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  Polygon Bikes Siskiu T8 2021
 		Giant Trance 27.5 2020
  Polygon Bikes Siskiu T8
2021: M (27.5″)
Giant Trance 27.5
2020: M
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Reach 426 396
Stack 549 631
Top Tube (effective) 541 690
Seat Tube C-T 422 470
Head Angle 61 70
Seat Angle 63 83
Head Tube 112 94
Chainstay 463 422
Wheelbase 1027 1019
Standover 670 587
BB Drop 18 13
BB Height 300
Fork Rake / Offset 38
Trail 89
Seatpost Diameter 32
Wheel Size 23
Handlebar Width 690
Stem Length 49
Crank Length 197 140
Front Travel 167 127
Rear Travel 128 143
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  Polygon Bikes Siskiu T8
2021: M (27.5″) 		Giant Trance 27.5
2020: M
Image showing geometry measurements

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