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All-City Big Block

All-City Big Block
  • Color: Azure/White
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All-City's Big Block is the face of modern fixed-gear riding, equally at home taking on the city streets as it is pounding the boards at the local velodrome. The classic chromoly steel frame features UCI-legal track geometry that's as sharp as a tack and lets you transition seamlessly from the street to the track. The frame also accommodates up to 32mm-wide tires and includes a single set of water bottle bosses, increasing the Big Block's versatility even further. All-City's own 612 track crank and fixed cog turn over a pair of Alex/All-City wheels wrapped in Vittoria tires, a rock-solid drivetrain for competition and around-town escapades. An All-City saddle provides an excellent perch, and all your favorite All-City details are present, including Hennepin Bridge track dropouts with integrated chain tensioners, a lugged, straight blade fork, and stylish integrated seatpost collar.


Frame 612 Select ChroMoly steel. Double butted down, top, and seat tubes. Externally tapered, ovalized, and dimpled chain stays, tapered seat stay
Fork 4130 ChroMoly tapered fork blades, lugged crown and matching dropout. Straight Steertube
Headset Cane Creek 10 Series
Rims/Wheels Alex DC19
Hubs All-City Standard, flip flop rear
Spokes Stainless steel
Tires Vittoria Zaffiro, 700x28c
Crankset All-City 612 Track Crank
Chainrings 46
Rear Cogs All-City, 17
Handlebars Aluminum track
Tape/Grips Cork
Stem Aluminum
Brake Levers Tektro RL720
Brakes Tektro R538, mid-reach
Saddle All-City Gonzo
Seat Post Aluminum

* Subject to change without notice.

Part Numbers

Option UPC MPN
Azure/White / 46cm 708752100664 BK4706
Azure/White / 49cm 708752100671 BK4707
Azure/White / 52cm 708752100688 BK4708
Azure/White / 55cm 708752100695 BK4709
Azure/White / 58cm 708752100701 BK4710
Azure/White / 61cm 708752100718 BK4711