2020 Bird Bikes Aether 9C Base Extra Large (XL)
Build
700C/29 in × 2.5 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Design deviates from other sizes of Bird Bikes Aether 9C
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 652mm |
| Reach | 541mm |
| Stack to Reach Ratio | 1.21:1 |
| Seat Tube Length, C-T | 480mm |
| Top Tube Length, Effective/Horizontal HT Top | 680mm |
| Head Tube Angle | 65deg |
| Effective Seat Tube Angle, ETT HT Top | 78deg |
| Seat Tube Exit Angle | 74deg |
| Head Tube Length | 140mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 334.5mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 428.1mm |
| Front-Center | 873.8mm |
| Front-Center Horizontal | 872.9mm |
| Wheelbase | 1301mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 551mm |
| Trail | 128.3mm very high |
| Mechanical Trail | 116.3mm |
| Wheel Flop | 49.1mm |
| Standover Height | 707mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 329.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 164.5mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 749mm |
| Bike Length with Tires | 2050mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | Unknown |
| Rear Travel | Unknown |
| Suspension Sag | 0% |
| Frame Material | Carbon/Composite |
| Fork Material | N/A |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 6 ft 4 in to 6 ft 4 in |
Source:https://www.bird.bike/aether-9c/