Switchback Stanton 650B Features Double butted, seamless, air hardened Reynolds 631 main tubes Reynolds 631 44mm head tube Cold worked Reynolds 525 seat and chain stays 30.9 dropper compatible seat tube (34.9 clamp) Custom CNC’d logo top tube brace Gusseted down tube I.S.C.G 05 mounts Custom CNC’d interchangeable dropouts (12×142, 10×135, horizontal) Full length gear outer cable 73mm BB shell Pewter head badge Under lacquer graphics Stove enamelled paint Geometry All measurements are taken with a 140mm travel fork at 25% sag Head angle 65.75 degrees (64 degrees static) Seat angle 72.5 degrees Head tube 44mm Headtube lengh 110mm on the 16.5″ and 120mm on the 18″ Seat tube length 16.5” and 18″ Seat tube internal diameter 30.9mm and 34.9 seat clamp Actual top tube 22.5” on the 16.5” frame, 23.3 on the 18” frame Virtual top tube 23.62” on the 16.5” frame, 24.42″ on the 19” frame Chain stay length Actual 415mm Bottom bracket height 315mm Frame weight, 16.5″ Switchback is 5lbs 5oz