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 417 473 475 513
Stack 516 621 709 691
Top Tube (effective) 534 531 723 548
Seat Tube C-T 430 348 499 448
Head Angle 54 60 64 51
Seat Angle 85 75 80 78
Head Tube 90 129 113 111
Chainstay 355 410 375 439
Wheelbase 1339 1372 1094 1454
Standover 628 759 800 772
BB Height 406 369 292 368
BB Type 73 mm BSA Threaded 73 mm BSA Threaded 73 mm BSA Threaded 73 mm BSA Threaded
Fork Rake / Offset 33 38 34 41
Fork Length (A2C) 531 595 611 480
Seatpost Diameter 28 27 26 31
Axle Spacing 135 158 164 177
Wheel Size 29" 29" 29" 29"
Tyre Max Width 2.6" 2.6" 2.6" 2.6"
Front Travel 175 164 138 182
Rear Travel 137 187 165 153
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 30 30 40 40
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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