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All-City Big Block Frameset

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The Big Block represents All-City's vision of the ideal track bike for everyday life. Take it to the streets or the boards. Wherever you ride it, the Big Block will hold up its end of the deal.

  • 612 Select chromoly steel with double-butted main triangle, tapered stays and brazed-on seat collar
  • 4130 Chromoly double butted fork with lugged crown and tapered blades
  • Velodrome legal track geometry
  • All-City Signature investment-cast stainless steel Hennepin Bridge track dropouts with built-in chain tensioner
  • E.D. coated for durability and rust prevention
  • Tire clearance: 700c x 32mm; 28mm with fenders
Frame measurements (mm) 46cm 49cm 52cm 55cm 58cm 61cm
A. BB Drop 58 58 58 58 58 58
B. Chainstay Length 396 396 396 396 396 396
C. Fork Length - Axle to Crown 375 375 375 375 375 375
D. Fork Offset 32 32 32 32 32 32
E. Head Tube Angle (deg) 75.5 74 73.5 73 72.5 75
F. Headtube Length 95 110 130 150 175 200
G. Reach 383.7 394.4 394.4 398.8 421.3 434.2
H. Seat Tube Angle (deg) 75 75 74.5 74.5 74.5 74.5
I. Seat Tube Length - Center to Top 460 490 520 550 580 610
J. Stack 508.8 524.6 545.3 566 590.2 615.9
K. Standover 750 772 796 821 847 874
L. Top Tube Length (Effective) 520 535 550 565 585 605
M. Wheelbase 945.5 956.8 963.2 973.9 993.9 1008.8

* All dimensions are preliminary and subject to change