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Today’s Deals2025 Polygon
HELIOS A7X
A carbon frame race bike with upper mid-range components and shimano 105 hydraulic disc brakes.
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Manufacturer Price
$3,999| Frame | Carbon |
|---|---|
| Fork | Carbon |
| Wheels | 700c Carbon |
| Drivetrain | 2 × 12 Electronic |
| Groupset | 105 Di2 |
| Brakes | Shimano 105 Hydraulic Disc |
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.
Compare the full HELIOS model range
View Comparison4'11" – 5'4"
5'0" – 5'5"
5'3" – 5'7"
5'6" – 5'10"
5'8" – 6'0"
5'10" – 6'2"
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.
Oct 2023 · Dave Rome
An incredibly well-priced performance-orientated aero road bike sold directly to consumers.
Incredible value
Well-mannered ride
Quick yet balanced handling
Shimano 105 Di2 group
Did I mention the incredible value?
Long reach isn’t for all
Adjusting stem height is tricky
Bars are real wide for an aero bike
No affordable option to change the handlebar
Tight tyre fit on rims
Out-of-box build could use a mechanic
Bartape.
| Frame | carbon BB Standard: BSA, 68mm, Threaded Color: Cameleon Purple |
|---|---|
| Fork | ACX PERFORMANCE UCI APPROVED |
| Bottom Bracket | SHIMANO BB-RS500 PRESSFIT 86 |
| Headset | INTEGRATED SEALED BEARING FOR OS HEAD TUBE, IS 52/28.6 | IS 52/40 |
| Stem | BLKTR8 Integrated, 100mm Length (XXS-S), 110mm Length (M-L), 120mm Length (XL), 0-Degree |
| Handlebar | BLKTEC R8 INTEGRATED, W: 400mm (XXS, XS, S) / 420mm (M, L, XL), BB: INTEGRATED, R/D: 0, B: 0 |
| Saddle | ENTITY FLUX2, CR-MO ø 7mm |
| Seatpost | CARBON, AERO 35 x 306mm (XXS) / 337mm (XS) / 357mm (S, M, L, XL) Type: Rigid |
| Pedals | Not Included |
| Rear Derailleur | SHIMANO 105 Di2 RD-R7150 |
|---|---|
| Front Derailleur | Shimano 105 Di2 RD-R7150, Braze-On |
| Crank | SHIMANO FC-R7100, 50/34T CRANK ARM 170MM (XXS, XS, S, M) / 172.5MM (L, XL) |
| Shifters | SHIMANO 105 Di2 ST-R7170, 2x12 SPEED BRIFTER |
| Cassette | SHIMANO 105 CS-R7100-12 11-34T |
| Chain | KMC X12 |
| Brakes | SHIMANO 105 BR-R7170 Type: Shimano 105 Hydraulic Disc |
| Brake Levers | SHIMANO 105 ST-R7170 |
| Rims | CARBON 622-19 24H FOR TYRE 622-28/62 DISC TUBELESS READY |
|---|---|
| Spokes | F: STAINLESS STRAIGHT PULL BUTTED F: NDS:264mm DS:266mm / R: NDS:266mm DS:263mm |
| Front Hub | F: ALLOY 12x100mm 24H SEALED BEARINGS CL / R; ALLOY 12x142mm 24H SEALED BEARINGS CL |
| Rear Hub | F: ALLOY 12x100mm 24H SEALED BEARINGS CL / R; ALLOY 12x142mm 24H SEALED BEARINGS CL |
| Tires | SCHWALBE ONE ADDIX TLE 700x28C |
| Disc Rotors | SHIMANO SM-RT70 F:160mm / R:140mm CL |
First added June 28
Last updated June 1