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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 348 326
Stack 722 605
Top Tube (effective) 570 663
Seat Tube C-T 564 485
Head Angle 66 58
Seat Angle 72 83
Head Tube 193
Chainstay 400 468
Wheelbase 1208 883
Front Centre 635
Standover 967
BB Drop 60 -75
BB Height 272
Fork Rake / Offset 44
Trail 46
Fork Length (A2C) 404
Wheel Size 700c
Seatpost Length 366
Handlebar Width 485
Stem Length 94
Crank Length 168
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  Specialized Tarmac Disc
2020: 61 		Octane One Gridd
2019: XL
Image showing geometry measurements

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