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Geometry

  S M L XL
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Reach 482 449 549 509
Stack 558 573 604 494
Top Tube (effective) 623 486 633 529
Seat Tube C-C 340 412 376 437
Head Angle 58 77 76 55
Seat Angle 78 76 70 87
Head Tube 68 90 99 115
Chainstay 479 401 429 392
Wheelbase 1130 1215 1387 1024
Front Centre 692 646 620 714
Standover 698 821 683 847
BB Drop 43 58 56 62
Fork Rake / Offset 38 37 41 37
Trail 103 111 122 93
Fork Length (A2C) 462 542 494 578
Wheel Size 30 23 33 28
Tyre Max Width 800 796 866 726
Seatpost Length 257 261 357 364
Max Post Insertion 90 107 141 107
Seatpost Offset 0 0 0 0
Handlebar Width 631 668 860 834
Stem Length 54 50 59 64
Stem Angle -4 -5 -4 -5
Front Travel 98 89 97 130
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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