Jamis Portal 2021


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Geometry

  XS/14.5″ S/15.5″ M/17″HI M/17"LO L/19″ XL/21″
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Reach 363 460 440 420 488 543
Stack 504 721 559 730 637 661
Top Tube (effective) 539 546 500 514 535 602
Head Angle 67.5-68 67.5-68 57 79 67.5-68 67.5-68
Seat Angle 74.5-75 74.5-75 76 83 74.5-75 74.5-75
Head Tube 111 92 115 131 136 142
Chainstay 500 437 422 465 453 495
Wheelbase 1257 1319 1176 1259 1196 1222
Standover 739 607
BB Drop 26-33 26-33 22 31 26-33 26-33
Wheel Size 31 27 24 30 24 33
Data Source Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer

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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