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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 432 400
Stack 696 596
Top Tube (effective) 588 475
Seat Tube C-T 526 509
Head Angle 61 63
Seat Angle 62 64
Head Tube 224
Chainstay 356 470
Wheelbase 937 890
Front Centre 517
Standover 922
BB Drop 60 -57
BB Height 281
Fork Rake / Offset 50
Trail 58
Fork Length (A2C) 322
Wheel Size 700c
Seatpost Length 406
Handlebar Width 385
Stem Length 112
Crank Length 179
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  Specialized Tarmac Disc
2020: 61 		Octane One Gridd
2019: XL
Image showing geometry measurements

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