A cyclocross bike by category, the Cross-Check has proven itself over and over in the real world, on the streets, in the dirt, through muck and sleet, blazing sun and dark of night, over exhilarating trails, through hectic traffic and long stretches of uninterrupted back road boredom. Think of the Cross-Check like an army jeep: tough as nails and used for everything. It’s been changed very little over the years because it works great as it is.
-Tubing - Surly Cross-Check, Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded. Rear rack bosses. Fork Surly Cross-Check, 100% CroMoly, lugged + brazed crown. 1-1/8" threadless steerer.
-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. Gnot-rite spacing (132.5mm) allows you to run 130mm road hubs and 135mm MTB hubs
-Braze-ons - 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 - 30.0mm Surly stainless, included
-Headset/Stem - 1-1/8" threadless
-Bottom bracket - 68mm wide, standard English threaded 1.37" x 24t
-Tyre clearance - Fatties Fit Fine (FFF) stays and beautiful slope-crowned custom fork provide room for tyres up to 700c x 45mm, or about 700c x 40mm with mudguards.
Chainring clearance - Manipulated stays so you can fit the size rings you want.