Brother Big Bro 2021


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Geometry

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Reach 389 430 413 420
Stack 671 505 723 572
Top Tube (effective) 652 670 582 586
Top Tube (actual) 662 591 518 729
Seat Tube C-T 387 430 552 554
Head Angle 77 61 65 56
Seat Angle 69 74 80 69
Head Tube 77 93 116 136
Chainstay 425 378 396 469
Wheelbase 1139 1212 1314 1352
Standover 672 841 683 715
BB Drop 61 56 58 65
Fork Rake / Offset 41 43 54 44
Fork Length (A2C) 423 553 421 509
Seatpost Diameter 29 27 35 28
Data Source Manufacturer Manufacturer Manufacturer Manufacturer

Measurements are in millimeters and degrees.

Image showing geometry measurements

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