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Nature Boy 853

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If single speeding is your thing, this is the one.

The race version of our Nature Boy disc platform features our new singlespeed disc dropout, Reynolds 853 tubing, a Whisky No. 9 Thru-Axle cross fork and hydraulic disc brakes.

We are particularly proud of our new singlespeed disc dropout as it solves our main frustration with dropouts of this style: where do you position the brake caliper for optimum performance? The answer was to develop a proprietary system where the tension screw is used to pull the caliper mount into the correct position. Just loosen everything up, use the tensioner to achieve desired chain slack and tighten it all back up. No more guesswork, just reliable braking performance.

Reynolds 853 tubing is undisputedly among the worlds best, and nothing holds its value like high-end steel. It's lightweight, will last forever if treated properly, and produces the finest ride quality of any material used in the bike world. Twenty years from now this frameset will still be fawned over by bike geeks due to that little Reynolds sticker.

The NB853 retains all of the All-City custom touches you've come to expect: signature dropouts, signature seat collar, custom English threaded bottom bracket shell, reinforcements on the bottle bosses and fender mounts. It has clearance for 38's, plus room for tons of mud. Our proven cyclocross geometry and the All-City name back it all up.

Nature Boy 853
COMPLETE MSRP $2150  |  FRAMESET MSRP $1150

Reynolds 853 Tubing

853 is in our opinion, the finest steel known to man and sets the industry benchmark for high end tubing. It’s light, stiff, and provides unmatched ride quality.

E.D. Coating

In Electrophoretic Deposition, or E.D., coating the frame or fork is placed in a paint bath where an electric charge is applied. This fuses a thin layer of black satin coating to the tubes inside and out. This coating acts as both a rust preventative inside and a primer out.

Custom Details

We’re way into the handbuilt touches when it comes to our frames. Which is why you’ll find things like internal cable routing, custom dropouts, lugged crown forks, reinforcements on the bottle bosses, hidden fender mounts, etc.

Signature Dropouts

The disc version of our horizontal dropout not only looks stunning, but improves upon the issue of properly locating your caliper in relation to the wheel.

Frame + Reynolds 853 tubing, double bottle cage mounts, 135mm rear spacing, 44mm headtube, English BB
Fork + Whisky No.9 thru-axle, carbon blades, tapered carbon steerer tube, 125mm x 15mm*1.5 RWS
Rear Spacing + 135mm
Brake Compatibility + Disc only, 160mm max rotor F&R
Seatpost Diameter + 27.2mm
Steerer Tube / Headset + Tapered; 44mm headtube; ZS44/28.6 upper, EC44/40 lower, crown race 39.7mm
Bottom Bracket + 68mm English
Tire Clearance + 700x38
Extras + Fender mounts, E.D. coated for durability and rust prevention
Headset + Cane Creek 40 Series
Stem + Salsa Guide, 1-1/8" threadless, 31.8mm clamp
Handlebar + Salsa Cowbell 3, 31.8mm
Tape + Black Cork
Brake Lever + TRP Hydro SS Hylex
Brakeset + TRP Hydro SS Hylex, 160mm rotors
Crankset + Driveline Alpina OS 42t with Cross Wizard guard
Bottom Bracket + Driveline External cups 68mm
Seatpost + 27.2mm, 350mm Length
Saddle + All-City Gonzo
Freewheel + Surly Spacer kit, 18t splined cog
Chain + KMC Z610HX
Wheels + WTB STP i19 32h, tubeless ready, Novatec 6-bolt hubs, 32h
Tires + Clement MXP 700x33 Steel bead
Nature Boy 853 Geometry Line Drawing
Select up to 3 sizes to view:
46cm
49cm
52cm
55cm
58cm
61cm

Size 46cm 49cm 52cm 55cm 58cm 61cm
Head Tube Angle (A) 70.5 71 71.5 72 72.5 72.5
Seat Tube Angle (B) 74 73.5 73 73 72.5 72.5
Top Tube Length (C) 520 535 550 565 585 605
Seat Tube Length (D) 460 490 520 550 580 610
Chainstay Length (E) 415 420 420 420 420 420
Bottom Bracket Drop (F) 70 70 70 70 70 70
Fork Offset (G) 45 45 45 45 45 45
Total Fork Length (H) 395 395 395 395 395 395
Head Tube Length (I) 95 110 130 150 175 200
Standover (J) 756 778 802 827 853 880
Wheelbase (K) 985.7 997.4 1003.6 1014.4 1024.2 1044.2
Stack (L) 526.2 542.2 563 583.9 609.6 633.4
Reach (M) 369.1 374.4 377.9 386.5 392.8 405.3
Handlebar Width 40 40 42 42 44 44
Stem Length 80 90 100 100 110 120
Crank Arm Length 170 170 172.5 172.5 175 175
BK9900 Complete 46cm Teal/White $2150
BK9901 Complete 49cm Teal/White $2150
BK9902 Complete 52cm Teal/White $2150
BK9903 Complete 55cm Teal/White $2150
BK9904 Complete 58cm Teal/White $2150
BK9905 Complete 61cm Teal/White $2150
FM9900 Frameset 46cm Teal/White $1150
FM9901 Frameset 49cm Teal/White $1150
FM9902 Frameset 52cm Teal/White $1150
FM9903 Frameset 55cm Teal/White $1150
FM9904 Frameset 58cm Teal/White $1150
FM9905 Frameset 61cm Teal/White $1150