All City’s 2018 Nature Boy Disc Singlespeed Cyclocross Bike features a 612 Select CroMoly steel frame and fork as well as a proprietary disc dropout system that solves the conundrum of brake caliper positioning with dropouts of this style. This system features a tension screw that pulls the caliper mount into the correct position. Sizes 43, 46, and 49 are equipped with 650b wheels for improved handling and acceleration for smaller riders.
700c bikes fit a 38c tire with room; 650b bikes fit a 650X42c tire.
- Frame Material: 612 Select CroMoly steel. Double-butted down, top, seat tubes. Externally tapered, ovalized, dimpled chain stays, tapered seatstays.
- Fork: 4130 CroMoly tapered fork blades, lugged crown & matching dropout. Straight steerer tube.
- Headset: Cane Creek 5 Series.
- Shifters: N/A
- Front Derailleur: N/A.
- Rear Derailleur: N/A.
- Crankset: FSA Vero, 42t.
- Bottom Bracket: 68 x 110mm steel cups, sealed bearings.
- Cassette: 17t, 3/32.
- Chain: KMC Z610.
- Brakeset: Promax mechanical disc, 160mm rotors; Tektro RL340 brake levers.
- Handlebar: AL6061, 31.8mm, 80mm reach, 125mm drop.
- Stem: 3D forged, 4-bolt stem, 31.8mm.
- Saddle: All-City Gonzo.
- Seatpost: AL6061 w/alloy head, 27.2mm, 350mm length.
- Wheelset: WTB STP i19 TCS, 650b & 700c.
- Rims: WTB STP i19 TCS, 650b & 700c.
- Hubs: Joytech QR/disc, 32h, 6-bolt disc mount.
- Spokes: N/A.
- Front Axle: Quick release.
- Rear Axle: 135mm.
- Tires: Schwalbe G-ONE; 650b x 40mm for 43/46/49cm, 700c x 35mm for 52–61cm
- Weight: N/A.
- Manufacturer Warranty: Limited 3 year warranty against materials and workmanship defects.