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  Specialized Tarmac Disc 2020
 		Octane One Gridd 2019
  Specialized Tarmac Disc
2020: 61
Octane One Gridd
2019: XL
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Choose Baseline
Reach 408 324
Stack 619 550
Top Tube (effective) 561 601
Seat Tube C-T 458 567
Head Angle 70 79
Seat Angle 85 87
Head Tube 235
Chainstay 434 454
Wheelbase 1058 1103
Front Centre 499
Standover 979
BB Drop 62 -68
BB Height 262
Fork Rake / Offset 43
Trail 44
Fork Length (A2C) 333
Wheel Size 700c
Seatpost Length 444
Handlebar Width 392
Stem Length 113
Crank Length 140
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  Specialized Tarmac Disc
2020: 61 		Octane One Gridd
2019: XL
Image showing geometry measurements

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