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Geometry

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Reach 524 512 514 561
Stack 636 502 514 717
Top Tube (effective) 538 714 683 766
Seat Tube C-C 467 349 457 542
Head Angle 58 68 56 65
Seat Angle 75 63 72 64
Head Tube 90 109 93 95
Chainstay 508 364 474 381
Wheelbase 1011 1280 1007 1078
Front Centre 754 681 854 836
Standover 796 814 743 914
BB Drop 51 59 58 51
Fork Rake / Offset 35 45 51 36
Trail 132 108 107 106
Fork Length (A2C) 422 604 438 603
Wheel Size 25 28 23 31
Tyre Max Width 754 822 836 623
Seatpost Length 319 371 298 371
Max Post Insertion 92 94 118 130
Seatpost Offset 0 0 0 0
Handlebar Width 817 808 884 843
Stem Length 51 61 50 69
Stem Angle -5 -5 -5 -4
Front Travel 89 93 129 102
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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