Bike-on-Bike
Default Config
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of 2026 Polygon Helios A8 Di2 Polygon
Geometry
Stack | 493mm | — |
Reach | 370mm | — |
Stack to Reach Ratio | 1.33:1 | — |
Seat Tube Length, C-T | 395mm | — |
Top Tube Length, Effective/Horizontal Center | 502mm | — |
Top Tube Slope | 13.3deg | — |
Head Tube Angle | 71deg | — |
Seat Tube Angle | 75deg | — |
Head Tube Length | 90mm | — |
Bottom Bracket Drop | 78mm | — |
Bottom Bracket Height | 261mm | — |
Chainstay Length | 410mm | — |
Chainstay Length Horizontal | 402.5mm | — |
Front-Center | 571.8mm | — |
Front-Center Horizontal | 566.5mm | — |
Wheelbase | 969mm | — |
Fork Offset/Rake | 50.7mm | — |
Trail | 63.1mm mid/neutral | — — |
Mechanical Trail | 59.7mm | — |
Wheel Flop | 19.4mm | — |
Standover Height | 662mm | — |
Tire to Pedal Spindle | 62.8mm 170 mm cranks | — |
Pedal Spindle to Ground Clearance | 91mm 170 mm cranks | — |
Build
Wheel Size | 700C/29 in 622 mm BSD | — — |
Tire Width | 28mm | — |
Tire Outer Diameter | 678mm | — |
Bike Length with Tires | 1647mm | — |
Handlebar Width | 400mm | — |
Stem Length | 90mm | — |
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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