Polygon Helios A8 Di2

fromC$5,999

In stock at 2 shops in Vancouver and Dublin

Sizes in stock
XSSMLXL
Buy at Dunbar Cycles

Prices and stock checked Oct 22.

Where to buy

2 shops

In Canada

Dunbar Cycles622 E Broadway, Vancouver, BC V5T 1X7 · Vancouver · Directions
2026Sizes XS, S, M, L, XL
C$5,999
View

In Ireland

The Bike RackUnit 9, Hills Hire Centre, Johnstown Road, Glenageary, Co. Dublin A96 RX66 · Dublin · Directions
Sizes XS, S, M
€5,606
View

About this bike

Designed To Cut Through Air Better

Show full description and specs

Introducing the all-new Helios A—the pinnacle of aerodynamic engineering and racing performance. Developed over three years of relentless testing and perfected with the elite UCI Continental Team, TSG, the Helios A is built to dominate any race condition.Refined to be 5.2 seconds faster than its predecessor and lighter than ever, the Helios A is meticulously optimized for speed, agility, and control. Whether battling headwinds or slicing through tight corners, its cutting-edge aerodynamics and balanced stiffness deliver an unmatched ride.This isn’t just a bike—it’s your competitive edge.

Lightweight

Weight is a key factor in proving a high-end road bike’s quality. Our engineers tackled the challenge of trimming grams without sacrificing stiffness—redesigning the ACX carbon frame to shed nearly 150 grams while maintaining top performance.

Superior Power Transfer

We’ve reinforced the bottom bracket for instant power transfer and adopted a T47 threaded system for added stiffness, smooth pedaling, and zero creaks—while up front, a shortened, reinforced head tube sharpens cornering for a decisive edge in every sprint.

Ultimate Aerodynamic Machine

The downtube, as the bike’s aerodynamic core, now features dual bottle cage mounting positions—low for large bottles, high for smaller ones—to reduce drag across setups. Paired with a newly redesigned, sleeker fork, the Helios A now cuts through air more efficiently than ever.

Adaptability

With the new Helios A, Polygon redefines adaptability in road biking. The frame supports both an aero seat post (included) and a 27.2mm round option for added comfort—giving riders full control, whether tackling fast sprints or rough courses. It also fits tires from 28c to 34c, making it ultra-versatile for varying road conditions, and comes equipped with a 45mm carbon rim for balanced performance across the series.

Complete Package

The complete series features a new semi-integrated carbon cockpit—handlebar, stem, and wheels—designed by us and proudly branded under our new component line, LINC. Built to balance performance and comfort, LINC wheels make the bike lighter, faster, and more stable in crosswinds, while maximizing speed on flats. Ideal for modern cyclists who value both performance and elegance.

Specifications

Frame
Acx Performance UCI Approved
Fork
Acx Performance UCI Approved
Headset
Integrated (IS) Sealed Bearing For OS Head Tube, IS 52/28.6 | IS 52/40
Stem
Carbon 31.8mm, -7.5deg
Handlebars
Linc Carbon
Wheelset
LINC BETA Carbon DISC (45mm) W/ Tubeless TAPE Installed
Tyres
Pirelli Pzero ROAD TLR 700x28C
Shifters
Shimano Ultegra Di2 ST-R8170, 2x12-Speed
Rear Derailleur
Shimano Ultegra Di2 RD-R8150 Direct Attach
Front Derailleur
Shimano Ultegra Di2 FD-R8150
Crankset
Shimano Ultegra FC-R8100 52/36T
Cassette
Shimano Ultegra CS-R8101-12 11-34T
Chain
Kmc X12 Ept 12-Speed
Bottom Bracket
Token T47 85.5 FOR 24mm Spindle
Brakes
Shimano…
Description from The Bike Rack.