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Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
Polygon Helios A8X - Ultegra Di2 Carbon Road Bike
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Description

PERFORMANCE AERO

The Polygon Helios A8X is a UCI-approved carbon aero race bike weighing just 7.9kg, this machine is engineered for speed and performance. Whether you’re an aspiring racer chasing the podium or seeking an aerodynamic lightweight ride, the Helios A8X delivers the speed and agility you need to beat PRs and the competition.

LOOKS FAST, FEELS FASTER.

The Helios A8X ACX carbon frame, weighing a mere 800g, is meticulously designed for aerodynamic efficiency, boasting a 31% reduction in drag over the previous generation. Wider clearance for 28c tyres enhances comfort without sacrificing speed, while reinforcements in the bottom bracket, chainstay, and thru-axles ensure that every watt of your effort translates into pure speed on the road.

A TRUSTED BRAND

Polygon boasts over 30 years of experience and is known for offering high-performance bikes at competitive prices. Polygon road bikes have led to numerous national titles and even a victory at the 2023 Tour De Taiwan. With a 5-year warranty, you can trust Polygon to deliver from the factory to the track.

INDUSTRY REVIEWS

"Best value for money road bike I’ve seen" - Cam Nicholls

SHIMANO ULTEGRA Di2 GROUPSET

Di2 electronic shifting provides lightning-fast, precise gear changes with a simple touch of the levers. Conquer any terrain, from challenging climbs to swift descents, with the wide-range 11-34T cassette and versatile 52/36T chainrings.

CARBON WHEELS

Suited to undulating terrain, the Entity WR5 50mm carbon wheels offer a fast yet comfortable riding experience and come wrapped in Schwalbe ONE 28mm TLE/race-ready tyres.

INTEGRATED BARS

The fully integrated Vision Metron cockpit strikes the perfect balance between simplicity and aero engineering. It features an inbuilt GPS mount and full carbon construction.

Components

FRAMESET
FRAME
ACX Performance UCI Approved, Internal Cable Routing, BB86 Press Fit BB, 12x142mm Thru-Axle, Flat Mount Disc
SUSPENSION
FORK
ACX Performance UCI Approved, 12x100mm Thru-Axle, Flat Mount Disc
DRIVETRAIN
REAR DERAILLEUR
Shimano Ultegra Di2 RD-R8150, 12-Speed
FRONT DERAILLEUR
Shimano Ultegra Di2 FD-R8150, Braze-On
SHIFTER
Shimano Ultegra Di2 ST-R8170, 12-Speed
CRANK
Shimano Ultegra FC-R8100, HollowTech 2, 12-Speed
CHAINRING
52/36T
CASSETTE
Shimano Ultegra CS-R8100, 12-Speed, 11-34T
CHAIN
Shimano CN-M8100, 12-Speed
BRAKES
FRONT BRAKE
Shimano Ultegra BR-R8170, Hydraulic Disc, 160mm Center Lock
REAR BRAKE
Shimano Ultegra BR-R8170, Hydraulic Disc, 140mm Center Lock
WHEELS
REAR HUB
Novatec D792SB-X12 Hub, 24H, Stainless Straight Pull Butte Spokes
RIM
Entity WR5 Carbon Disc, 769g, 21mm Internal Width, 50mm Depth, Tubeless Tape Installed
TYRE
Schwalbe One Addix TLE, 700x28C
INNER TUBE
80mm Presta Valve
CONTACT POINTS
HANDLEBAR
Vision Metron 5D ACR Integrated, 400mm Width (XS-S), 420mm Width (M-L), 420mm (XL), 80mm Reach, 125mm Drop
SADDLE
Entity Flux2
SEATPOST
Polygon Aero Carbon Seatpost, 35x337mm (XS), 357mm (S-XL), 20mm Adjustable Offset
STEM
Vision Metron 5D ACR Integrated, 100mm Length (XS-S), 110mm Length (M-L), 120mm Length (XL), 6-Degree
WEIGHT
BIKE WEIGHT
17.4lbs (Size L)

Specs are subject to change based on availability.

Geometry

Size XXS XS S M L XL
Height (ft/in) 5'2" - 5'5" 5'4" - 5'6" 5'5" - 5'8" 5'8" - 5'11" 5'10" - 6'1" 6'0" - 6'4"
Seat Tube Length (A) 450 475  500  520 545  570 
Seat Tube Angle (B) 75° 74.7° 74.3° 74° 73.7° 73.3°
Effective Seat Tube Angle (C) 75° 74.7°  74.3° 74° 73.7°  73.3° 
Head Tube Length (D) 100  115  130  145  160  175 
Head Tube Angle (E) 71.5°  71.8°  72°  72.3°  72.3°  72.8° 
Effective Top Tube (F) 505.31 517.31 530.42 543.04 555.14 569.25
BB Height (G) 271  271 271  271 271 271 
BB Offset (H) 73 73  73  73 73 73
Chainstay Length (I) 415 415 415  415 415  415
Wheelbase (J) 968.42  975.82 983.9 991.1  1000.62  1005.8 
Frame Reach (K) 370 375 380  385  390 395
Frame Stack (L) 505 520.21 535.2 550.4 564.7 580.8 
Standover Height (M) 716.04 739.4 763.21 780.8  802.52 824.28 


*All lengths in mm

Assembly

Your bike needs minor assembly before riding; use the tools and videos included.

As a guide, it'll take 10-40min depending on whether you're an experienced bike assembler or have little to no mechanical experience.

Side Note: Your cables will stretch during the initial bed-in period and must be adjusted by an experienced mechanic around 150km of riding.

Step 1

Unboxing Your Bike

Step 2

Bike Fit Setup

Step 3

Tyre Pressure Setup

Step 4

Pre-Ride Check

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