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2025 Polygon

Helios A0

A carbon frame race bike with ultra high-end components and sram red hydraulic disc brakes.
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Manufacturer Price

$7,999$8,999
FrameCarbon
ForkCarbon
Wheels700c Carbon
Drivetrain2 × 12 Electronic
GroupsetRED AXS
BrakesSRAM RED Hydraulic Disc
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Insights
Ride Feel

Based on frame geometry and build specs.

Rider Position
relaxedaggressive
Terrain
smoothrugged
Helios A0
Other Race bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

41 mph

Helios A0

40 mph

Similar Bikes

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Compare the full HELIOS model range

View Comparison
Sizing
XS

5'1" – 5'6"

SM

5'4" – 5'9"

MD

5'7" – 6'0"

LG

5'10" – 6'3"

XL

6'0" – 6'5"

🐐 Estimated

Rider Fit Notes

None yet.

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Price History
Reviews
Velo
First Ride: The Polygon Helios A Refines the Attainably-Priced Aero Road Bike Formula

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.

Read Review

Escape Collective
In for review: Polygon Helios A – Is this a budget-friendly do-it-all race bike?

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?

Highs
  • 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

Lows
  • Brand seemingly unsure how to define the bike (race or endurance)

  • Frame geometry remains fixed, limiting transformation into a true endurance bike

Read Review

Geometry
Specs
Build
Frame

ACX Performance Carbon, UCI Approved, Full Internal Routing, UDH, Frame weight: 880grams (Size M)

Hanger StandardUDH

Tire Clearance34c

Fork

ACX Performance Carbon, UCI Approved, Tapered Steerer, UCI Approved, Fork weight: 420grams

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

Fizik Vento Antares R3, KIUM Alloy Rails ø 7mm

Seatpost

Carbon, Aero Shape, Adjustable Offset, 35 x 351mm

TypeRigid

Grips

Performance Road Bar Tape (Black)

Groupset
Rear Derailleur

SRAM Red AXS E1 Direct Attach, 12-Speed

Front Derailleur

SRAM Red AXS E1 Braze-On Down-Pull

Crank

48/35T, Max Supported: 53/39T

Shifters

SRAM Red AXS E1 2x12-Speed

Cassette

SRAM Red XG-1290 E1 10-33T XDR, 12-Speed

Chain

SRAM Red E1 with PowerLock 12-Speed

Brakes

Front: SRAM Red Hydraulic Disc, Flat Mount, Rear: SRAM Red Hydraulic Disc, Flat Mount

TypeSRAM RED Hydraulic Disc

Wheels
Rims

Zipp 303 SW Carbon Disc, 700c, 40mm Depth, 25mm Internal Width, Hookless Tubeless-Only Design, F: 24H / R: 24H, Sapim CX-Sprint Stainless Steel Bladed Spokes, 2-Cross Lacing, Brass Secure-Loc Nipples, Total Weight: 1530g (711g Front / 819g Rear), Zipp AXS Wireless Tire Pressure Monitoring Sensor, Tubeless Tape & Valves Pre-Installed **

Front Hub

Zipp ZR1 Alloy, 12x100mm thru-axle, Center Lock disc mount, 24H, Sealed Cartridge Bearings, 66-Point Engagement (6 pawls)

Rear Hub

Zipp ZR1 Alloy, 12x142mm thru-axle, Center Lock disc mount, 24H, Sealed Cartridge Bearings, 66-Point Engagement (6 pawls), XDR 12-Speed Compatible

Tires

Goodyear Vector R SW 700x30C

Disc Rotors

SRAM Paceline X F:160mm / R:140mm Center Lock

Rider Notes
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First added August 31

Last updated May 30