Tubing 100% Surly 4130 CroMoly steel. TIG-welded
Bearing clamps Investment cast CroMoly, M6 x 16mm stainless cap head machine screws
Bearing compatibility 42mm O.D. x 12mm wide, shims for 40mm O.D. and 1-5/8″ O.D. bearings are included
Seatpost compatibility 28.6mm, shims for 27.2mm and 22.2mm are included
Seatpost clamp 31.8mm Surly Constrictor, included
Brake compatibility Magura hydraulic rim brake (for use with 65mm Large Marge rim)
Tire clearance 26 x 3.7″ (26″ frame), 24 x 3.7″ (24″ frame)
Hub bearing spacing 102 – 104.5mm, measured outside to outside
Tire clearance Room for 700 x 32 or 700 x 28 with fenders
Weight 24″ Frame: 1036g / 26″ Frame: 1066g