Jamis Portal 2018


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Geometry

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Reach
Stack
Top Tube (effective)
Head Angle
Seat Angle
Head Tube
Chainstay
Wheelbase
Standover
BB Drop
Data Source
  XS/14.5" Lo XS/14.5" Hi S/15.5" Lo S/15.5" Hi M/17" Lo M/17" Hi L/19" Lo L/19" Hi XL/21" Lo XL/21" Hi
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Reach 456 400 468 346 513 433 387 418 440 420
Stack 487 604 618 505 721 639 563 597 531 580
Top Tube (effective) 603 474 692 604 679 614 718 703 649 785
Head Angle 77 60 58 79 78 75 65 61 61 68
Seat Angle 60 73 84 67 85 83 89 76 68 76
Head Tube 107 80 105 90 108 131 137 112 151 159
Chainstay 450 392 435 398 432 429 505 511 447 445
Wheelbase 1099 1238 1287 959 1318 1225 1386 1049 1269 1091
Standover 817 868 672 619 886 704 761 675 797 909
BB Drop 31 30 37 26 32 24 38 29 27 25
Data Source Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer Manufacturer

Measurements are in millimeters and degrees.

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