Bike-on-Bike
Insights
Somewhat aggressive stack and reach vs trend of performance road bikes
Design deviates from other sizes of 2026 Polygon Helios A8 Di2 Polygon
Geometry
Stack | 551mm | — |
Reach | 405mm | — |
Stack to Reach Ratio | 1.36:1 | — |
Seat Tube Length, C-T | 518mm | — |
Top Tube Length, Effective/Horizontal Center | 570mm | — |
Top Tube Slope | 5.7deg | — |
Head Tube Angle | 72.8deg | — |
Seat Tube Angle | 73.3deg | — |
Head Tube Length | 150mm | — |
Bottom Bracket Drop | 71.5mm | — |
Bottom Bracket Height | 267.5mm | — |
Chainstay Length | 410mm | — |
Chainstay Length Horizontal | 403.7mm | — |
Front-Center | 605.5mm | — |
Front-Center Horizontal | 601.3mm | — |
Wheelbase | 1005mm | — |
Fork Offset/Rake | 45.7mm | — |
Trail | 57.1mm mid/neutral | — — |
Mechanical Trail | 54.5mm | — |
Wheel Flop | 16.1mm | — |
Standover Height | 780mm | — |
Tire to Pedal Spindle | 96.5mm 170 mm cranks | — |
Pedal Spindle to Ground Clearance | 97.5mm 170 mm cranks | — |
Build
Wheel Size | 700C/29 in 622 mm BSD | — — |
Tire Width | 28mm | — |
Tire Outer Diameter | 678mm | — |
Bike Length with Tires | 1683mm | — |
Handlebar Width | 440mm | — |
Stem Length | 120mm | — |
Stem Angle | -7.5deg | — |
| Suspension Type | Rigid, non-suspension corrected | — |
| Bar Type | Drop Bar | — |
| Frame Material | Carbon/Composite | — |
| Fork Material | Carbon/Composite | — |
| Brake Type | Disc | — |
Meta
| Actions | — | |
| Source | https://www.polygonbikes.com/helios-a8-di2/ | — |
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