Bird Forge 2021


c

Geometry

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Reach 369 544 593 574
Stack 572 723 713 729
Top Tube (effective) 584 650 623 814
Seat Tube C-T 361 355 463 440
Seat Tube (effective) 86 66 91 69
Head Angle 59 55 72 55
Seat Angle 74 83 86 63
Head Tube 89 110 99 127
Chainstay 409 443 413 442
Wheelbase 1154 1400 1245 1522
BB Drop 82 102 80 75
BB Height 338 340 303 289
BB Type 73mm BSA Threaded 73mm BSA Threaded 73mm BSA Threaded 73mm BSA Threaded
Fork Rake / Offset 38 42 43 44
Fork Length (A2C) 480 568 424 417
Seatpost Diameter 33 27 33 30
Wheel Size 23 25 23 24
Front Travel 112 155 151 158
Headset EC34 / EC44 EC34 / EC44 EC34 / EC44 EC34 / EC44
Seat Clamp 36 40 41 39
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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