Tubing
Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded. ED Coated
Rear Dropouts
Semi-horizontal dropouts give you singlespeed compatibility and wheelbase adjustability. Adjuster screws are included to keep your wheel in the right place for optimal shifting if you go with derailleurs. Our Gnot-rite spacing (132.5mm) allows you to run 130mm road hubs and 135mm MTB hubs
Brake Compatibility
Cantilever brake studs front and rear
Braze-ons/extras
Bosses front and rear to take cantilever or linear-pull brakes, eyelets at the dropouts, rear rack bosses, dual water bottle mounts, downtube shifter bosses, fully threaded through-blade fork eyelets for a front rack
Seatpost diameter
27.2mm
Seatpost clamp diameter
30.0mm Surly stainless, included
Headset/Steerer Tube
1-1/8˝ threadless
Front Derailleur Clamp Diameter
28.6mm
Bottom bracket shell
68mm wide, standard English threaded 1.37˝ x 24t
Chainring Clearance
Manipulated stays so you can fit the size rings you want. Go nuts
Tire Clearance
Fatties Fit Fine (FFF) stays and our beautiful slope-crowned custom fork provide room for tires up to 700c x 42mm, or about 700c x 40mm with fenders. Largest possible tire size depends on tire, rims, axle location in the dropouts, and other factors, but still, you can run pretty damn big tires
Fork
4130 CroMoly, lugged and brazed. Sloping crown with threaded eylets, tapered and butted curved blades with mid-blade rack eyelets, dual dropout eyelets