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Today’s Deals2025 Polygon
Helios A9
A carbon frame race bike with ultra high-end components and shimano dura-ace hydraulic disc brakes.
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Manufacturer Price
$5,499| Frame | Carbon |
|---|---|
| Fork | Carbon |
| Wheels | 700c Carbon |
| Drivetrain | 2 × 12 Electronic |
| Groupset | Dura-Ace Di2 |
| Brakes | Shimano Dura-Ace Hydraulic Disc |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full HELIOS model range
View Comparison5'1" – 5'6"
5'4" – 5'9"
5'7" – 6'0"
5'10" – 6'3"
6'0" – 6'5"
🐐 Estimated
None yet.
Do you have this bike? Help other riders make a decision about which size will work for them by sharing your own size and fit notes.
Jun 2025 · Alvin Holbrook
The upated Polygon Helios A road bike cuts 150 grams, adds SRAM UDH and a threaded bottom, and an aim toward improved livability.
May 2025 · Alex Hunt
Polygon’s Helios A undercuts the big brands and claims to offer all-round race performance. Can it deliver on both price and ride?
Undercuts big brands on price
34 mm tyre clearance for versatility
Ability to swap between proprietary aero seatpost and standard 27.2 mm round post
Potential for greater compliance and comfort with round seatpost
Brand seemingly unsure how to define the bike (race or endurance)
Frame geometry remains fixed, limiting transformation into a true endurance bike
| Frame | ACX Performance Carbon, UCI Approved, Full Internal Routing, UDH (Universal Derailleur Hanger) Hanger Standard: UDH Tire Clearance: 34c Colors: White / Pink; Red / Purple |
|---|---|
| Fork | ACX Performance Carbon, UCI Approved, Tapered Steerer 1-1/8" To 1-1/2" |
| Headset | Integrated (IS), Sealed Bearings, S.H.I.S: IS 52/28.6 |
| Stem | Polygon Carbon Stem: Length – 90mm (XXXS), 100mm (XXS–XS), 110mm (S–M), 120mm (L–XL); Angle – -7.5° |
| Handlebar | Polygon Carbon Road Handlebar: Width – 400mm (XXXS–XS), 420mm (S–M), 440mm (L–XL); Drop – 125mm, Reach – 80mm |
| Saddle | LINC Flux2, Cr-Mo Rails Ø7mm |
| Seatpost | Carbon, Aero Shape, Adjustable Offset, 35 x 351mm Type: Rigid |
| Grips | Performance Road Bar Tape (Black) |
| Rear Derailleur | Shimano Dura-Ace Di2 RD-R9250, Direct Mount, 12-Speed |
|---|---|
| Front Derailleur | Shimano Dura-Ace Di2 FD-R9250, Braze-On, Down-Pull |
| Crank | 52/36T, Hollowtech II, Max Supported: 53/39T |
| Shifters | Shimano Dura-Ace Di2 ST-R9270, Dual Control Levers, 2x12-Speed |
| Cassette | Shimano Dura-Ace CS-R9200-12, 11-34T, 12-Speed |
| Chain | KMC X12 EPT, Anti-Rust Coating, 12-Speed |
| Brakes | Front: Shimano Dura-Ace BR-R9270 Hydraulic Disc, Flat Mount, Rear: Shimano Dura-Ace BR-R9270 Hydraulic Disc, Flat Mount Type: Shimano Dura-Ace Hydraulic Disc |
| Rims | LINC Alpha 45 Carbon Disc, 700C, 45mm Depth, 22mm Internal Width, 30mm External Width, F: 21H / R: 24H, Total Weight: 1345g (600g Front / 745g Rear), Tubeless Ready (Tubeless Tape Installed) ** |
|---|---|
| Front Hub | LINC Alloy, 12x100mm Thru Axle, Oversize Flange, 21H, Sealed Cartridge Bearings, Center Lock Disc Mount, 21H Aero Bladed Carbon Spokes, Straight Pull |
| Rear Hub | LINC Alloy, 12x142mm Thru Axle, Oversize Flange, 24H, Sealed Cartridge Bearings, Center Lock Disc Mount, Shimano HG 11/12-Speed Compatible, 24H Aero Bladed Carbon Spokes, Straight Pull |
| Tires | Pirelli PZero Road TLR, 700x28C, 2-Way Fit (Clincher & Tubeless) |
| Disc Rotors | Shimano Dura-Ace CL900, Center Lock, 160mm (Front) / 140mm (Rear) |
First added August 31
Last updated May 30