Bird Aeris 9 2023


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Geometry

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To view geometry data you must use a web browser that supports JavaScript. See: browser-update.org
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Reach 420 401 543 453
Stack 616 742 551 704
Top Tube (effective) 696 609 719 765
Seat Tube C-T 362 467 500 459
Head Angle 60 65 59 57
Seat Angle 88 92 84 67
Head Tube 94 95 138 155
Chainstay 490 361 394 475
Wheelbase 1189 1066 1309 1545
Standover 584 593 667 679
BB Height 295 348 352 305
BB Type 73 mm BSA Threaded 73 mm BSA Threaded 73 mm BSA Threaded 73 mm BSA Threaded
Fork Rake / Offset 47 40 39 42
Fork Length (A2C) 523 550 631 464
Seatpost Diameter 28 29 28 27
Axle Spacing 152 169 136 151
Wheel Size 29" 29" 29" 29"
Tyre Max Width 2.6" 2.6" 2.6" 2.6"
Front Travel 148 139 182 146
Rear Travel 165 139 149 162
Shock Size 230 x 65 230 x 65 230 x 65 230 x 65
Headset Tapered ZS44 / ZS56 Tapered ZS44 / ZS56 Tapered ZS44 / ZS56 Tapered ZS44 / ZS56
Seat Clamp 35 28 29 28
Data Source Manufacturer Manufacturer Manufacturer Manufacturer

Note: Static Geometry with 170mm Fork. Chainstay flip chip can add 6mm to chainstay, -0.5 degrees Head Angle and lower BB height by 7mm in slack position

Standard measurements are in millimeters and degrees. The site attempts to recognize and convert other units back to standard - results may vary.

Image showing geometry measurements

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