The Nature Boy is our single speed cross racing monster and carries all of the AC hallmarks that you've come to love: beautiful lugged crown fork, classic paint, custom dropouts, and signature headbadge. It was designed primarily as a race rig, but since we knew that many of you out there would be using this thing for every day life, we built in additional features to make it more versatile.
You’ll find hidden fender mounts, two sets of bottle bosses (reinforced of course), removeable canti studs, fat tire clearance, and a steel fork that is easily swapped for a carbon model should you want to lighten up for race season.
Race the crap out of it, ride singletrack, gravel, or commute until your heart’s content.
Features
E.D. Finish
Internal cable routing
Cross race geometry
Signature Dropouts
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 that we have at our disposal. With the E.D. coating there is no need to Frame Saver the bike, it’s already done for you.
Internal cable routing
The internal rear brake routing not only improves the beauty of the frame, but also provides the ultimate in comfort when grabbing the top tube to shoulder the bike. Once you try it, you’ll wish all of your bikes (where appropriate) had this feature, and since the entire bike is E.D. coated there’s no worries about the cable channel rusting.
Cross race geometry
This bike was designed to go real fast off road. It features aggressive yet traditional cyclocross racing geometry and goes like hell.
Tire clearance
You can fit 38’cs in this bad boy front and rear, no problem. If you’re running fenders it’ll clear 35’s.
Signature Dropouts
Investment cast from stainless steel, featuring built in chain tensioners, and the timeless Hennepin Bridge icon.
Removeable brake studs
This is a nod to our fixie riders. If you’re not using them, remove them for weight savings and clean lines.
Subtle fender mounts
We hope you ride this bike in all conditions all year long, so with that in mind we added fender mounts. Since this is a race bike and we think traditional fender eyelets on race bikes are ugly, we hid the rear ones on the inside of the seat stays, and placed the fork fender eyelets on the blade to keep the look clean.
Photos
Build Specs
Frame | All-City Nature Boy
100% full 4130 ChroMoly steel. Double butted down, top, and seat tubes. Externally tapered, ovalized, and dimpled chain stays, tapered seat stays.
1 1/8th headtube, 130mm rear spacing, English bottom bracket, 27.2 seat post
Fork | All-City Nature Boy
4130 ChroMoly double butted tapered fork blades, lugged crown and matching dropout
Headset | Cane Creek S3
Black, 6061 T6 aluminum, Black Oxide ACB bearings, 97.5g
Stem | Kalloy AS-007
Black, four bolt, 1 1/8th threadless, 31.8 clamp
Handlebar | Kalloy HB-CR21
Black, alloy, single groove, shallow round drop
Tape | Velo
Black cork
Brake Lever | Tektro RL340
Black, aero
Brake | Tektro CR520
Black, cantilever, wide Euro style
Crankset | FSA Vero
Black, alloy, forged, 42 tooth ring
Bottom Bracket | TH Industries
Steel cups, sealed bearing, 68X110mm
Seatpost | Kalloy SP-373
Black, alloy, single bolt, 27.2mm
Saddle | AC Standard Saddle
Black, comfy, racy, w/logo
Freewheel | 16 tooth
Black, 3/32"
Chain | KMC Z610HX
Silver, 3/32"
Hubs | All-City Standard
Black, 130mm rear, Fixed/Free, 32 hole
Spokes | DT Swiss Champion
Black with silver brass nipples
Rims | Alex Race 32
Black, 32 hole, 32mm deep, machined brake track
Tires | WTB Pathway Comp
700X32c Steel bead
Tubes | Cheng Shin
700X28 Presta Valve
Geometry
| Size | 46cm | 49cm | 52cm | 55cm | 58cm | 61cm | |
|---|---|---|---|---|---|---|---|
 | Head Tube Angle | 70.5 | 71 | 71.5 | 72 | 72.5 | 72.5 |
 | Seat Tube Angle | 74 | 73.5 | 73 | 73 | 72.5 | 72.5 |
 | Top Tube Length | 520 | 535 | 550 | 565 | 585 | 605 |
 | Seat Tube Length | 485.6 | 515.5 | 545.4 | 575.4 | 605.3 | 635.3 |
 | Chainstay Length | 415 | 420 | 420 | 420 | 420 | 420 |
 | Bottom Bracket Drop | 70 | 70 | 70 | 70 | 70 | 70 |
 | Fork Offset | 45 | 45 | 45 | 45 | 45 | 45 |
 | Total Fork Length | 395 | 395 | 395 | 395 | 395 | 395 |
 | Head Tube Length | 95 | 110 | 130 | 150 | 175 | 200 |
 | Wheelbase | 985.7 | 997.4 | 1003.6 | 1014.4 | 1024.2 | 1044.2 |
Part Numbers
| Part Number | Size | Color | Description |
|---|---|---|---|
| FM4720 | 46cm | Awesome Lime Color | Nature Boy Frameset 46cm |
| FM4721 | 49cm | Awesome Lime Color | Nature Boy Frameset 49cm |
| FM4722 | 52cm | Awesome Lime Color | Nature Boy Frameset 52cm |
| FM4723 | 55cm | Awesome Lime Color | Nature Boy Frameset 55cm |
| FM4724 | 58cm | Awesome Lime Color | Nature Boy Frameset 58cm |
| FM4725 | 61cm | Awesome Lime Color | Nature Boy Frameset 61cm |
| BK4730 | 46cm | Blackened Blue | Nature Boy Complete 46cm |
| BK4731 | 49cm | Blackened Blue | Nature Boy Complete 49cm |
| BK4732 | 52cm | Blackened Blue | Nature Boy Complete 52cm |
| BK4733 | 55cm | Blackened Blue | Nature Boy Complete 55cm |
| BK4734 | 58cm | Blackened Blue | Nature Boy Complete 58cm |
| BK4735 | 61cm | Blackened Blue | Nature Boy Complete 61cm |
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![natureboyinnature[1]](http://farm7.staticflickr.com/6038/6217251921_0fce2f8edb_z.jpg)
![4548063367_4620b5ac57_o[1]](http://farm4.staticflickr.com/3419/4555035711_8206115b1f_z.jpg)
