2022 Bird Bikes Aether 9A Base Medium Long
Build
700C/29 in × 2.4 in
Insights
Average stack and reach vs trend of full-suspension trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 634mm |
| Reach | 484mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, C-T | 420mm |
| Top Tube Length, Effective/Horizontal HT Top | 630mm |
| Top Tube Slope | 21.2deg |
| Head Tube Angle | 65deg |
| Seat Tube Angle | 77deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 40mm |
| Bottom Bracket Height | 332mm |
| Chainstay Length | 430mm |
| Chainstay Length Horizontal | 428.1mm |
| Front-Center | 807.9mm |
| Front-Center Horizontal | 806.9mm |
| Wheelbase | 1235mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 551mm |
| Trail | 127.1mm very high |
| Mechanical Trail | 115.2mm |
| Wheel Flop | 48.7mm |
| Standover Height | 354mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 265.9mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 162mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1978.9mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Published Sizing Recommendations
| Height | 5 ft 8 in to 5 ft 11 in |
Source:https://www.bird.bike/frame-data-geometry/