The Big Block track frameset represents our vision of the ideal track frame for the modern fixed gear rider. This is the bike that we’ve always dreamed of building and we are proud to make that dream available to you. It soaks up bumps, sprints like mad, and loves to be ridden hard. Ride it on the street or take it to the boards, the Big Block will hold up it’s end of the deal wherever you choose to ride it.
While the Big Block was designed first and foremost as a true competition ready track frame, we made some tweaks to the formula to make sure that this beast could handle everything we like to do during the course of our daily lives. Unlike other track bikes, the Big Block doesn't suffer from the pedal strike or toe overlap issues that are so prevalent among track frames. Instead of the usual 25c max tire clearance, you can fit 32c cross tires and it’s got a single set of bottle mounts because we like to ride our bikes far. When we say it was designed for the modern fixed gear rider, this is what we mean. We’ve sacrificed none of the handling and geometry of a pure track bike, but added the ability to do more. If you are the type of person who rides fixed everywhere, the Big Block is the best thing going.
Custom head tube badge, signature dropouts, subtle graphics and timeless style. Each piece of tubing on every frame size has been carefully scrutinized and specifically chosen to create the best feel possible. Each size frame has been evaluated for optimum tubing butt placements, diameter, and wall thickness. Attention to detail is our mantra, and it shows in every aspect of this meticulously designed, beautifully constructed frameset.
Features
Traditional track geometry
Signature Dropouts
Traditional track geometry
This bike was built for the boards. It features the steep angles and quick handling that you'd expect from a traditional track bike. It is 100% UCI track legal and would make an excellent classic velodrome racer.
Tire clearance
Check that fork crown and subtle dimple on the chain stays, you've got all the clearance you need without the ugliness of big open spaces. Space for 32c's if you're so inclined.
Steel tubing
Steel remains the preferred material for those who appreciate ride quality. It is the benchmark that all other frame materials are compared to, and for good reason. Nothing matches it's ride, fatigue life, or affordability.
Signature Dropouts
Investment cast from stainless steel, featuring built in chain tensioners, and the timeless Hennepin Bridge icon. Dropout hardware is M4 x 0.8 x 40mm full thread.
E.D. Finish
The entire bike is E.D. coated inside and out. E.D. coating not only improves the quality and durability of the paint, but is the best rust proofing agent going. With the E.D. coating there is no need to Frame Saver the bike, it’s already done for you.
Photos
Build Specs
Frame | All-City Big Block™
100% full 4130 ChroMoly steel. Double butted down, top, and seat tubes. Externally tapered, ovalized, and dimpled chain stays, tapered seat stays.
120mm rear spacing, 1 1/8th head tube, English bottom bracket, 27.2 seatpost
Fork | All-City Big Block™
100% 4130 ChroMoly tapered fork blades, lugged crown and matching dropout
Headset | Cane Creek S-1
Black
Stem | Kalloy
Black, four bolt, 1 1/8th threadless, 26.0 clamp
Handlebar | Kalloy
Track, 183mm drop
Tape | Velo Cork
Black
Brake Lever | Tektro RL720
Black
Brake | Tektro R538
Black, front installed rear in parts box
Crankset | All-City 612 Track Crank
165mm, 144bcd, 46 tooth ring, black
Bottom Bracket | TH Industries
Steel cups, sealed bearing, 68X110mm
Seatpost | Kalloy
Black, alloy, 27.2mm
Saddle | All-City Gonzo
Black
Cog | All-City Standard
17 tooth, black, CroMoly
Lockring | All-City Standard
Black, CroMoly
Chain | KMC
Silver 1/8th
Hubs | All-City Standard Track
Black, Fixed/Free, 32 hole
Rims | Alex DC19
Silver, 32 hole,
Tires | Vittoria Zaffiros
700X28c, steel bead
Tubes | Cheng Shin
700X25 Presta Valve
Geometry
| Size | 46cm | 49cm | 52cm | 55cm | 58cm | 61cm | |
|---|---|---|---|---|---|---|---|
 | Head Tube Angle | 73.0° | 73.5° | 74° | 74.5° | 74.5° | 75° |
 | Seat Tube Angle | 75.0° | 75° | 74.5° | 74.5° | 74.5° | 74.5° |
 | Top Tube Length | 520 mm | 535 mm | 550 mm | 565 mm | 585 mm | 605 mm |
 | Seat Tube Length | 460 mm | 490 mm | 520 mm | 550 mm | 580 mm | 610 mm |
 | Chainstay Length | 396 mm | 396 mm | 396 mm | 396 mm | 396 mm | 396 mm |
 | Bottom Bracket Drop | 58 mm | 58 mm | 58 mm | 58 mm | 58 mm | 58 mm |
 | Fork Offset | 32 mm | 32 mm | 32 mm | 32 mm | 32 mm | 32 mm |
 | Total Fork Length | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm | 375 mm |
 | Head Tube Length | 95 mm | 110 mm | 130 mm | 150 mm | 175 mm | 200 mm |
 | Wheelbase | 945.5 mm | 956.8 mm | 963.2 mm | 973.9 mm | 993.9 mm | 1008.8 mm |
Part Numbers
| Part Number | Size | Color | Description |
|---|---|---|---|
| FM4740 | 46cm | Jeweled White | Big Block Frameset 46cm |
| FM4741 | 49cm | Jeweled White | Big Block Frameset 49cm |
| FM4742 | 52cm | Jeweled White | Big Block Frameset 52cm |
| FM4743 | 55cm | Jeweled White | Big Block Frameset 55cm |
| FM4744 | 58cm | Jeweled White | Big Block Frameset 58cm |
| FM4745 | 61cm | Jeweled White | Big Block Frameset 61cm |
| BK4740 | 46cm | Shelby Silver | Big Block Complete 46cm |
| BK4741 | 49cm | Shelby Silver | Big Block Complete 49cm |
| BK4742 | 52cm | Shelby Silver | Big Block Complete 52cm |
| BK4743 | 55cm | Shelby Silver | Big Block Complete 55cm |
| BK4744 | 58cm | Shelby Silver | Big Block Complete 58cm |
| BK4745 | 61cm | Shelby Silver | Big Block Complete 61cm |
![big%20block[1]](http://farm6.staticflickr.com/5041/5226438669_e4d6778fa7_z.jpg)
![dropout%20bridge%20bridge[1]](http://farm5.staticflickr.com/4112/4835870832_6650c9d02e_z.jpg)
![all_city_rj[1]](http://farm3.staticflickr.com/2289/5808978065_151350b98e_z.jpg)
