2025/Sagged Bird Bikes Aether 7 Base
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Aluminum
- Suspension
- 140mm fork travel, 130mm rear travel, 30% sag
- Features
- Disc brake
Geometry
S | M | ML | L | XL | |
Stack | 595mm | 595mm | 604mm | 604mm | 613mm |
Reach | 432mm | 457mm | 479mm | 504mm | 527mm |
Stack to Reach Ratio | 1.38:1 | 1.3:1 | 1.26:1 | 1.2:1 | 1.16:1 |
Seat Tube Length, C-T | 370mm | 395mm | 420mm | 445mm | 470mm |
Top Tube Length, Effective/Horizontal HT Top | 580mm | 605mm | 630mm | 655mm | 680mm |
Head Tube Angle | 64.7deg | 64.7deg | 64.7deg | 64.7deg | 64.7deg |
Effective Seat Tube Angle, ETT HT Top | 76deg | 76deg | 76deg | 76deg | 76deg |
Seat Tube Exit Angle | 72deg | 72deg | 72deg | 72deg | 72deg |
Head Tube Length | 110mm | 110mm | 120mm | 120mm | 130mm |
Bottom Bracket Drop | 66.5mm | 66.5mm | 66.5mm | 66.5mm | 66.5mm |
Bottom Bracket Height | 286.5mm | 286.5mm | 286.5mm | 286.5mm | 286.5mm |
Chainstay Length | 425mm | 425mm | 425mm | 425mm | 425mm |
Chainstay Length Horizontal | 419.8mm | 419.8mm | 419.8mm | 419.8mm | 419.8mm |
Front-Center | 746.2mm | 771.1mm | 798mm | 822.9mm | 848.8mm |
Front-Center Horizontal | 743.2mm | 768.2mm | 795.2mm | 820.2mm | 846.2mm |
Wheelbase | 1163mm | 1188mm | 1215mm | 1240mm | 1266mm |
Fork Offset/Rake | 37mm | 37mm | 37mm | 37mm | 37mm |
Fork Length (On-Axis) | 490mm | 490mm | 490mm | 490mm | 490mm |
Trail | 125.9mm very high | 125.9mm very high | 125.9mm very high | 125.9mm very high | 125.9mm very high |
Mechanical Trail | 113.8mm | 113.8mm | 113.8mm | 113.8mm | 113.8mm |
Wheel Flop | 48.7mm | 48.7mm | 48.7mm | 48.7mm | 48.7mm |
Tire to Pedal Spindle | 223.2mm 170 mm cranks | 248.2mm 170 mm cranks | 275.1mm 170 mm cranks | 300mm 170 mm cranks | 325.9mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 116.5mm 170 mm cranks | 116.5mm 170 mm cranks | 116.5mm 170 mm cranks | 116.5mm 170 mm cranks | 116.5mm 170 mm cranks |
Base Build
S | M | ML | L | XL | |
Wheel Size | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD | 650B/27.5 in 584 mm BSD |
Tire Width | 2.4in | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Width Max | 2.6in | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 705.9mm | 705.9mm | 705.9mm | 705.9mm | 705.9mm |
Bike Length with Tires | 1868.9mm | 1893.9mm | 1920.9mm | 1945.9mm | 1971.9mm |
Published Sizing Recommendations
Height | 5 ft 0 in to 5 ft 7 in | 5 ft 2 in to 5 ft 10 in | 5 ft 6 in to 6 ft 2 in | 5 ft 10 in to 6 ft 4 in | 6 ft 2 in to 6 ft 10 in |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Full-suspension Trail MTBSource:https://www.bird.bike/aether-7/