Bird Forge 2021


c

Geometry

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Reach 537 548 521 581
Stack 760 782 540 559
Top Tube (effective) 715 555 595 556
Seat Tube C-T 413 439 465 391
Seat Tube (effective) 77 61 75 90
Head Angle 66 60 69 74
Seat Angle 73 75 62 76
Head Tube 109 115 128 130
Chainstay 406 500 446 475
Wheelbase 1022 1376 1398 1328
BB Drop 86 103 81 86
BB Height 299 263 346 323
BB Type 73mm BSA Threaded 73mm BSA Threaded 73mm BSA Threaded 73mm BSA Threaded
Fork Rake / Offset 46 37 47 35
Fork Length (A2C) 440 589 596 543
Seatpost Diameter 30 35 28 37
Wheel Size 29 28 24 33
Front Travel 127 126 131 156
Headset EC34 / EC44 EC34 / EC44 EC34 / EC44 EC34 / EC44
Seat Clamp 34 35 30 35
Data Source Manufacturer Manufacturer Manufacturer Manufacturer

Note: Sagged 30% with 140mm Fork

Measurements are in millimeters and degrees.

Image showing geometry measurements

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