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 346 486 378 516 517 516
Stack 644 591 702 556 737 752
Top Tube (effective) 536 511 570 587 607 643
Head Angle 67.5-68 67.5-68 59 80 67.5-68 67.5-68
Seat Angle 74.5-75 74.5-75 81 74 74.5-75 74.5-75
Head Tube 97 85 102 131 106 155
Chainstay 443 388 441 513 468 400
Wheelbase 1196 1274 1027 1246 1413 1381
Standover 702 735
BB Drop 26-33 26-33 23 26 26-33 26-33
Wheel Size 26 28 29 32 25 26
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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