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Description

PERFORMANCE AERO

The Polygon Helios A7 is a UCI-approved carbon aero race bike, 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 A7 delivers the speed and agility you need to beat PR’s and the competition.

LOOKS FAST. FEELS FASTER.

The Helios A7's 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 tires 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.

WORKHORSE COMPONENTS

The Helios A7 delivers exceptional value for its performance, featuring a high-quality full carbon fork, powerful Shimano 105 hydraulic disc brakes, and the smooth-shifting Shimano 105 2x12 mechanical groupset at a competitive price. With internal cable routing for a clean aesthetic, the helios offers a sophisticated look and comfortable yet aggressive geometry that balances stability and responsiveness.

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.

SHIMANO 105 R7100 GROUPSET

Experience smooth and precise mechanical shifting with the Shimano 105 R7100 2x12 drivetrain. The wide-range 11-34T cassette and 52/36T chainrings provide versatile gearing for any terrain, making it perfect for conquering climbs and powering through flats.

SHIMANO 105 DISC BRAKES

Enjoy reliable stopping power and modulation with Shimano 105 R7170 hydraulic disc brakes. The 160mm front rotor and 140mm rear rotor offer balanced braking performance for confident control in all riding conditions.

ENTITY ALLOY WHEELS

Roll with confidence on Entity alloy wheels with a versatile 30mm rim depth. These tubeless-ready wheels come equipped with Schwalbe One Addix TLE tubeless tires for a smooth, grippy, and puncture-resistant ride.

Components

FRAMESET
FRAME
ACX Performance UCI Approved, Internal Cable Routing, Shimano KSMBB9241B Press Fit Bottom Bracket, 12x142mm Thru-Axle, Flat Mount Disc
SUSPENSION
FORK
ACX Performance UCI Approved, 12x100mm Thru-Axle, Flat Mount Disc
DRIVETRAIN
REAR DERAILLEUR
Shimano 105, RD-R7100, 12-Speed
FRONT DERAILLEUR
Shimano 105 FD-R7100
SHIFTER
Shimano 105 ST-R7120 2x12-Speed
CRANK
Shimano FC-R7100, 170mm, Hollowtech 2
CHAINRING
52/36T
CASSETTE
Shimano 105 CS-R7101, 11-34T, 12-Speed
CHAIN
KMC X-12
BRAKES
FRONT BRAKE
Shimano 105, BR-R7170 Hydraulic Disc, 160mm Center Lock
REAR BRAKE
Shimano 105, BR-R7170 Hydraulic Disc, 140mm Center Lock
WHEELS
REAR HUB
Entity Alloy Double Wall, 30mm Depth, 24H, Novatec D7921B-X12 Hub, 12x142mm, Tubeless Tape Installed
TYRE
Schwalbe One Addix TLE, 700x28C, Performance, Raceguard
MAX TYRE SIZE
700x28C
INNER TUBE
Entity Inner Tube, 80mm Presta Valve
CONTACT POINTS
HANDLEBAR
FSA HB-RD-257S, Alloy, 400mm Width (XS-S), 420mm Width (M-L) 440mm (Xl), 120mm Drop, 80mm Reach
SADDLE
Velo VL-1A04
SEATPOST
Polygon
STEM
FSA ST-OS-185,90mm Length (XS-S), 100mm Length (M-L), 110mm Length (XL), 6-Degree
PEDALS
The bike is not supplied with pedals
WEIGHT
BIKE WEIGHT
22lbs (Size L)

Specs are subject to change based on availability.

Geometry

Size XXS XS S M L XL
Height 5'2" - 5'5" 5'4" - 5'6" 5'5" - 5'9" 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 2025 Polygon Helios A7

Step 2

Dial In Your Bike Fit

Step 3

Dial In Your Tyre Pressures

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