Jamis Portal 2018


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Geometry

  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 374 395 454 366 408 398 389 502 460 471
Stack 555 675 624 554 635 506 730 682 718 712
Top Tube (effective) 481 510 605 691 567 725 635 720 740 569
Head Angle 62 72 57 56 58 72 66 73 73 65
Seat Angle 77 85 75 61 67 68 76 84 88 62
Head Tube 94 82 94 112 136 120 111 131 149 127
Chainstay 358 409 366 353 370 455 460 514 378 362
Wheelbase 995 1318 933 1198 970 1100 1376 1148 1259 1323
Standover 684 679 669 900 685 617 795 883 678 625
BB Drop 37 26 34 23 32 28 36 26 33 29
Data Source Manufacturer Manufacturer Manufacturer Manufacturer 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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