HELIOS A7
Polygon
Race
HELIOS A7 is a carbon race road bike (2024), by Polygon, in the Helios series. This model is best for riders who want a sporty road feel without a full race fit, with a sporty riding position, with a surface profile that is best matched to paved roads. Metric-wise, it stands out for strong value-for-money versus many similar bikes, an aero-leaning setup that still keeps some versatility, and balanced, versatile speed for everyday riding. Compared with more specialized alternatives, the compromise is a firmer ride feel than comfort-first options. Next step: compare this bike with other race models on MatchBikes.com.
6.4
Rating

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Score Summary
Performance
5.9
Value
9.8
Fit
5.7
Performance
Built for speed and efficiency
Speed
6.8
Medium
Climbing Efficiency
5.3
All-Rounder
Aerodynamics
7.8
Aero-Enhanced
Fit
Dialed-in Fit & Comfort
Riding Position
6.4
Sporty
Fit Flexibility
6.9
Moderately Adjustable
Ride Comfort
3.1
Firm
Value
Value for Money
9.8
Exceptional Value
Surface Range
Road OnlySpecifications
General
Brand
Polygon
Model
HELIOS A7
Year
2024
Price
$2,799
Weight
8.5 kg
Category
Road
Sub Category
Race
Groupset
105
Frame
Frame
carbon
Suspension Fork
ACX PERFORMANCE UCI APPROVED, TAPER 1-1/8" TO 1-1/2"
Rear Shock
-
Suspension Type
Rigid
Drivetrain
Shift Levers
SHIMANO 105 ST-R7020, 2x11-SPEED DCL
Rear Derailleur
SHIMANO 105 RD-R7000-SS DIRECT ATTACH
Front Derailleur
Shimano 105 FD-R7000, Braze-On
Cassette
SHIMANO 105 CS-R7000-11 11-30T
Crank
SHIMANO 52/36T, CRANK ARM: 170mm (XXS, XS,S,M) / 172.5mm (L,XL)
Bottom Bracket
SHIMANO BB-RS500-PB
Chain
SHIMANO CN-HG601-11
Wheels
Front Hub
F: ALLOY THRU AXLE 12x100mm 24H SEALED BEARINGS CENTER LOCK / R: ALLOY THRU AXLE 12x142mm 24H SEALED BEARINGS CENTER LOCK
Rear Hub
F: ALLOY THRU AXLE 12x100mm 24H SEALED BEARINGS CENTER LOCK / R: ALLOY THRU AXLE 12x142mm 24H SEALED BEARINGS CENTER LOCK
Rims
CARBON 622-19 24H FOR TYRE 622-28/62 DISC TUBELESS READY
Spokes
R: STAINLESS STRAIGHT PULL BUTTED NDS:279mm DS:277mm
Tires
SCHWALBE ONE ADDIX 700x28C
Brakes
Brake Type
Hydraulic Disc
Brake Description
SHIMANO 105 BR-R7070 FLAT
Brake Levers
SHIMANO 105 ST-R7020
Cockpit
Stem
FSA NS SMR, 90mm Length (XS-S), 100mm Length (M-L), 110mm Length (XL), 6-Degree
Handlebar
FSA ENERGY COMPACT, W: 400mm (XS, S) / 420mm (M, L) / 440mm (XL), BB: 31.8mm, R/D: 123.2mm, B/R
Seat
Saddle
ENTITY FLUX2, CR-MO ø 7mm
Seatpost
CARBON, AERO 35 x 337mm (XS) / 357mm (S, M, L, XL)
Geometry
| Measurement | XXS | XS | SM | MD | LG | XL |
|---|---|---|---|---|---|---|
| Stack Reach Ratio | 1.365 mm | 1.387 mm | 1.408 mm | 1.43 mm | 1.448 mm | 1.47 mm |
| Bottom Bracket Height | 271 mm | 271 mm | 271 mm | 271 mm | 271 mm | 271 mm |
| Front Center | 565 mm | 572 mm | 580 mm | 587 mm | 597 mm | 602 mm |
| Rake | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm | 43 mm |
| Trail | 67 mm | 65 mm | 64 mm | 62 mm | 62 mm | 59 mm |
| Stack | 505 mm | 520.21 mm | 535.2 mm | 550.4 mm | 564.7 mm | 580.8 mm |
| Reach | 370 mm | 375 mm | 380 mm | 385 mm | 390 mm | 395 mm |
| Top Tube Length | 505.31 mm | 517.31 mm | 530.42 mm | 543.04 mm | 555.14 mm | 569.25 mm |
| Seat Tube Angle | 75 ° | 74.7 ° | 74.3 ° | 74 ° | 73.7 ° | 73.3 ° |
| Seat Tube Length | 450 mm | 475 mm | 500 mm | 520 mm | 545 mm | 570 mm |
| Head Tube Angle | 71.5 ° | 71.8 ° | 72 ° | 72.3 ° | 72.3 ° | 72.8 ° |
| Head Tube Length | 100 mm | 115 mm | 130 mm | 145 mm | 160 mm | 175 mm |
| Chainstay Length | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm | 415 mm |
| Wheelbase | 968 mm | 975 mm | 983 mm | 991 mm | 1000 mm | 1005 mm |
| Bottom Bracket Drop | 73 mm | 73 mm | 73 mm | 73 mm | 73 mm | 73 mm |
| Standover Height | 716 mm | 739 mm | 763 mm | 780 mm | 802 mm | 824 mm |
| Wheels | 700 | 700 | 700 | 700 | 700 | 700 |
| Rider Min Height | 151 cm | 154 cm | 162 cm | 168 cm | 174 cm | 179 cm |
| Rider Max Height | 161 cm | 164 cm | 170 cm | 176 cm | 182 cm | 187 cm |




























































