2026 Polygon Helios A8X Base XXS
Build
700C/29 in × 28 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Polygon Helios A8X
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 505mm |
| Reach | 370mm |
| Stack to Reach Ratio | 1.36:1 |
| Seat Tube Length, C-T | 450mm |
| Top Tube Length, Effective/Horizontal Center | 505.3mm |
| Top Tube Slope | 8.2deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 75deg |
| Head Tube Length | 100mm |
| Bottom Bracket Drop | 68mm |
| Bottom Bracket Height | 271mm |
| Chainstay Length | 415mm |
| Chainstay Length Horizontal | 409.4mm |
| Front-Center | 563.2mm |
| Front-Center Horizontal | 559mm |
| Wheelbase | 968.4mm |
| Fork Offset/Rake | 40.6mm |
| Trail | 70.6mm high |
| Mechanical Trail | 67mm |
| Wheel Flop | 21.3mm |
| Standover Height | 715mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 54.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 101mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 28mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1646.4mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://bikesonline.com/products/2024-polygon-helios-a8x