2025/Sagged Bird Bikes Aether 7 Base L
Build
650B/27.5 in × 2.4 in
Insights
Very aggressive stack and reach vs trend of full-suspension trail mtb bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 604mm |
| Reach | 504mm |
| Stack to Reach Ratio | 1.2:1 |
| Seat Tube Length, C-T | 445mm |
| Top Tube Length, Effective/Horizontal HT Top | 655mm |
| Head Tube Angle | 64.7deg |
| Effective Seat Tube Angle, ETT HT Top | 76deg |
| Seat Tube Exit Angle | 72deg |
| Head Tube Length | 120mm |
| Bottom Bracket Drop | 66.5mm |
| Bottom Bracket Height | 286.5mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.8mm |
| Front-Center | 822.9mm |
| Front-Center Horizontal | 820.2mm |
| Wheelbase | 1240mm |
| Fork Offset/Rake | 37mm |
| Fork Length (On-Axis) | 490mm |
| Trail | 125.9mm very high |
| Mechanical Trail | 113.8mm |
| Wheel Flop | 48.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 300mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 116.5mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 705.9mm |
| Bike Length with Tires | 1945.9mm |
| Suspension Type | Full suspension |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Rear Travel | 130mm |
| Suspension Sag | 30% |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 5 ft 10 in to 6 ft 4 in |
Source:https://www.bird.bike/aether-7/