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.
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 preventative that we can apply.
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.
You can fit 38’cs in this bad boy front and rear, no problem. If you’re running fenders it’ll clear 35’s.
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.
Frame | All-City Nature Boy
612 Select 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
612 Select ChroMoly double butted tapered fork blades, lugged crown and matching dropout
Headset | Cane Creek 10 Series
Black, 6061 T6 aluminum
Stem | Salsa Pro Moto 3
Black, four bolt, 1 1/8th threadless, 31.8 clamp
Handlebar | Salsa Cowbell 3
Black, flared shallow round drop
Tape | Velo
Brake Lever | Tektro RL340
Brake | Tektro CR720
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 | All-City Gonzo
Black, comfy, racy
Freewheel | 17 tooth
Chain | KMC Z610HX
Hubs | All-City Standard
Black, 130mm rear, Fixed/Free, 32 hole
Rims | Alex XC23
Black, 32 hole, 23mm wide
Tires | Kenda Small Block Eight
700X35c Steel bead
Tubes | Cheng Shin
700X28 Presta Valve
Geometry pt 2
|Size||46 cm||49 cm||52 cm||55 cm||58 cm||61 cm|
|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 mm||535 mm||550 mm||565 mm||585 mm||605 mm|
|Seat Tube Length||485.6 mm||515.5 mm||545.4 mm||575.4 mm||605.3 mm||635.3 mm|
|Chainstay Length||415 mm||420 mm||420 mm||420 mm||420 mm||420 mm|
|Bottom Bracket Drop||70 mm||70 mm||70 mm||70 mm||70 mm||70 mm|
|Fork Offset||45 mm||45 mm||45 mm||45 mm||45 mm||45 mm|
|Total Fork Length||395 mm||395 mm||395 mm||395 mm||395 mm||395 mm|
|Head Tube Length||95 mm||110 mm||130 mm||150 mm||175 mm||200 mm|
|Wheelbase||985.7 mm||997.4 mm||1003.6 mm||1014.4 mm||1024.2 mm||1044.2 mm|
|Standover||756 mm||778 mm||802 mm||827 mm||853 mm||880 mm|
|Stack||526.2 mm||542.2 mm||563.0 mm||583.9 mm||609.6mm||633.4mm|
|Reach||369.1 mm||374.4 mm||377.9 mm||386.5 mm||392.8 mm||405.3 mm|
|Crankarm Length||170 mm||170 mm||175 mm||175 mm||175 mm||175 mm|
|FM4754||46cm||Purple Rain||Nature Boy Frameset 46cm|
|FM4755||49cm||Purple Rain||Nature Boy Frameset 49cm|
|FM4756||52cm||Purple Rain||Nature Boy Frameset 52cm|
|FM4757||55cm||Purple Rain||Nature Boy Frameset 55cm|
|FM4758||58cm||Purple Rain||Nature Boy Frameset 58cm|
|FM4759||61cm||Purple Rain||Nature Boy Frameset 61cm|
|BK4754||46cm||Purple Rain||Nature Boy Complete 46cm|
|BK4755||49cm||Purple Rain||Nature Boy Complete 49cm|
|BK4756||52cm||Purple Rain||Nature Boy Complete 52cm|
|BK4757||55cm||Purple Rain||Nature Boy Complete 55cm|
|BK4758||58cm||Purple Rain||Nature Boy Complete 58cm|
|BK4759||61cm||Purple Rain||Nature Boy Complete 61cm|