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All-City Nature Boy Disc

All-City Nature Boy Disc
  • Color: Green/White
  • Color: Green/White
Color: Green/White
Size: Select size
Please select options Unavailable
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Disc brakes, one gear, and tons of fun: the Nature Boy Disc is All-City's singlespeed cross machine. The 612 chromoly steel frame and tapered chromoly fork soak up less-than-perfect tarmac and rough-and-tumble dirt and grass with equal ease. Race-inspired geometry keeps things feeling fast and makes negotiating technical turns or gridlocked traffic a breeze. With the Nature Boy, one speed is all you need, and an FSA crank turns over a pair of sturdy WTB/Joytech wheels wrapped in Clement MXP tires (Surly Knards on 650B versions). When the going gets gnarly, Promax mechanical disc brakes are there to maintain control on nasty courses and during inclement weather. And all your favorite All-City details are present including a beautiful lugged fork crown, Hennepin Bridge dropouts, signature brazed-on seat collar, custom BB shell, and signature head badge. Everything is E.D. coated for longevity and rust prevention and since cross bikes are perfect for everyday living, you’ll find hidden fender mounts and two sets of bottle bosses (reinforced of course). Race the heck out of it, ride singletrack, crush gravel, or commute to your heart’s content.

WARNING: Cycling can be dangerous. Bicycles and bicycle products should be assembled and serviced by a professional mechanic. Never modify your bicycle or accessories. Read and follow all product instructions and warnings including information on the manufacturer’s website. Inspect your bicycle before every use. Always wear a helmet.


Frame 612 Select ChroMoly steel. Double butted down, top, and seat tubes. Externally tapered, ovalized, and dimpled chain stays, tapered seat stays
Fork 4130 ChroMoly tapered fork blades, lugged crown and matching dropout. Straight steerer tube
Headset Cane Creek 5 Series
Axles Rear spacing: 135mm
Rims/Wheels WTB STP i19 TCS, 650b & 700c
Hubs Joytech QR/disc, 6-bolt disc mount, 32h
Tires 43/46/49cm: 650 x 41mm Surly Knard
52/55/58/61cm: 700 x 33mm Clement MXP
Crankset FSA Vero
Chainrings 42t
Bottom Bracket 68x110mm steel cups, sealed bearings
Chain KMC Z610
Cassette/Rear Cogs Freewheel: 17T, 3/32
Handlebars AL6061, 31.8mm, 80mm reach, 125mm drop
Tape/Grips Black
Stem 3D forged, 4-bolt stem, 31.8mm
Brake Levers Tektro RL340
Brakes Promax mechanical disc, 160mm
Saddle All-City Gonzo
Seat Post AL6061w/alloy head, 27.2mm, 350mm length
Accessories & Extras Fender mounts, E.D. coated

* Subject to change without notice.

Part Numbers

Option UPC MPN
Green/White / 43cm 708752172913 BK8400
Green/White / 46cm 708752172906 BK8401
Green/White / 49cm 708752172890 BK8402
Green/White / 52cm 708752172883 BK8403
Green/White / 55cm 708752172876 BK8404
Green/White / 58cm 708752172869 BK8405
Green/White / 61cm 708752172852 BK8406