2020 Bird Bikes Aether 9C Base
- Category
- Full-suspension Trail MTB
- Design
- Flat Bar, Full suspension
- Frame
- Carbon/Composite
- Suspension
- 0% sag
- Features
- Disc brake
Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry | Average stack and reachvs category Suspension sag unknown Geometry may mis-represent actual riding geometry |
Geometry
Medium (M) | Medium Long (ML) | Large (L) | Extra Large (XL) | |
Stack | 625mm | 634mm | 643mm | 652mm |
Reach | 455mm | 484mm | 512mm | 541mm |
Stack to Reach Ratio | 1.37:1 | 1.31:1 | 1.26:1 | 1.21:1 |
Seat Tube Length, C-T | 395mm | 420mm | 455mm | 480mm |
Top Tube Length, Effective/Horizontal HT Top | 605mm | 630mm | 655mm | 680mm |
Head Tube Angle | 65deg | 65deg | 65deg | 65deg |
Effective Seat Tube Angle, ETT HT Top | 76.5deg | 77deg | 77.5deg | 78deg |
Seat Tube Exit Angle | 71deg | 72deg | 73deg | 74deg |
Head Tube Length | 110mm | 120mm | 130mm | 140mm |
Bottom Bracket Drop | 40mm | 40mm | 40mm | 40mm |
Bottom Bracket Height | 334.5mm | 334.5mm | 334.5mm | 334.5mm |
Chainstay Length | 430mm | 430mm | 430mm | 430mm |
Chainstay Length Horizontal | 428.1mm | 428.1mm | 428.1mm | 428.1mm |
Front-Center | 774.9mm | 807.9mm | 840.8mm | 873.8mm |
Front-Center Horizontal | 773.9mm | 806.9mm | 839.9mm | 872.9mm |
Wheelbase | 1202mm | 1235mm | 1268mm | 1301mm |
Fork Offset/Rake | 42mm | 42mm | 42mm | 42mm |
Fork Length (Axle-To-Crown) | 551mm | 551mm | 551mm | 551mm |
Trail | 128.3mm very high | 128.3mm very high | 128.3mm very high | 128.3mm very high |
Mechanical Trail | 116.3mm | 116.3mm | 116.3mm | 116.3mm |
Wheel Flop | 49.1mm | 49.1mm | 49.1mm | 49.1mm |
Standover Height | 707mm | 707mm | 707mm | 707mm |
Tire to Pedal Spindle | 230.4mm 170 mm cranks | 263.4mm 170 mm cranks | 296.3mm 170 mm cranks | 329.3mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 164.5mm 170 mm cranks | 164.5mm 170 mm cranks | 164.5mm 170 mm cranks | 164.5mm 170 mm cranks |
Base Build
Medium (M) | Medium Long (ML) | Large (L) | Extra Large (XL) | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.5in | 2.5in | 2.5in | 2.5in |
Tire Width Max | 2.6in | 2.6in | 2.6in | 2.6in |
Tire Outer Diameter | 749mm | 749mm | 749mm | 749mm |
Bike Length with Tires | 1951mm | 1984mm | 2017mm | 2050mm |
Published Sizing Recommendations
Height | 5 ft 6 in to 5 ft 6 in | 5 ft 10 in to 5 ft 10 in | 6 ft 2 in to 6 ft 2 in | 6 ft 4 in to 6 ft 4 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-9c/