios A are available?+
Helios A0 AXS: SRAM Red AXS E1; Helios A9 Di2 Powermeter: Shimano Dura-Ace Di2 R9200; Helios A9 Di2: Shimano Dura-Ace Di2 R9200; Helios A8 Di2 Powermeter: Shimano Ultegra Di2 R8100; Helios A8 Di2: Shimano Ultegra Di2 R8100; Helios A7 Di2: Shimano 105 Di2 R7100.
What warranty does the Polygon Helios A frame have?+
5 years on carbon frames and on rigid forks, for the original registered owner (Polygon warranty terms)
Is the Polygon Helios A aerodynamic?+
5.2 seconds faster than the previous Helios A (Polygon; test distance and speed not stated). Polygon's pages also cite a 31% drag reduction versus previous generations.
Sources
- https://www.polygonbikes.com/eu/helios-a-eu/
- https://www.polygonbikes.com/eu/helios-a0-axs/
- https://www.polygonbikes.com/eu/helios-a9-di2-powermeter/
- https://www.polygonbikes.com/eu/2026-helios-a9-di2-road-bike-2/
- https://www.polygonbikes.com/eu/helios-a8-di2-powermeter/
- https://www.polygonbikes.com/eu/helios-a8-di2/
- https://www.polygonbikes.com/eu/helios-a7-di2/
- https://www.polygonbikes.com/eu/frameset-helios-a/
- https://www.polygonbikes.com/us/helios-a-us/
- https://www.polygonbikes.com/us/helios-a0-axs/
- https://www.polygonbikes.com/eu/polygon-warranty-terms/
- https://assets.ctfassets.net/761l7gh5x5an/7jA9krKzzy3lRXPzlm4uyn/7982d7114b9d62978cb87876ea476535/58780c70-6247-4448-8384-b145fa30aba9.pdf
- https://bike-cafe.fr/2025/05/polygon-presente-helios-un-nouveau-velo-route-polyvalent/
- https://velo.outsideonline.com/road/road-gear/first-ride-polygon-helios-a/
Polygon Helios A data last updated · How the data is checked ·