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Geometry

  S M L XL
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Reach 511 440 557 439
Stack 519 542 582 663
Top Tube (effective) 550 649 507 756
Seat Tube C-C 356 380 400 490
Head Angle 65 56 78 57
Seat Angle 83 68 86 82
Head Tube 82 92 119 122
Chainstay 370 483 444 510
Wheelbase 1354 1236 1301 1339
Front Centre 738 738 636 853
Standover 720 799 837 795
BB Drop 44 58 44 62
Fork Rake / Offset 38 46 50 39
Trail 100 106 122 96
Fork Length (A2C) 504 546 443 499
Wheel Size 34 30 32 29
Tyre Max Width 851 640 636 879
Seatpost Length 290 371 303 346
Max Post Insertion 108 115 100 141
Seatpost Offset 0 0 0 0
Handlebar Width 725 846 753 872
Stem Length 40 50 50 57
Stem Angle -5 -5 -5 -5
Front Travel 114 90 118 129
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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