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Geometry

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Reach 496 424 502 477
Stack 697 620 712 731
Top Tube (effective) 476 603 727 748
Seat Tube C-C 475 365 410 530
Head Angle 76 60 59 78
Seat Angle 68 88 84 82
Head Tube 71 103 120 106
Chainstay 509 352 442 349
Wheelbase 974 1362 1221 980
Front Centre 727 740 840 795
Standover 683 702 695 756
BB Drop 48 54 56 59
Fork Rake / Offset 41 45 38 51
Trail 122 111 116 91
Fork Length (A2C) 470 481 465 428
Wheel Size 29 25 33 24
Tyre Max Width 609 859 782 785
Seatpost Length 258 252 310 326
Max Post Insertion 97 88 135 138
Seatpost Offset 0 0 0 0
Handlebar Width 898 849 853 697
Stem Length 41 52 49 75
Stem Angle -5 -5 -4 -4
Front Travel 93 118 122 124
Rider Height <172 172-182 180-188 >188
Data Source BMC Fourstroke 01 THREE 2026 BMC Fourstroke 01 THREE 2026 BMC Fourstroke 01 THREE 2026 BMC Fourstroke 01 THREE 2026

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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