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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

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Build Specs

Frame | All-City Big Block™
612 Select 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™
612 Select ChroMoly tapered fork blades, lugged crown and matching dropout

Headset | Cane Creek 10 Series
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
Black, 32 hole,

Tires | Vittoria Zaffiros
700X28c, steel bead

Tubes | Cheng Shin
700X25 Presta Valve 

Geometry pt 2

Geometry
Size46 cm49 cm52 cm55 cm58 cm61 cm
(A) Head Tube Angle 73° 73.5° 74° 74.5° 74.5° 75°
(B) Seat Tube Angle 75° 75° 74.5° 74.5° 74.5° 74.5°
(C) Top Tube Length 520 mm 535 mm 550 mm 565 mm 585 mm 605 mm
(D) Seat Tube Length 460 mm 490 mm 520 mm 550 mm 580 mm 610 mm
(E) Chainstay Length 396 mm 396 mm 396 mm 396 mm 396 mm 396 mm
(F) Bottom Bracket Drop 58 mm 58 mm 58 mm 58 mm 58 mm 58 mm
(G) Fork Offset 32 mm 32 mm 32 mm 32 mm 32 mm 32 mm
(H) Total Fork Length 375 mm 375 mm 375 mm 375 mm 375 mm 375 mm
(I) Head Tube Length 95 mm 110 mm 130 mm 150 mm 175 mm 200 mm
(J) Wheelbase 945.5 mm 956.8 mm 963.2 mm 973.9 mm 993.9 mm 1008.8 mm
Standover 750 mm 772 mm 796 mm 821 mm 847 mm 874 mm
Stack 508.8 mm 524.6 mm 545.3 mm 566.0 mm 590.2 mm 615.9 mm
Reach 383.7 mm 394.4 mm 394.4 mm 398.8 mm 421.3 mm 434.2 mm
Handlebar Width 40 cm 40 cm 42cm 42cm 44cm 44cm
Crankarm Length 165 mm 165 mm 165 mm 165 mm 165 mm 165 mm

Part Numbers

Part Number Size Color Description
FM4794 46cm 5th Anniversary Silver / White 2014 Big Block Frameset
FM4795 49cm 5th Anniversary Silver / White 2014 Big Block Frameset
FM4796 52cm 5th Anniversary Silver / White 2014 Big Block Frameset
FM4797 55cm 5th Anniversary Silver / White 2014 Big Block Frameset
FM4798 58cm 5th Anniversary Silver / White 2014 Big Block Frameset
FM4799 61cm 5th Anniversary Silver / White 2014 Big Block Frameset
BK4770 46cm Solid Gold Big Block Complete 46cm
BK4771 49cm Solid Gold Big Block Complete 49cm
BK4772 52cm Solid Gold Big Block Complete 52cm
BK4773 55cm Solid Gold Big Block Complete 55cm
BK4774 58cm Solid Gold Big Block Complete 58cm
BK4775 61cm Solid Gold Big Block Complete 61cm

Introducing the Utility Knife

July 29, 2014 | Jeff

0 Comments

Everybody needs a good knife in their backpack or tool kit. Here's a favorite of the AC team, made by the fine folks at CRKT.

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