The OB1: Geometry

Frame Size XS (48) S (51) M (54) L (57) XL (60)
A Reach 356 363 378 388 403
B Stack 521 551 571 595 614
C Head Tube 110 138 155 180 200
D Effective Top Tube 515 531 547 570 591
E Wheelbase 987 995 1007 1025 1046
F Front-Center 578 586 598 616 637
G Head Tube Angle 70° 71° 72° 72° 72°
H Fork Offset 51
I Fork Axle to Crown 385
J BB Drop 73
K Chain Stay 420
L Seat Tube Angle 73°
M Seat Tube 440 470 500 530 560
Standover Height 720 750 775 805 835
Max Exposed Steerer 90
Default Stem Length* 70 90 100 100 110
Default Crankarm Length* 160 165 170 172.5 175
Default Handlebar Width* (Center to Center at Hoods)
380
400 420 420 440
All figures in millimeters unless otherwise indicated.
*Use Advanced Fit Needs when ordering if you'd like to select a custom size.
 
Dropper Post Sizing Chart XS (48) S (51) M (54) L (57) XL (60)
Dropper Option 1: 360mm
Length/Travel 360/90
Seatpost Min Insertion - 140 140 140 140
Frame Max Insertion - 188 197 197 197
Min Saddle Height** - 692 713 743 773
Max Saddle Height** - 730 760 790 820
Dropper Option 2: 405mm
Length/Travel 405/105
Seatpost Min Insertion - - 160 160 160
Frame Max Insertion - - 208 229 229
Min Saddle Height** - - 752 761 791
Max Saddle Height** - - 790 820 850
**From Center of BB At Full Extension using our stock saddle. Exact figures depend on saddle's positioning and rider's positioning on it. Other saddles may have different stack heights. Please choose the option (if any) that puts you closest to the upper middle of the min-max saddle height range. Because of the number of variables involved, we cannot guarantee that riders at the extremes of these ranges for a given dropper/frame combination will be able to achieve optimal fit. Please contact us with your order # after purchasing if you are uncertain and we'll help confirm or modify your order as needed.