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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 376 398
Stack 659 616
Top Tube (effective) 693 649
Seat Tube C-T 413 447
Head Angle 64 74
Seat Angle 83 82
Head Tube 102 118
Chainstay 441 366
Wheelbase 1274 932
Standover 659 689
BB Drop 19 17
BB Height 376
Fork Rake / Offset 42
Trail 121
Seatpost Diameter 36
Wheel Size 27
Handlebar Width 825
Stem Length 53
Crank Length 197 162
Front Travel 129 139
Rear Travel 131 117
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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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