All-City Big Block Flat Bar Track Bike (Night Sky/Smoke) (52cm)

All-City Big Block Flat Bar Track Bike (Night Sky/Smoke) (52cm)
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Price: $999.00

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All-City Big Block Flat Bar Track Bike Description:

The All-City Big Block Flat Bar Track Bike is a stripped-down singlespeed contender ready to take on the fast-paced world of velodrome/track racing, with enough grit and utility to be a worthwhile companion on the street.


  • Steel frame, flat-bar singlespeed bike, perfect for track use or aggressive urban riding
  • 612 Select chromoly frame features premium double-butted main triangle, tapered stays, brazed seat collar
  • Ride quality and durability elevated by lugged 4130 chromoly fork
  • Signature All-City investment cast dropouts integrate chain tensioners for easy drivetrain tuning
  • Tire clearance for up to 700c x 32mm wide tires
  • Frame geometry is legal for track/velodrome use


  • Frame: 612 Select Chromoly Steel
  • Fork: All-City Big Block Signature Fork
  • Handlebar: JD Components AL6061 (720mm wide) (20mm rise)
  • Grips/Tape: Velo (Single lock-on)
  • Stem: JD Components 3D forged AL6061 4-bolt stem (31.8mm) (±7°)
  • Headset: Cane Creek 40 Series
  • Levers: Tektro FL750 (Mechanical)
  • Shifter: -
  • Brakes: Tektro R539 (Side Pull)
  • Rotors: -
  • Crankset: All-City 612 Track Crank (165mm) (46T)
  • Bottom Bracket: Sealed, Steel Cups (Square Taper) (68x110mm)
  • Pedals:
  • Chain: KMC (1/8")
  • Chainring: All City (46T)
  • Cassette: All-City standard (17t)
  • Front Derailleur: -
  • Rear Derailleur: -
  • Front Hub: JoyTech A565 (Standard Axle) (10 x 100mm) (32H)
  • Rear Hub: JoyTech A565 (Standard Axle) (10 x 120mm) (32H)
  • Rims: Alex DH19 (19mm Internal Width) (32h)
  • Saddle: All-City Gonzo (Cr-Mo Rails)
  • Seatpost: JD Components AL6061 (12mm offset) (27.2mm)
  • Seat Clamp: All-City Signature Brazed-on Seat Collar
  • Front Tire: Vittoria Zaffiros IV (700 x 28mm)
  • Rear Tire: Vittoria Zaffiros IV (700 x 28mm)
  • Weight: -

Assembly Note:

These bikes are fully built by our expert bike builders, then partially disassembled as needed for shipping. Bikes will arrive to you with some basic assembly still required. 

This product was added to our catalog on June 3, 2024


All City Space Horse Geometry Chart

A Head Tube Angle73°73.5°74°74.5°74.5°75°
B Seat Tube Angle75°75°74.5°74.5°74.5°74.5°
C Top Tube Length520mm535mm550mm565mm585mm605mm
D Seat Tube Length460mm490mm520mm550mm580mm610mm
E Chain Stay Length396mm396mm396mm396mm396mm396mm
F Bottom Bracket Drop58mm58mm58mm58mm58mm58mm
G Fork Offset32mm32mm32mm32mm32mm32mm
H Total Fork Length375mm375mm375mm375mm375mm375mm
I Head Tube Length95mm110m130mm150mm175mm200mm
J Standover743mm767mm793mm821mm846mm874mm
K Wheelbase945mm957mm963mm974mm994mm1009mm
L Stack509mm525mm546mm567mm591mm616mm
M Reach382mm393mm398mm408mm421mm434mm
Handlebar Width720mm720mm720mm720mm720mm720mm
Stem Length80mm90mm100mm100mm110mm110mm
Crank Arm Length165mm165mm165mm165mm165mm165mm

Note: All measurements are provided by the manufacturer and may vary depending on how measurements are acquired.